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January 28, 2026 20:35
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Solution draft log for https://github.com/VisageDvachevsky/veil-windows-client/pull/75
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| # Solve.mjs Log - 2026-01-28T20:02:40.457Z | |
| [2026-01-28T20:02:40.457Z] [INFO] 📁 Log file: /home/hive/solve-2026-01-28T20-02-40-456Z.log | |
| [2026-01-28T20:02:40.459Z] [INFO] (All output will be logged here) | |
| [2026-01-28T20:02:40.946Z] [INFO] | |
| [2026-01-28T20:02:40.947Z] [INFO] 🚀 solve v1.9.0 | |
| [2026-01-28T20:02:40.948Z] [INFO] 🔧 Raw command executed: | |
| [2026-01-28T20:02:40.948Z] [INFO] /home/hive/.nvm/versions/node/v20.20.0/bin/node /home/hive/.bun/bin/solve https://github.com/VisageDvachevsky/veil-windows-client/pull/75 --model opus --attach-logs --verbose --no-tool-check --auto-resume-on-limit-reset --tokens-budget-stats | |
| [2026-01-28T20:02:40.948Z] [INFO] | |
| [2026-01-28T20:02:40.969Z] [INFO] | |
| [2026-01-28T20:02:40.969Z] [WARNING] ⚠️ SECURITY WARNING: --attach-logs is ENABLED | |
| [2026-01-28T20:02:40.970Z] [INFO] | |
| [2026-01-28T20:02:40.970Z] [INFO] This option will upload the complete solution draft log file to the Pull Request. | |
| [2026-01-28T20:02:40.970Z] [INFO] The log may contain sensitive information such as: | |
| [2026-01-28T20:02:40.970Z] [INFO] • API keys, tokens, or secrets | |
| [2026-01-28T20:02:40.971Z] [INFO] • File paths and directory structures | |
| [2026-01-28T20:02:40.971Z] [INFO] • Command outputs and error messages | |
| [2026-01-28T20:02:40.971Z] [INFO] • Internal system information | |
| [2026-01-28T20:02:40.971Z] [INFO] | |
| [2026-01-28T20:02:40.972Z] [INFO] ⚠️ DO NOT use this option with public repositories or if the log | |
| [2026-01-28T20:02:40.973Z] [INFO] might contain sensitive data that should not be shared publicly. | |
| [2026-01-28T20:02:40.974Z] [INFO] | |
| [2026-01-28T20:02:40.974Z] [INFO] Continuing in 5 seconds... (Press Ctrl+C to abort) | |
| [2026-01-28T20:02:40.974Z] [INFO] | |
| [2026-01-28T20:02:46.091Z] [INFO] | |
| [2026-01-28T20:02:46.115Z] [INFO] 💾 Disk space check: 8558MB available (2048MB required) ✅ | |
| [2026-01-28T20:02:46.117Z] [INFO] 🧠 Memory check: 9767MB available, swap: 4095MB (161MB used), total: 13701MB (256MB required) ✅ | |
| [2026-01-28T20:02:46.134Z] [INFO] ⏩ Skipping tool connection validation (dry-run mode or skip-tool-connection-check enabled) | |
| [2026-01-28T20:02:46.134Z] [INFO] ⏩ Skipping GitHub authentication check (dry-run mode or skip-tool-connection-check enabled) | |
| [2026-01-28T20:02:46.135Z] [INFO] 📋 URL validation: | |
| [2026-01-28T20:02:46.135Z] [INFO] Input URL: https://github.com/VisageDvachevsky/veil-windows-client/pull/75 | |
| [2026-01-28T20:02:46.135Z] [INFO] Is Issue URL: false | |
| [2026-01-28T20:02:46.135Z] [INFO] Is PR URL: true | |
| [2026-01-28T20:02:46.135Z] [INFO] 🔍 Checking repository access for auto-fork... | |
| [2026-01-28T20:02:46.863Z] [INFO] Repository visibility: public | |
| [2026-01-28T20:02:46.863Z] [INFO] ✅ Auto-fork: No write access detected, enabling fork mode | |
| [2026-01-28T20:02:46.864Z] [INFO] ✅ Repository access check: Skipped (fork mode enabled) | |
| [2026-01-28T20:02:47.209Z] [INFO] Repository visibility: public | |
| [2026-01-28T20:02:47.210Z] [INFO] Auto-cleanup default: false (repository is public) | |
| [2026-01-28T20:02:47.211Z] [INFO] 🔄 Continue mode: Working with PR #75 | |
| [2026-01-28T20:02:47.211Z] [INFO] Continue mode activated: PR URL provided directly | |
| [2026-01-28T20:02:47.211Z] [INFO] PR Number set to: 75 | |
| [2026-01-28T20:02:47.212Z] [INFO] Will fetch PR details and linked issue | |
| [2026-01-28T20:02:48.010Z] [INFO] 🍴 Detected fork PR from konard/VisageDvachevsky-veil-windows-client | |
| [2026-01-28T20:02:48.010Z] [INFO] Fork owner: konard | |
| [2026-01-28T20:02:48.010Z] [INFO] Will clone fork repository for continue mode | |
| [2026-01-28T20:02:48.011Z] [INFO] 📝 PR branch: issue-74-63e6e08be062 | |
| [2026-01-28T20:02:48.012Z] [INFO] 🔗 Found linked issue #74 | |
| [2026-01-28T20:02:48.013Z] [INFO] | |
| Creating temporary directory: /tmp/gh-issue-solver-1769630568012 | |
| [2026-01-28T20:02:48.015Z] [INFO] | |
| 🍴 Fork mode: ENABLED | |
| [2026-01-28T20:02:48.015Z] [INFO] Checking fork status... | |
| [2026-01-28T20:02:48.318Z] [INFO] 🔍 Detecting fork conflicts... | |
| [2026-01-28T20:02:49.306Z] [INFO] ✅ No fork conflict: Safe to proceed | |
| [2026-01-28T20:02:49.639Z] [INFO] ✅ Fork exists: konard/VisageDvachevsky-veil-windows-client | |
| [2026-01-28T20:02:49.640Z] [INFO] 🔍 Validating fork parent... | |
| [2026-01-28T20:02:50.044Z] [INFO] ✅ Fork parent validated: VisageDvachevsky/veil-windows-client | |
| [2026-01-28T20:02:50.045Z] [INFO] | |
| 📥 Cloning repository: konard/VisageDvachevsky-veil-windows-client | |
| [2026-01-28T20:02:51.301Z] [INFO] ✅ Cloned to: /tmp/gh-issue-solver-1769630568012 | |
| [2026-01-28T20:02:51.341Z] [INFO] 🔗 Setting upstream: VisageDvachevsky/veil-windows-client | |
| [2026-01-28T20:02:51.381Z] [INFO] ℹ️ Upstream exists: Using existing upstream remote | |
| [2026-01-28T20:02:51.382Z] [INFO] 🔄 Fetching upstream... | |
| [2026-01-28T20:02:51.812Z] [INFO] ✅ Upstream fetched: Successfully | |
| [2026-01-28T20:02:51.813Z] [INFO] 🔄 Syncing default branch... | |
| [2026-01-28T20:02:52.204Z] [INFO] ℹ️ Default branch: main | |
| [2026-01-28T20:02:52.289Z] [INFO] ✅ Default branch synced: with upstream/main | |
| [2026-01-28T20:02:52.289Z] [INFO] 🔄 Pushing to fork: main branch | |
| [2026-01-28T20:02:52.751Z] [INFO] ✅ Fork updated: Default branch pushed to fork | |
| [2026-01-28T20:02:52.753Z] [INFO] | |
| 🔍 Checking PR fork: Determining if branch is in another fork... | |
| [2026-01-28T20:02:53.063Z] [INFO] ℹ️ PR fork owner: Same as current user, using origin remote | |
| [2026-01-28T20:02:53.187Z] [INFO] | |
| 📌 Default branch: main | |
| [2026-01-28T20:02:53.233Z] [INFO] | |
| 🔄 Checking out PR branch: issue-74-63e6e08be062 | |
| [2026-01-28T20:02:53.233Z] [INFO] 📥 Fetching branches: From remote... | |
| [2026-01-28T20:02:53.633Z] [INFO] 🔍 Verifying: Branch checkout... | |
| [2026-01-28T20:02:53.680Z] [INFO] ✅ Branch checked out: issue-74-63e6e08be062 | |
| [2026-01-28T20:02:53.680Z] [INFO] ✅ Current branch: issue-74-63e6e08be062 | |
| [2026-01-28T20:02:53.680Z] [INFO] Branch operation: Checkout existing PR branch | |
| [2026-01-28T20:02:53.680Z] [INFO] Branch verification: Matches expected | |
| [2026-01-28T20:02:53.684Z] [INFO] | |
| 🔄 Continue mode: ACTIVE | |
| [2026-01-28T20:02:53.684Z] [INFO] Using existing PR: #75 | |
| [2026-01-28T20:02:53.685Z] [INFO] PR URL: https://github.com/VisageDvachevsky/veil-windows-client/pull/75 | |
| [2026-01-28T20:02:53.685Z] [INFO] | |
| 🚀 Starting work session: 2026-01-28T20:02:53.685Z | |
| [2026-01-28T20:02:54.047Z] [INFO] 📝 Converting PR: Back to draft mode... | |
| [2026-01-28T20:02:54.933Z] [INFO] ✅ PR converted: Now in draft mode | |
| [2026-01-28T20:02:56.140Z] [INFO] 💬 Posted: Work session start comment | |
| [2026-01-28T20:02:56.444Z] [INFO] 👤 Current user: konard | |
| [2026-01-28T20:02:56.445Z] [INFO] | |
| 📊 Comment counting conditions: | |
| [2026-01-28T20:02:56.445Z] [INFO] prNumber: 75 | |
| [2026-01-28T20:02:56.445Z] [INFO] branchName: issue-74-63e6e08be062 | |
| [2026-01-28T20:02:56.445Z] [INFO] isContinueMode: true | |
| [2026-01-28T20:02:56.446Z] [INFO] Will count comments: true | |
| [2026-01-28T20:02:56.446Z] [INFO] 💬 Counting comments: Checking for new comments since last commit... | |
| [2026-01-28T20:02:56.446Z] [INFO] PR #75 on branch: issue-74-63e6e08be062 | |
| [2026-01-28T20:02:56.446Z] [INFO] Owner/Repo: VisageDvachevsky/veil-windows-client | |
| [2026-01-28T20:02:56.946Z] [INFO] 📅 Last commit time (from API): 2026-01-28T19:42:39.000Z | |
| [2026-01-28T20:02:57.935Z] [INFO] 💬 New PR comments: 4 | |
| [2026-01-28T20:02:57.936Z] [INFO] 💬 New PR review comments: 0 | |
| [2026-01-28T20:02:57.936Z] [INFO] 💬 New issue comments: 0 | |
| [2026-01-28T20:02:57.937Z] [INFO] Total new comments: 4 | |
| [2026-01-28T20:02:57.937Z] [INFO] Comment lines to add: Yes | |
| [2026-01-28T20:02:57.938Z] [INFO] PR review comments fetched: 0 | |
| [2026-01-28T20:02:57.938Z] [INFO] PR conversation comments fetched: 13 | |
| [2026-01-28T20:02:57.938Z] [INFO] Total PR comments checked: 13 | |
| [2026-01-28T20:03:00.959Z] [INFO] Feedback info will be added to prompt: | |
| [2026-01-28T20:03:00.960Z] [INFO] - New comments on the pull request: 4 | |
| [2026-01-28T20:03:00.960Z] [INFO] - Pull request description was edited after last commit | |
| [2026-01-28T20:03:00.960Z] [INFO] 📅 Getting timestamps: From GitHub servers... | |
| [2026-01-28T20:03:01.460Z] [INFO] 📝 Issue updated: 2026-01-28T18:02:22.000Z | |
| [2026-01-28T20:03:01.811Z] [INFO] 💬 Comments: None found | |
| [2026-01-28T20:03:02.225Z] [INFO] 🔀 Recent PR: 2026-01-28T18:02:57.000Z | |
| [2026-01-28T20:03:02.225Z] [INFO] | |
| ✅ Reference time: 2026-01-28T18:02:57.000Z | |
| [2026-01-28T20:03:02.226Z] [INFO] | |
| 🔍 Checking for uncommitted changes to include as feedback... | |
| [2026-01-28T20:03:02.281Z] [INFO] ✅ No uncommitted changes found | |
| [2026-01-28T20:03:02.666Z] [INFO] 📦 Fork workflows detected: https://github.com/konard/VisageDvachevsky-veil-windows-client/actions?query=branch%3Aissue-74-63e6e08be062 | |
| [2026-01-28T20:03:04.792Z] [INFO] 🎭 Playwright MCP detected - enabling browser automation hints | |
| [2026-01-28T20:03:04.798Z] [INFO] | |
| 📝 Final prompt structure: | |
| [2026-01-28T20:03:04.798Z] [INFO] Characters: 662 | |
| [2026-01-28T20:03:04.799Z] [INFO] System prompt characters: 11981 | |
| [2026-01-28T20:03:04.799Z] [INFO] Feedback info: Included | |
| [2026-01-28T20:03:04.801Z] [INFO] | |
| 🤖 Executing Claude: OPUS | |
| [2026-01-28T20:03:04.801Z] [INFO] Model: opus | |
| [2026-01-28T20:03:04.801Z] [INFO] Working directory: /tmp/gh-issue-solver-1769630568012 | |
| [2026-01-28T20:03:04.801Z] [INFO] Branch: issue-74-63e6e08be062 | |
| [2026-01-28T20:03:04.802Z] [INFO] Prompt length: 662 chars | |
| [2026-01-28T20:03:04.802Z] [INFO] System prompt length: 11981 chars | |
| [2026-01-28T20:03:04.802Z] [INFO] Feedback info included: Yes (2 lines) | |
| [2026-01-28T20:03:04.853Z] [INFO] 📈 System resources before execution: | |
| [2026-01-28T20:03:04.853Z] [INFO] Memory: MemFree: 4772016 kB | |
| [2026-01-28T20:03:04.854Z] [INFO] Load: 2.26 1.67 1.23 1/412 176554 | |
| [2026-01-28T20:03:04.854Z] [INFO] | |
| 📝 Raw command: | |
| [2026-01-28T20:03:04.854Z] [INFO] (cd "/tmp/gh-issue-solver-1769630568012" && claude --output-format stream-json --verbose --dangerously-skip-permissions --model claude-opus-4-5-20251101 -p "Issue to solve: https://github.com/VisageDvachevsky/veil-windows-client/issues/74 | |
| Your prepared branch: issue-74-63e6e08be062 | |
| Your prepared working directory: /tmp/gh-issue-solver-1769630568012 | |
| Your prepared Pull Request: https://github.com/VisageDvachevsky/veil-windows-client/pull/75 | |
| Your forked repository: konard/VisageDvachevsky-veil-windows-client | |
| Original repository (upstream): VisageDvachevsky/veil-windows-client | |
| GitHub Actions on your fork: https://github.com/konard/VisageDvachevsky-veil-windows-client/actions?query=branch%3Aissue-74-63e6e08be062 | |
| New comments on the pull request: 4 | |
| Pull request description was edited after last commit | |
| Continue. | |
| " --append-system-prompt "You are an AI issue solver. You prefer to find the root cause of each and every issue. When you talk, you prefer to speak with facts which you have double-checked yourself or cite sources that provide evidence, like quote actual code or give references to documents or pages found on the internet. You are polite and patient, and prefer to assume good intent, trying your best to be helpful. If you are unsure or have assumptions, you prefer to test them yourself or ask questions to clarify requirements. | |
| General guidelines. | |
| - When you execute commands, always save their logs to files for easier reading if the output becomes large. | |
| - When running commands, do not set a timeout yourself — let them run as long as needed (default timeout - 2 minutes is more than enough), and once they finish, review the logs in the file. | |
| - When running sudo commands (especially package installations like apt-get, yum, npm install, etc.), always run them in the background to avoid timeout issues and permission errors when the process needs to be killed. Use the run_in_background parameter or append & to the command. | |
| - When CI is failing or user reports failures, consider adding a detailed investigation protocol to your todo list with these steps: | |
| Step 1: List recent runs with timestamps using: gh run list --repo VisageDvachevsky/veil-windows-client --branch issue-74-63e6e08be062 --limit 5 --json databaseId,conclusion,createdAt,headSha | |
| Step 2: Verify runs are after the latest commit by checking timestamps and SHA | |
| Step 3: For each non-passing run, download logs to preserve them: gh run view {run-id} --repo VisageDvachevsky/veil-windows-client --log > ci-logs/{workflow}-{run-id}.log | |
| Step 4: Read each downloaded log file using Read tool to understand the actual failures | |
| Step 5: Report findings with specific errors and line numbers from logs | |
| This detailed investigation is especially helpful when user mentions CI failures, asks to investigate logs, you see non-passing status, or when finalizing a PR. | |
| Note: If user says \"failing\" but tools show \"passing\", this might indicate stale data - consider downloading fresh logs and checking timestamps to resolve the discrepancy. | |
| - When a code or log file has more than 1500 lines, read it in chunks of 1500 lines. | |
| - When facing a complex problem, do as much tracing as possible and turn on all verbose modes. | |
| - When you create debug, test, or example/experiment scripts for fixing, always keep them in an examples and/or experiments folders so you can reuse them later. | |
| - When testing your assumptions, use the experiment scripts, and add it to experiments folder. | |
| - When your experiments can show real world use case of the software, add it to examples folder. | |
| - When you face something extremely hard, use divide and conquer — it always helps. | |
| Initial research. | |
| - When you start, make sure you create detailed plan for yourself and follow your todo list step by step, make sure that as many points from these guidelines are added to your todo list to keep track of everything that can help you solve the issue with highest possible quality. | |
| - When user mentions CI failures or asks to investigate logs, consider adding these todos to track the investigation: (1) List recent CI runs with timestamps, (2) Download logs from failed runs to ci-logs/ directory, (3) Analyze error messages and identify root cause, (4) Implement fix, (5) Verify fix resolves the specific errors found in logs. | |
| - When you read issue, read all details and comments thoroughly. | |
| - When you see screenshots or images in issue descriptions, pull request descriptions, comments, or discussions, use WebFetch tool (or fetch tool) to download the image first, then use Read tool to view and analyze it. IMPORTANT: Before reading downloaded images with the Read tool, verify the file is a valid image (not HTML). Use a CLI tool like 'file' command to check the actual file format. Reading corrupted or non-image files (like GitHub's HTML 404 pages saved as .png) can cause \"Could not process image\" errors and may crash the AI solver process. If the file command shows \"HTML\" or \"text\", the download failed and you should retry or skip the image. | |
| - When you need issue details, use gh issue view https://github.com/VisageDvachevsky/veil-windows-client/issues/74. | |
| - When you need related code, use gh search code --owner VisageDvachevsky [keywords]. | |
| - When you need repo context, read files in your working directory. | |
| - When you study related work, study the most recent related pull requests. | |
| - When issue is not defined enough, write a comment to ask clarifying questions. | |
| - When accessing GitHub Gists (especially private ones), use gh gist view command instead of direct URL fetching to ensure proper authentication. | |
| - When you are fixing a bug, please make sure you first find the actual root cause, do as many experiments as needed. | |
| - When you are fixing a bug and code does not have enough tracing/logs, add them and make sure they stay in the code, but are switched off by default. | |
| - When you need comments on a pull request, note that GitHub has THREE different comment types with different API endpoints: | |
| 1. PR review comments (inline code comments): gh api repos/VisageDvachevsky/veil-windows-client/pulls/75/comments --paginate | |
| 2. PR conversation comments (general discussion): gh api repos/VisageDvachevsky/veil-windows-client/issues/75/comments --paginate | |
| 3. PR reviews (approve/request changes): gh api repos/VisageDvachevsky/veil-windows-client/pulls/75/reviews --paginate | |
| IMPORTANT: The command \"gh pr view --json comments\" ONLY returns conversation comments and misses review comments! | |
| - When you need latest comments on issue, use gh api repos/VisageDvachevsky/veil-windows-client/issues/74/comments --paginate. | |
| Solution development and testing. | |
| - When issue is solvable, implement code with tests. | |
| - When implementing features, search for similar existing implementations in the codebase and use them as examples instead of implementing everything from scratch. | |
| - When coding, each atomic step that can be useful by itself should be commited to the pull request's branch, meaning if work will be interrupted by any reason parts of solution will still be kept intact and safe in pull request. | |
| - When you test: | |
| start from testing of small functions using separate scripts; | |
| write unit tests with mocks for easy and quick start. | |
| - When you test integrations, use existing framework. | |
| - When you test solution draft, include automated checks in pr. | |
| - When issue is unclear, write comment on issue asking questions. | |
| - When you encounter any problems that you unable to solve yourself (any human feedback or help), write a comment to the pull request asking for help. | |
| - When you need human help, use gh pr comment 75 --body \"your message\" to comment on existing PR. | |
| Preparing pull request. | |
| - When you code, follow contributing guidelines. | |
| - When you commit, write clear message. | |
| - When you need examples of style, use gh pr list --repo VisageDvachevsky/veil-windows-client --state merged --search [keywords]. | |
| - When you open pr, describe solution draft and include tests. | |
| - When there is a package with version and GitHub Actions workflows for automatic release, update the version (or other necessary release trigger) in your pull request to prepare for next release. | |
| - When you update existing pr 75, use gh pr edit to modify title and description. | |
| - When you are about to commit or push code, ALWAYS run local CI checks first if they are available in contributing guidelines (like ruff check, mypy, eslint, etc.) to catch errors before pushing. | |
| - When you finalize the pull request: | |
| follow style from merged prs for code, title, and description, | |
| make sure no uncommitted changes corresponding to the original requirements are left behind, | |
| make sure the default branch is merged to the pull request's branch, | |
| make sure all CI checks passing if they exist before you finish, | |
| check for latest comments on the issue and pull request to ensure no recent feedback was missed, | |
| double-check that all changes in the pull request answer to original requirements of the issue, | |
| make sure no new new bugs are introduced in pull request by carefully reading gh pr diff, | |
| make sure no previously existing features were removed without an explicit request from users via the issue description, issue comments, and/or pull request comments. | |
| - When you finish implementation, use gh pr ready 75. | |
| Workflow and collaboration. | |
| - When you check branch, verify with git branch --show-current. | |
| - When you push, push only to branch issue-74-63e6e08be062. | |
| - When you finish, create a pull request from branch issue-74-63e6e08be062. (Note: PR 75 already exists, update it instead) | |
| - When you organize workflow, use pull requests instead of direct merges to default branch (main or master). | |
| - When you manage commits, preserve commit history for later analysis. | |
| - When you contribute, keep repository history forward-moving with regular commits, pushes, and reverts if needed. | |
| - When you face conflict that you cannot resolve yourself, ask for help. | |
| - When you collaborate, respect branch protections by working only on issue-74-63e6e08be062. | |
| - When you mention result, include pull request url or comment url. | |
| - When you need to create pr, remember pr 75 already exists for this branch. | |
| Self review. | |
| - When you check your solution draft, run all tests locally. | |
| - When you check your solution draft, verify git status shows a clean working tree with no uncommitted changes. | |
| - When you compare with repo style, use gh pr diff [number]. | |
| - When you finalize, confirm code, tests, and description are consistent. | |
| GitHub CLI command patterns. | |
| - IMPORTANT: Always use --paginate flag when fetching lists from GitHub API to ensure all results are returned (GitHub returns max 30 per page by default). | |
| - When listing PR review comments (inline code comments), use gh api repos/OWNER/REPO/pulls/NUMBER/comments --paginate. | |
| - When listing PR conversation comments, use gh api repos/OWNER/REPO/issues/NUMBER/comments --paginate. | |
| - When listing PR reviews, use gh api repos/OWNER/REPO/pulls/NUMBER/reviews --paginate. | |
| - When listing issue comments, use gh api repos/OWNER/REPO/issues/NUMBER/comments --paginate. | |
| - When adding PR comment, use gh pr comment NUMBER --body \"text\" --repo OWNER/REPO. | |
| - When adding issue comment, use gh issue comment NUMBER --body \"text\" --repo OWNER/REPO. | |
| - When viewing PR details, use gh pr view NUMBER --repo OWNER/REPO. | |
| - When filtering with jq, use gh api repos/\${owner}/\${repo}/pulls/\${prNumber}/comments --paginate --jq 'reverse | .[0:5]'. | |
| Playwright MCP usage (browser automation via mcp__playwright__* tools). | |
| - When you develop frontend web applications (HTML, CSS, JavaScript, React, Vue, Angular, etc.), use Playwright MCP tools to test the UI in a real browser. | |
| - When WebFetch tool fails to retrieve expected content (e.g., returns empty content, JavaScript-rendered pages, or login-protected pages), use Playwright MCP tools (browser_navigate, browser_snapshot) as a fallback for web browsing. | |
| - When you need to interact with dynamic web pages that require JavaScript execution, use Playwright MCP tools. | |
| - When you need to visually verify how a web page looks or take screenshots, use browser_take_screenshot from Playwright MCP. | |
| - When you need to fill forms, click buttons, or perform user interactions on web pages, use Playwright MCP tools (browser_click, browser_type, browser_fill_form). | |
| - When you need to test responsive design or different viewport sizes, use browser_resize from Playwright MCP. | |
| - When you finish using the browser, always close it with browser_close to free resources." | jq -c .) | |
| [2026-01-28T20:03:04.855Z] [INFO] | |
| [2026-01-28T20:03:04.855Z] [INFO] 📋 User prompt: | |
| [2026-01-28T20:03:04.855Z] [INFO] ---BEGIN USER PROMPT--- | |
| [2026-01-28T20:03:04.855Z] [INFO] Issue to solve: https://github.com/VisageDvachevsky/veil-windows-client/issues/74 | |
| Your prepared branch: issue-74-63e6e08be062 | |
| Your prepared working directory: /tmp/gh-issue-solver-1769630568012 | |
| Your prepared Pull Request: https://github.com/VisageDvachevsky/veil-windows-client/pull/75 | |
| Your forked repository: konard/VisageDvachevsky-veil-windows-client | |
| Original repository (upstream): VisageDvachevsky/veil-windows-client | |
| GitHub Actions on your fork: https://github.com/konard/VisageDvachevsky-veil-windows-client/actions?query=branch%3Aissue-74-63e6e08be062 | |
| New comments on the pull request: 4 | |
| Pull request description was edited after last commit | |
| Continue. | |
| [2026-01-28T20:03:04.855Z] [INFO] ---END USER PROMPT--- | |
| [2026-01-28T20:03:04.855Z] [INFO] | |
| [2026-01-28T20:03:04.856Z] [INFO] 📋 System prompt: | |
| [2026-01-28T20:03:04.856Z] [INFO] ---BEGIN SYSTEM PROMPT--- | |
| [2026-01-28T20:03:04.856Z] [INFO] You are an AI issue solver. You prefer to find the root cause of each and every issue. When you talk, you prefer to speak with facts which you have double-checked yourself or cite sources that provide evidence, like quote actual code or give references to documents or pages found on the internet. You are polite and patient, and prefer to assume good intent, trying your best to be helpful. If you are unsure or have assumptions, you prefer to test them yourself or ask questions to clarify requirements. | |
| General guidelines. | |
| - When you execute commands, always save their logs to files for easier reading if the output becomes large. | |
| - When running commands, do not set a timeout yourself — let them run as long as needed (default timeout - 2 minutes is more than enough), and once they finish, review the logs in the file. | |
| - When running sudo commands (especially package installations like apt-get, yum, npm install, etc.), always run them in the background to avoid timeout issues and permission errors when the process needs to be killed. Use the run_in_background parameter or append & to the command. | |
| - When CI is failing or user reports failures, consider adding a detailed investigation protocol to your todo list with these steps: | |
| Step 1: List recent runs with timestamps using: gh run list --repo VisageDvachevsky/veil-windows-client --branch issue-74-63e6e08be062 --limit 5 --json databaseId,conclusion,createdAt,headSha | |
| Step 2: Verify runs are after the latest commit by checking timestamps and SHA | |
| Step 3: For each non-passing run, download logs to preserve them: gh run view {run-id} --repo VisageDvachevsky/veil-windows-client --log > ci-logs/{workflow}-{run-id}.log | |
| Step 4: Read each downloaded log file using Read tool to understand the actual failures | |
| Step 5: Report findings with specific errors and line numbers from logs | |
| This detailed investigation is especially helpful when user mentions CI failures, asks to investigate logs, you see non-passing status, or when finalizing a PR. | |
| Note: If user says "failing" but tools show "passing", this might indicate stale data - consider downloading fresh logs and checking timestamps to resolve the discrepancy. | |
| - When a code or log file has more than 1500 lines, read it in chunks of 1500 lines. | |
| - When facing a complex problem, do as much tracing as possible and turn on all verbose modes. | |
| - When you create debug, test, or example/experiment scripts for fixing, always keep them in an examples and/or experiments folders so you can reuse them later. | |
| - When testing your assumptions, use the experiment scripts, and add it to experiments folder. | |
| - When your experiments can show real world use case of the software, add it to examples folder. | |
| - When you face something extremely hard, use divide and conquer — it always helps. | |
| Initial research. | |
| - When you start, make sure you create detailed plan for yourself and follow your todo list step by step, make sure that as many points from these guidelines are added to your todo list to keep track of everything that can help you solve the issue with highest possible quality. | |
| - When user mentions CI failures or asks to investigate logs, consider adding these todos to track the investigation: (1) List recent CI runs with timestamps, (2) Download logs from failed runs to ci-logs/ directory, (3) Analyze error messages and identify root cause, (4) Implement fix, (5) Verify fix resolves the specific errors found in logs. | |
| - When you read issue, read all details and comments thoroughly. | |
| - When you see screenshots or images in issue descriptions, pull request descriptions, comments, or discussions, use WebFetch tool (or fetch tool) to download the image first, then use Read tool to view and analyze it. IMPORTANT: Before reading downloaded images with the Read tool, verify the file is a valid image (not HTML). Use a CLI tool like 'file' command to check the actual file format. Reading corrupted or non-image files (like GitHub's HTML 404 pages saved as .png) can cause "Could not process image" errors and may crash the AI solver process. If the file command shows "HTML" or "text", the download failed and you should retry or skip the image. | |
| - When you need issue details, use gh issue view https://github.com/VisageDvachevsky/veil-windows-client/issues/74. | |
| - When you need related code, use gh search code --owner VisageDvachevsky [keywords]. | |
| - When you need repo context, read files in your working directory. | |
| - When you study related work, study the most recent related pull requests. | |
| - When issue is not defined enough, write a comment to ask clarifying questions. | |
| - When accessing GitHub Gists (especially private ones), use gh gist view command instead of direct URL fetching to ensure proper authentication. | |
| - When you are fixing a bug, please make sure you first find the actual root cause, do as many experiments as needed. | |
| - When you are fixing a bug and code does not have enough tracing/logs, add them and make sure they stay in the code, but are switched off by default. | |
| - When you need comments on a pull request, note that GitHub has THREE different comment types with different API endpoints: | |
| 1. PR review comments (inline code comments): gh api repos/VisageDvachevsky/veil-windows-client/pulls/75/comments --paginate | |
| 2. PR conversation comments (general discussion): gh api repos/VisageDvachevsky/veil-windows-client/issues/75/comments --paginate | |
| 3. PR reviews (approve/request changes): gh api repos/VisageDvachevsky/veil-windows-client/pulls/75/reviews --paginate | |
| IMPORTANT: The command "gh pr view --json comments" ONLY returns conversation comments and misses review comments! | |
| - When you need latest comments on issue, use gh api repos/VisageDvachevsky/veil-windows-client/issues/74/comments --paginate. | |
| Solution development and testing. | |
| - When issue is solvable, implement code with tests. | |
| - When implementing features, search for similar existing implementations in the codebase and use them as examples instead of implementing everything from scratch. | |
| - When coding, each atomic step that can be useful by itself should be commited to the pull request's branch, meaning if work will be interrupted by any reason parts of solution will still be kept intact and safe in pull request. | |
| - When you test: | |
| start from testing of small functions using separate scripts; | |
| write unit tests with mocks for easy and quick start. | |
| - When you test integrations, use existing framework. | |
| - When you test solution draft, include automated checks in pr. | |
| - When issue is unclear, write comment on issue asking questions. | |
| - When you encounter any problems that you unable to solve yourself (any human feedback or help), write a comment to the pull request asking for help. | |
| - When you need human help, use gh pr comment 75 --body "your message" to comment on existing PR. | |
| Preparing pull request. | |
| - When you code, follow contributing guidelines. | |
| - When you commit, write clear message. | |
| - When you need examples of style, use gh pr list --repo VisageDvachevsky/veil-windows-client --state merged --search [keywords]. | |
| - When you open pr, describe solution draft and include tests. | |
| - When there is a package with version and GitHub Actions workflows for automatic release, update the version (or other necessary release trigger) in your pull request to prepare for next release. | |
| - When you update existing pr 75, use gh pr edit to modify title and description. | |
| - When you are about to commit or push code, ALWAYS run local CI checks first if they are available in contributing guidelines (like ruff check, mypy, eslint, etc.) to catch errors before pushing. | |
| - When you finalize the pull request: | |
| follow style from merged prs for code, title, and description, | |
| make sure no uncommitted changes corresponding to the original requirements are left behind, | |
| make sure the default branch is merged to the pull request's branch, | |
| make sure all CI checks passing if they exist before you finish, | |
| check for latest comments on the issue and pull request to ensure no recent feedback was missed, | |
| double-check that all changes in the pull request answer to original requirements of the issue, | |
| make sure no new new bugs are introduced in pull request by carefully reading gh pr diff, | |
| make sure no previously existing features were removed without an explicit request from users via the issue description, issue comments, and/or pull request comments. | |
| - When you finish implementation, use gh pr ready 75. | |
| Workflow and collaboration. | |
| - When you check branch, verify with git branch --show-current. | |
| - When you push, push only to branch issue-74-63e6e08be062. | |
| - When you finish, create a pull request from branch issue-74-63e6e08be062. (Note: PR 75 already exists, update it instead) | |
| - When you organize workflow, use pull requests instead of direct merges to default branch (main or master). | |
| - When you manage commits, preserve commit history for later analysis. | |
| - When you contribute, keep repository history forward-moving with regular commits, pushes, and reverts if needed. | |
| - When you face conflict that you cannot resolve yourself, ask for help. | |
| - When you collaborate, respect branch protections by working only on issue-74-63e6e08be062. | |
| - When you mention result, include pull request url or comment url. | |
| - When you need to create pr, remember pr 75 already exists for this branch. | |
| Self review. | |
| - When you check your solution draft, run all tests locally. | |
| - When you check your solution draft, verify git status shows a clean working tree with no uncommitted changes. | |
| - When you compare with repo style, use gh pr diff [number]. | |
| - When you finalize, confirm code, tests, and description are consistent. | |
| GitHub CLI command patterns. | |
| - IMPORTANT: Always use --paginate flag when fetching lists from GitHub API to ensure all results are returned (GitHub returns max 30 per page by default). | |
| - When listing PR review comments (inline code comments), use gh api repos/OWNER/REPO/pulls/NUMBER/comments --paginate. | |
| - When listing PR conversation comments, use gh api repos/OWNER/REPO/issues/NUMBER/comments --paginate. | |
| - When listing PR reviews, use gh api repos/OWNER/REPO/pulls/NUMBER/reviews --paginate. | |
| - When listing issue comments, use gh api repos/OWNER/REPO/issues/NUMBER/comments --paginate. | |
| - When adding PR comment, use gh pr comment NUMBER --body "text" --repo OWNER/REPO. | |
| - When adding issue comment, use gh issue comment NUMBER --body "text" --repo OWNER/REPO. | |
| - When viewing PR details, use gh pr view NUMBER --repo OWNER/REPO. | |
| - When filtering with jq, use gh api repos/${owner}/${repo}/pulls/${prNumber}/comments --paginate --jq 'reverse | .[0:5]'. | |
| Playwright MCP usage (browser automation via mcp__playwright__* tools). | |
| - When you develop frontend web applications (HTML, CSS, JavaScript, React, Vue, Angular, etc.), use Playwright MCP tools to test the UI in a real browser. | |
| - When WebFetch tool fails to retrieve expected content (e.g., returns empty content, JavaScript-rendered pages, or login-protected pages), use Playwright MCP tools (browser_navigate, browser_snapshot) as a fallback for web browsing. | |
| - When you need to interact with dynamic web pages that require JavaScript execution, use Playwright MCP tools. | |
| - When you need to visually verify how a web page looks or take screenshots, use browser_take_screenshot from Playwright MCP. | |
| - When you need to fill forms, click buttons, or perform user interactions on web pages, use Playwright MCP tools (browser_click, browser_type, browser_fill_form). | |
| - When you need to test responsive design or different viewport sizes, use browser_resize from Playwright MCP. | |
| - When you finish using the browser, always close it with browser_close to free resources. | |
| [2026-01-28T20:03:04.856Z] [INFO] ---END SYSTEM PROMPT--- | |
| [2026-01-28T20:03:04.856Z] [INFO] | |
| [2026-01-28T20:03:04.857Z] [INFO] 📊 CLAUDE_CODE_MAX_OUTPUT_TOKENS: 64000 | |
| [2026-01-28T20:03:04.858Z] [INFO] 📋 Command details: | |
| [2026-01-28T20:03:04.858Z] [INFO] 📂 Working directory: /tmp/gh-issue-solver-1769630568012 | |
| [2026-01-28T20:03:04.858Z] [INFO] 🌿 Branch: issue-74-63e6e08be062 | |
| [2026-01-28T20:03:04.858Z] [INFO] 🤖 Model: Claude OPUS | |
| [2026-01-28T20:03:04.858Z] [INFO] 🍴 Fork: konard/VisageDvachevsky-veil-windows-client | |
| [2026-01-28T20:03:04.858Z] [INFO] | |
| ▶️ Streaming output: | |
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| "type": "system", | |
| "subtype": "init", | |
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| "Task", | |
| "TaskOutput", | |
| "Bash", | |
| "Glob", | |
| "Grep", | |
| "ExitPlanMode", | |
| "Read", | |
| "Edit", | |
| "Write", | |
| "NotebookEdit", | |
| "WebFetch", | |
| "TodoWrite", | |
| "WebSearch", | |
| "TaskStop", | |
| "AskUserQuestion", | |
| "Skill", | |
| "EnterPlanMode", | |
| "ToolSearch", | |
| "mcp__playwright__browser_close", | |
| "mcp__playwright__browser_resize", | |
| "mcp__playwright__browser_console_messages", | |
| "mcp__playwright__browser_handle_dialog", | |
| "mcp__playwright__browser_evaluate", | |
| "mcp__playwright__browser_file_upload", | |
| "mcp__playwright__browser_fill_form", | |
| "mcp__playwright__browser_install", | |
| "mcp__playwright__browser_press_key", | |
| "mcp__playwright__browser_type", | |
| "mcp__playwright__browser_navigate", | |
| "mcp__playwright__browser_navigate_back", | |
| "mcp__playwright__browser_network_requests", | |
| "mcp__playwright__browser_run_code", | |
| "mcp__playwright__browser_take_screenshot", | |
| "mcp__playwright__browser_snapshot", | |
| "mcp__playwright__browser_click", | |
| "mcp__playwright__browser_drag", | |
| "mcp__playwright__browser_hover", | |
| "mcp__playwright__browser_select_option", | |
| "mcp__playwright__browser_tabs", | |
| "mcp__playwright__browser_wait_for" | |
| ], | |
| "mcp_servers": [ | |
| { | |
| "name": "playwright", | |
| "status": "connected" | |
| } | |
| ], | |
| "model": "claude-opus-4-5-20251101", | |
| "permissionMode": "bypassPermissions", | |
| "slash_commands": [ | |
| "compact", | |
| "context", | |
| "cost", | |
| "init", | |
| "pr-comments", | |
| "release-notes", | |
| "review", | |
| "security-review" | |
| ], | |
| "apiKeySource": "none", | |
| "claude_code_version": "2.1.19", | |
| "output_style": "default", | |
| "agents": [ | |
| "Bash", | |
| "general-purpose", | |
| "statusline-setup", | |
| "Explore", | |
| "Plan" | |
| ], | |
| "skills": [], | |
| "plugins": [], | |
| "uuid": "5d516df5-34f7-40a0-b8dd-d5f4ed0b4af9" | |
| } | |
| [2026-01-28T20:03:06.736Z] [INFO] 📌 Session ID: 6ac110f2-5246-48ec-bb5d-4c5387d4b6ad | |
| [2026-01-28T20:03:06.737Z] [INFO] 📁 Log renamed to: /home/hive/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad.log | |
| [2026-01-28T20:03:12.373Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01METSPv1YxBoPC9fmDJ3fnt", | |
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| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01BRwBdSehNNYu2stm7iNMxv", | |
| "name": "Bash", | |
| "input": { | |
| "command": "gh pr view 75 --repo VisageDvachevsky/veil-windows-client --json title,body,state,url 2>&1", | |
| "description": "View PR 75 details to understand current state" | |
| } | |
| } | |
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| "stop_reason": null, | |
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| "usage": { | |
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| "service_tier": "standard" | |
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| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
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| [2026-01-28T20:03:13.639Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
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| "id": "toolu_01AgeJavXo8tQYVWkUc5aGx4", | |
| "name": "Bash", | |
| "input": { | |
| "command": "gh api repos/VisageDvachevsky/veil-windows-client/pulls/75/comments --paginate 2>&1 | head -500", | |
| "description": "Get PR review comments (inline code comments)" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 2, | |
| "cache_creation_input_tokens": 7159, | |
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| "input": { | |
| "command": "gh api repos/VisageDvachevsky/veil-windows-client/issues/75/comments --paginate 2>&1", | |
| "description": "Get PR conversation comments" | |
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| [2026-01-28T20:03:15.886Z] [INFO] { | |
| "type": "user", | |
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| "role": "user", | |
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| "tool_use_id": "toolu_01BRwBdSehNNYu2stm7iNMxv", | |
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| "content": "{\"body\":\"## Summary\\n- Fix tunnel IP mismatch that prevents return packets from being routed back to clients\\n- Add `update_tunnel_ip()` method to dynamically synchronize server's session table with client's actual source IP\\n\\n## Problem\\nWhen a client uses its own configured tunnel IP (e.g., `10.8.0.2`) instead of the server-assigned IP (e.g., `10.8.0.254` from the pool), return packets from the internet cannot be routed back to the client. This happens because:\\n\\n1. Server assigns IP `10.8.0.254` from pool and indexes session by this IP\\n2. Client uses its own configured IP `10.8.0.2` as source in outgoing packets \\n3. Return packets come back with destination `10.8.0.2`\\n4. Server's `find_by_tunnel_ip(\\\"10.8.0.2\\\")` returns `nullptr` because session is indexed by `10.8.0.254`\\n5. Packets are dropped, sites don't load\\n\\n## Solution\\nExtract the source IP from incoming data packets and dynamically update the session's `tunnel_ip` to match the client's actual IP. This ensures the session can be found when routing return traffic.\\n\\n## Changes\\n- `src/server/session_table.h` - Add `update_tunnel_ip()` method declaration\\n- `src/server/session_table.cpp` - Add implementation that updates IP index and session\\n- `src/server/main.cpp` - Extract source IP from IPv4 header and call `update_tunnel_ip()`\\n\\n## Test plan\\n- [x] Build passes (53/53 targets)\\n- [x] Unit tests pass (11/11 SessionTable tests)\\n- [ ] Manual testing with client configured to use custom tunnel IP\\n\\nFixes #74\\n\\n🤖 Generated with [Claude Code](https://claude.com/claude-code)\",\"state\":\"OPEN\",\"title\":\"Fix tunnel IP mismatch preventing return traffic routing (Issue #74)\",\"url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75\"}", | |
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| "stdout": "{\"body\":\"## Summary\\n- Fix tunnel IP mismatch that prevents return packets from being routed back to clients\\n- Add `update_tunnel_ip()` method to dynamically synchronize server's session table with client's actual source IP\\n\\n## Problem\\nWhen a client uses its own configured tunnel IP (e.g., `10.8.0.2`) instead of the server-assigned IP (e.g., `10.8.0.254` from the pool), return packets from the internet cannot be routed back to the client. This happens because:\\n\\n1. Server assigns IP `10.8.0.254` from pool and indexes session by this IP\\n2. Client uses its own configured IP `10.8.0.2` as source in outgoing packets \\n3. Return packets come back with destination `10.8.0.2`\\n4. Server's `find_by_tunnel_ip(\\\"10.8.0.2\\\")` returns `nullptr` because session is indexed by `10.8.0.254`\\n5. Packets are dropped, sites don't load\\n\\n## Solution\\nExtract the source IP from incoming data packets and dynamically update the session's `tunnel_ip` to match the client's actual IP. This ensures the session can be found when routing return traffic.\\n\\n## Changes\\n- `src/server/session_table.h` - Add `update_tunnel_ip()` method declaration\\n- `src/server/session_table.cpp` - Add implementation that updates IP index and session\\n- `src/server/main.cpp` - Extract source IP from IPv4 header and call `update_tunnel_ip()`\\n\\n## Test plan\\n- [x] Build passes (53/53 targets)\\n- [x] Unit tests pass (11/11 SessionTable tests)\\n- [ ] Manual testing with client configured to use custom tunnel IP\\n\\nFixes #74\\n\\n🤖 Generated with [Claude Code](https://claude.com/claude-code)\",\"state\":\"OPEN\",\"title\":\"Fix tunnel IP mismatch preventing return traffic routing (Issue #74)\",\"url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75\"}", | |
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| [2026-01-28T20:03:18.406Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KvwARke6bXPTkhpHPipug2","type":"tool_result","content":"<persisted-output>\nOutput too large (31.1KB). 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логи daemon процесса https://gist.github.com/VisageDvachevsky/7edb57da8efa1a56ed9f71f64adf039e\\r\\nа вот сервера https://gist.github.com/VisageDvachevsky/1bf69376f7304c5aca78a31b11a50f75\\r\\n\\r\\nчто-то как-то... не очень\\r\\nпоследние логи с ретрансимссией сделаны вообще когда я уже дисконнектнул клиента (все что произошло на сервере после 2026-01-28 21:43:37.576 [info] Tunnel state changed: 3 -> 0) это уже после дисконнекта 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**AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T18:46:39.924Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813183314/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813260543\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813260543\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813260543,\"node_id\":\"IC_kwDOQ-Z-Ps7jSbz_\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:56:59Z\",\"updated_at\":\"2026-01-28T18:56:59Z\",\"body\":\"## 🔧 Additional Fix Applied\\n\\nAfter analyzing the new logs you provided, I found another bug that was causing problems:\\n\\n### Problem Found\\nLooking at the server logs, I noticed entries like:\\n```\\n2026-01-28 19:43:34.747 [info] Updated tunnel IP for session 1 from 0.0.0.0 to 0.0.0.0 (client uses own IP)\\n```\\n\\nThe code was extracting source IP from **every data frame**, but not all frames contain valid IPv4 packets. Some frames might contain:\\n- IPv6 traffic (different header format)\\n- Non-IP data\\n- Malformed packets\\n\\nThis caused the session's `tunnel_ip` to be incorrectly set to `0.0.0.0`, which would break the return traffic routing because `find_by_tunnel_ip(\\\"10.8.0.2\\\")` wouldn't find a session indexed by `0.0.0.0`.\\n\\n### Fix Applied\\n1. **Added IPv4 version check** - Before extracting the source IP, the code now verifies that the first nibble of the packet is `4` (IPv4 version field)\\n2. **Added non-zero IP validation** - Even if the packet passes the IPv4 check, we now verify the source IP is non-zero before updating\\n3. **Enhanced TUN read logging** - Changed from DEBUG to WARN level to help see return traffic routing in the logs\\n\\n### Additional Observation\\nThe server logs you provided don't show any \\\"TUN read\\\" messages at all. This means either:\\n1. The server isn't receiving return traffic from the internet (NAT/routing issue on the server), OR \\n2. The TUN read logging was at DEBUG level (fixed now to WARN)\\n\\nWith this new commit, you should see in the server logs:\\n- `TUN read: N bytes, X.X.X.X -> Y.Y.Y.Y` - When the server reads return packets from TUN\\n- `Routing N bytes to session X` - When it successfully routes to a client\\n- `No session found for tunnel IP X.X.X.X` - If routing fails\\n\\nPlease test again and share the new logs. The TUN read logging will help us identify if the issue is:\\n- Server not receiving return traffic (no TUN read logs) - would indicate NAT/routing configuration issue\\n- Session not found (TUN read logs but \\\"No session found\\\") - would indicate session table issue\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813260543/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813333950\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813333950\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813333950,\"node_id\":\"IC_kwDOQ-Z-Ps7jStu-\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:08:25Z\",\"updated_at\":\"2026-01-28T19:08:25Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the solution to address the issues found in the previous feedback.\\n\\n### Summary of Changes in Latest Commit (fded009)\\n\\n**Issue Found**: The tunnel IP was being incorrectly updated to `0.0.0.0` for some packets because the code extracted source IP from all data frames, not just valid IPv4 packets.\\n\\n**Fixes Applied**:\\n1. ✅ Added IPv4 version check (`(payload[0] >> 4) == 4`) before extracting source IP\\n2. ✅ Added non-zero IP validation (`src_ip != 0`) before updating session tunnel IP\\n3. ✅ Enhanced TUN read logging from DEBUG to WARN level for better diagnostics\\n\\n**All CI Checks Passed**:\\n- ✅ Build and Test (All)\\n- ✅ Integration Tests\\n- ✅ Unit Tests\\n- ✅ Security Tests\\n- ✅ Network Emulation Tests\\n- ✅ Linux Build (ubuntu-22.04, ubuntu-24.04)\\n- ✅ Windows Build (x64)\\n\\n---\\n*Now working session is ended, feel free to review and test the fix. Please share new logs after testing, especially looking for \\\"TUN read\\\" messages which will help diagnose if there are any remaining issues with return traffic routing.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813333950/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813335569\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813335569\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813335569,\"node_id\":\"IC_kwDOQ-Z-Ps7jSuIR\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:08:42Z\",\"updated_at\":\"2026-01-28T19:08:42Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $4.877325 USD\\n- Calculated by Anthropic: $3.352397 USD\\n- Difference: $-1.524928 (-31.27%)\\n📎 **Log file uploaded as Gist** (802KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/2bca41b711483227c47b50ae4651a38c/raw/73658accb068389c3491f0b8d4a0b04bec0fd4fd/solution-draft-log-pr-1769627317783.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813335569/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813411094\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813411094\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813411094,\"node_id\":\"IC_kwDOQ-Z-Ps7jTAkW\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:25:19Z\",\"updated_at\":\"2026-01-28T19:25:19Z\",\"body\":\"вот логи демона https://gist.github.com/VisageDvachevsky/4a797bafec705758c65ec47331f58989\\r\\nа вот сервера https://gist.github.com/VisageDvachevsky/968071d542d18849fbba3f9db0e0d468\\r\\n\\r\\nвсе еще не могу никуда зайти. В общем, порефактори код, получше углубись в него, в документацию проекта, также попробуй у себя поднять сервер и клиент и локально все починить, чтоб точно работало, а потом делай коммиты только. \\r\\nПотому что сейчас вся работа происходит поверхностно и ничего не фиксит \",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813411094/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813414655\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813414655\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813414655,\"node_id\":\"IC_kwDOQ-Z-Ps7jTBb_\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:26:03Z\",\"updated_at\":\"2026-01-28T19:26:03Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T19:26:01.219Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813414655/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813496776\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813496776\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813496776,\"node_id\":\"IC_kwDOQ-Z-Ps7jTVfI\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:43:01Z\",\"updated_at\":\"2026-01-28T19:43:01Z\",\"body\":\"## 🔍 Diagnostic Logging Added\\n\\nI've added comprehensive logging to help diagnose the return traffic routing issue. The new logs will reveal exactly what's happening at the TUN device layer.\\n\\n### What's New in This Commit\\n\\n**Client-side TUN write logging (`tunnel.cpp`):**\\n```\\nTUN write: 60 bytes -> 10.8.0.2\\n```\\nThis shows when the client successfully writes a packet to the TUN device, along with the destination IP.\\n\\n**TUN device layer logging (`tun_device_*.cpp`):**\\n```\\nTunDevice::write: 60 bytes, IPv4 93.184.216.34 -> 10.8.0.2, IHL=5, proto=6, total_len=60\\nTunDevice::write: SUCCESS 60 bytes written/sent to Wintun\\n```\\nThis shows:\\n- Packet size\\n- Source and destination IPs\\n- IP Header Length (IHL)\\n- Protocol number (1=ICMP, 6=TCP, 17=UDP)\\n- Total length from IP header (helps detect truncation)\\n- Success/failure of the actual write operation\\n\\n### What to Look For in New Logs\\n\\nWhen you test again, please look for:\\n\\n1. **On the client (daemon logs):**\\n - `TunDevice::write: SUCCESS` messages - confirms packets reach Wintun\\n - The destination IPs should be `10.8.0.2` (your client's tunnel IP)\\n - Protocol numbers (6=TCP for web traffic)\\n\\n2. **On the server:**\\n - `TunDevice::write:` messages with more detail including IHL and protocol\\n - Any `failed to write` errors with specific reasons\\n\\n### Investigating the 50-byte \\\"Invalid argument\\\" Errors\\n\\nLooking at the previous server logs, I noticed 3 failures for 50-byte packets with \\\"Invalid argument\\\". The enhanced logging will now show:\\n- The exact IP addresses in those packets\\n- The IHL and protocol fields\\n- Whether the packets are malformed (wrong IP version, invalid header length, etc.)\\n\\n### Next Steps\\n\\n1. Please test with the new build from this PR\\n2. Share both daemon and server logs\\n3. Look for the `TunDevice::write` messages to understand what's happening\\n\\nThe logs should tell us exactly where the packets are getting lost in the chain:\\n- Server receives from internet ✓ (working based on previous logs)\\n- Server routes to client ✓ (working based on previous logs) \\n- Client receives and decrypts ✓ (working based on previous logs)\\n- **Client writes to TUN** ← NEW LOGGING HERE\\n- **TUN device accepts packet** ← NEW LOGGING HERE\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813496776/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813565018\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813565018\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813565018,\"node_id\":\"IC_kwDOQ-Z-Ps7jTmJa\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:55:37Z\",\"updated_at\":\"2026-01-28T19:55:37Z\",\"body\":\"## ✅ All CI Checks Passed\\n\\nAll CI workflows have passed for commit `0ca5efe`:\\n\\n- ✅ CI (Build and Test All)\\n- ✅ Unit Tests\\n- ✅ Integration Tests\\n- ✅ Security & Cryptography Tests\\n- ✅ Network Emulation Tests\\n- ✅ Connection Test\\n- ✅ Linux Build (ubuntu-22.04, ubuntu-24.04)\\n- ✅ Windows Build (x64)\\n\\n### Ready for Testing\\n\\nThe diagnostic logging has been added and verified. Please test with the new build and share the logs. The new logging will show exactly what's happening at the TUN write layer.\\n\\n**Key log patterns to look for:**\\n- `TunDevice::write: N bytes, IPv4 X.X.X.X -> Y.Y.Y.Y, IHL=5, proto=6, total_len=N`\\n- `TunDevice::write: SUCCESS N bytes written` or `sent to Wintun`\\n- `TUN write: N bytes -> X.X.X.X` (in tunnel.cpp)\\n\\nThis will help identify if:\\n1. Packets are reaching the TUN device layer\\n2. Packets are being successfully written\\n3. What IPs/protocols are being written\\n4. If any packets are malformed (wrong IP version, invalid header, etc.)\\n\\n---\\n*Working session continues to wait for testing results.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813565018/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813566672\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813566672\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813566672,\"node_id\":\"IC_kwDOQ-Z-Ps7jTmjQ\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:55:58Z\",\"updated_at\":\"2026-01-28T19:55:58Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $10.482819 USD\\n- Calculated by Anthropic: $7.159174 USD\\n- Difference: $-3.323645 (-31.71%)\\n📎 **Log file uploaded as Gist** (1803KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/880786881a4191f9820748b437a189dd/raw/b3a32a5dbfd89626f3c6d86e22eb8b9f940f6ada/solution-draft-log-pr-1769630153904.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813566672/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813607021\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813607021\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813607021,\"node_id\":\"IC_kwDOQ-Z-Ps7jTwZt\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T20:02:10Z\",\"updated_at\":\"2026-01-28T20:02:10Z\",\"body\":\"логи daemon процесса https://gist.github.com/VisageDvachevsky/bd70667663cc630174c46edce357e56f\\r\\nи логи с сервера https://gist.github.com/VisageDvachevsky/4237eeced4e5f73ed151aeb0ea2fd5b3\\r\\n\\r\\nпродолжай разбираться в чем проблема и где мы теряем пакеты\",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813607021/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813612121\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813612121\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813612121,\"node_id\":\"IC_kwDOQ-Z-Ps7jTxpZ\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T20:02:55Z\",\"updated_at\":\"2026-01-28T20:02:55Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T20:02:53.685Z\\n\\nThe PR has been converted to draft mode whil | |
| [2026-01-28T20:03:18.414Z] [INFO] e work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813612121/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null}]","stderr":"","interrupted":false,"isImage":false}} | |
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draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813045518/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813179074\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813179074\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813179074,\"node_id\":\"IC_kwDOQ-Z-Ps7jSH7C\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:46:06Z\",\"updated_at\":\"2026-01-28T18:46:06Z\",\"body\":\"вот логи daemon процесса https://gist.github.com/VisageDvachevsky/7edb57da8efa1a56ed9f71f64adf039e\\r\\nа вот сервера https://gist.github.com/VisageDvachevsky/1bf69376f7304c5aca78a31b11a50f75\\r\\n\\r\\nчто-то как-то... не очень\\r\\nпоследние логи с ретрансимссией сделаны вообще когда я уже дисконнектнул клиента (все что произошло на сервере после 2026-01-28 21:43:37.576 [info] Tunnel state changed: 3 -> 0) это уже после дисконнекта \",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813179074/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813183314\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813183314\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813183314,\"node_id\":\"IC_kwDOQ-Z-Ps7jSI9S\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konar 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| [2026-01-28T20:03:22.053Z] [INFO] d/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:46:41Z\",\"updated_at\":\"2026-01-28T18:46:41Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T18:46:39.924Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813183314/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813260543\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813260543\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813260543,\"node_id\":\"IC_kwDOQ-Z-Ps7jSbz_\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:56:59Z\",\"updated_at\":\"2026-01-28T18:56:59Z\",\"body\":\"## 🔧 Additional Fix Applied\\n\\nAfter analyzing the new logs you provided, I found another bug that was causing problems:\\n\\n### Problem Found\\nLooking at the server logs, I noticed entries like:\\n```\\n2026-01-28 19:43:34.747 [info] Updated tunnel IP for session 1 from 0.0.0.0 to 0.0.0.0 (client uses own IP)\\n```\\n\\nThe code was extracting source IP from **every data frame**, but not all frames contain valid IPv4 packets. Some frames might contain:\\n- IPv6 traffic (different header format)\\n- Non-IP data\\n- Malformed packets\\n\\nThis caused the session's `tunnel_ip` to be incorrectly set to `0.0.0.0`, which would break the return traffic routing because `find_by_tunnel_ip(\\\"10.8.0.2\\\")` wouldn't find a session indexed by `0.0.0.0`.\\n\\n### Fix Applied\\n1. **Added IPv4 version check** - Before extracting the source IP, the code now verifies that the first nibble of the packet is `4` (IPv4 version field)\\n2. **Added non-zero IP validation** - Even if the packet passes the IPv4 check, we now verify the source IP is non-zero before updating\\n3. **Enhanced TUN read logging** - Changed from DEBUG to WARN level to help see return traffic routing in the logs\\n\\n### Additional Observation\\nThe server logs you provided don't show any \\\"TUN read\\\" messages at all. This means either:\\n1. The server isn't receiving return traffic from the internet (NAT/routing issue on the server), OR \\n2. The TUN read logging was at DEBUG level (fixed now to WARN)\\n\\nWith this new commit, you should see in the server logs:\\n- `TUN read: N bytes, X.X.X.X -> Y.Y.Y.Y` - When the server reads return packets from TUN\\n- `Routing N bytes to session X` - When it successfully routes to a client\\n- `No session found for tunnel IP X.X.X.X` - If routing fails\\n\\nPlease test again and share the new logs. The TUN read logging will help us identify if the issue is:\\n- Server not receiving return traffic (no TUN read logs) - would indicate NAT/routing configuration issue\\n- Session not found (TUN read logs but \\\"No session found\\\") - would indicate session table issue\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813260543/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813333950\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813333950\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813333950,\"node_id\":\"IC_kwDOQ-Z-Ps7jStu-\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:08:25Z\",\"updated_at\":\"2026-01-28T19:08:25Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the solution to address the issues found in the previous feedback.\\n\\n### Summary of Changes in Latest Commit (fded009)\\n\\n**Issue Found**: The tunnel IP was being incorrectly updated to `0.0.0.0` for some packets because the code extracted source IP from all data frames, not just valid IPv4 packets.\\n\\n**Fixes Applied**:\\n1. ✅ Added IPv4 version check (`(payload[0] >> 4) == 4`) before extracting source IP\\n2. ✅ Added non-zero IP validation (`src_ip != 0`) before updating session tunnel IP\\n3. ✅ Enhanced TUN read logging from DEBUG to WARN level for better diagnostics\\n\\n**All CI Checks Passed**:\\n- ✅ Build and Test (All)\\n- ✅ Integration Tests\\n- ✅ Unit Tests\\n- ✅ Security Tests\\n- ✅ Network Emulation Tests\\n- ✅ Linux Build (ubuntu-22.04, ubuntu-24.04)\\n- ✅ Windows Build (x64)\\n\\n---\\n*Now working session is ended, feel free to review and test the fix. Please share new logs after testing, especially looking for \\\"TUN read\\\" messages which will help diagnose if there are any remaining issues with return traffic routing.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813333950/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813335569\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813335569\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813335569,\"node_id\":\"IC_kwDOQ-Z-Ps7jSuIR\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:08:42Z\",\"updated_at\":\"2026-01-28T19:08:42Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $4.877325 USD\\n- Calculated by Anthropic: $3.352397 USD\\n- Difference: $-1.524928 (-31.27%)\\n📎 **Log file uploaded as Gist** (802KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/2bca41b711483227c47b50ae4651a38c/raw/73658accb068389c3491f0b8d4a0b04bec0fd4fd/solution-draft-log-pr-1769627317783.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813335569/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813411094\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813411094\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813411094,\"node_id\":\"IC_kwDOQ-Z-Ps7jTAkW\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:25:19Z\",\"updated_at\":\"2026-01-28T19:25:19Z\",\"body\":\"вот логи демона https://gist.github.com/VisageDvachevsky/4a797bafec705758c65ec47331f58989\\r\\nа вот сервера https://gist.github.com/VisageDvachevsky/968071d542d18849fbba3f9db0e0d468\\r\\n\\r\\nвсе еще не могу никуда зайти. В общем, порефактори код, получше углубись в него, в документацию проекта, также попробуй у себя поднять сервер и клиент и локально все починить, чтоб точно работало, а потом делай коммиты только. \\r\\nПотому что сейчас вся работа происходит поверхностно и ничего не фиксит \",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813411094/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813414655\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813414655\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813414655,\"node_id\":\"IC_kwDOQ-Z-Ps7jTBb_\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:26:03Z\",\"updated_at\":\"2026-01-28T19:26:03Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T19:26:01.219Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813414655/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813496776\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813496776\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813496776,\"node_id\":\"IC_kwDOQ-Z-Ps7jTVfI\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:43:01Z\",\"updated_at\":\"2026-01-28T19:43:01Z\",\"body\":\"## 🔍 Diagnostic Logging Added\\n\\nI've added comprehensive logging to help diagnose the return traffic routing issue. The new logs will reveal exactly what's happening at the TUN device layer.\\n\\n### What's New in This Commit\\n\\n**Client-side TUN write logging (`tunnel.cpp`):**\\n```\\nTUN write: 60 bytes -> 10.8.0.2\\n```\\nThis shows when the client successfully writes a packet to the TUN device, along with the destination IP.\\n\\n**TUN device layer logging (`tun_device_*.cpp`):**\\n```\\nTunDevice::write: 60 bytes, IPv4 93.184.216.34 -> 10.8.0.2, IHL=5, proto=6, total_len=60\\nTunDevice::write: SUCCESS 60 bytes written/sent to Wintun\\n```\\nThis shows:\\n- Packet size\\n- Source and destination IPs\\n- IP Header Length (IHL)\\n- Protocol number (1=ICMP, 6=TCP, 17=UDP)\\n- Total length from IP header (helps detect truncation)\\n- Success/failure of the actual write operation\\n\\n### What to Look For in New Logs\\n\\nWhen you test again, please look for:\\n\\n1. **On the client (daemon logs):**\\n - `TunDevice::write: SUCCESS` messages - confirms packets reach Wintun\\n - The destination IPs should be `10.8.0.2` (your client's tunnel IP)\\n - Protocol numbers (6=TCP for web traffic)\\n\\n2. **On the server:**\\n - `TunDevice::write:` messages with more detail including IHL and protocol\\n - Any `failed to write` errors with specific reasons\\n\\n### Investigating the 50-byte \\\"Invalid argument\\\" Errors\\n\\nLooking at the previous server logs, I noticed 3 failures for 50-byte packets with \\\"Invalid argument\\\". The enhanced logging will now show:\\n- The exact IP addresses in those packets\\n- The IHL and protocol fields\\n- Whether the packets are malformed (wrong IP version, invalid header length, etc.)\\n\\n### Next Steps\\n\\n1. Please test with the new build from this PR\\n2. Share both daemon and server logs\\n3. Look for the `TunDevice::write` messages to understand what's happening\\n\\nThe logs should tell us exactly where the packets are getting lost in the chain:\\n- Server receives from internet ✓ (working based on previous logs)\\n- Server routes to client ✓ (working based on previous logs) \\n- Client receives and decrypts ✓ (working based on previous logs)\\n- **Client writes to TUN** ← NEW LOGGING HERE\\n- **TUN device accepts packet** ← NEW LOGGING HERE\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813496776/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813565018\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813565018\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813565018,\"node_id\":\"IC_kwDOQ-Z-Ps7jTmJa\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:55:37Z\",\"updated_at\":\"2026-01-28T19:55:37Z\",\"body\":\"## ✅ All CI Checks Passed\\n\\nAll CI workflows have passed for commit `0ca5efe`:\\n\\n- ✅ CI (Build and Test All)\\n- ✅ Unit Tests\\n- ✅ Integration Tests\\n- ✅ Security & Cryptography Tests\\n- ✅ Network Emulation Tests\\n- ✅ Connection Test\\n- ✅ Linux Build (ubuntu-22.04, ubuntu-24.04)\\n- ✅ Windows Build (x64)\\n\\n### Ready for Testing\\n\\nThe diagnostic logging has been added and verified. Please test with the new build and share the logs. The new logging will show exactly what's happening at the TUN write layer.\\n\\n**Key log patterns to look for:**\\n- `TunDevice::write: N bytes, IPv4 X.X.X.X -> Y.Y.Y.Y, IHL=5, proto=6, total_len=N`\\n- `TunDevice::write: SUCCESS N bytes written` or `sent to Wintun`\\n- `TUN write: N bytes -> X.X.X.X` (in tunnel.cpp)\\n\\nThis will help identify if:\\n1. Packets are reaching the TUN device layer\\n2. Packets are being successfully written\\n3. What IPs/protocols are being written\\n4. If any packets are malformed (wrong IP version, invalid header, etc.)\\n\\n---\\n*Working session continues to wait for testing results.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813565018/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813566672\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813566672\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813566672,\"node_id\":\"IC_kwDOQ-Z-Ps7jTmjQ\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:55:58Z\",\"updated_at\":\"2026-01-28T19:55:58Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $10.482819 USD\\n- Calculated by Anthropic: $7.159174 USD\\n- Difference: $-3.323645 (-31.71%)\\n📎 **Log file uploaded as Gist** (1803KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/880786881a4191f9820748b437a189dd/raw/b3a32a5dbfd89626f3c6d86e22eb8b9f940f6ada/solution-draft-log-pr-1769630153904.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813566672/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813607021\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813607021\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813607021,\"node_id\":\"IC_kwDOQ-Z-Ps7jTwZt\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T20:02:10Z\",\"updated_at\":\"2026-01-28T20:02:10Z\",\"body\":\"логи daemon процесса https://gist.github.com/VisageDvachevsky/bd70667663cc630174c46edce357e56f\\r\\nи логи с сервера https://gist.github.com/VisageDvachevsky/4237eeced4e5f73ed151aeb0ea2fd5b3\\r\\n\\r\\nпродолжай разбираться в чем проблема и где мы теряем пакеты\",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813607021/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813612121\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813612121\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813612121,\"node_id\":\"IC_kwDOQ-Z-Ps7jTxpZ\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T20:02:55Z\",\"updated_at\":\"2026-01-28T20:02:55Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T20:02:53.685Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813612121/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null}]\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"6ac110f2-5246-48ec-bb5d-4c5387d4b6ad","uuid":"039588c4-b378-4a93-be06-9dd9b1dda69f","tool_use_result":{"type":"text","file":{"filePath":"/home/hive/.claude/projects/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/tool-results/toolu_01KvwARke6bXPTkhpHPipug2.txt","content":"[{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813045518\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813045518\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813045518,\"node_id\":\"IC_kwDOQ-Z-Ps7jRnUO\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:23:19Z\",\"updated_at\":\"2026-01-28T18:23:19Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $5.450987 USD\\n- Calculated by Anthropic: $3.958707 USD\\n- Difference: $-1.492280 (-27.38%)\\n📎 **Log file uploaded as Gist** (971KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/70da7eb68297529ba3607353e31a6a4c/raw/f6a7a0d1e326a3ccfc7b1a1b794013907c3c44aa/solution-draft-log-pr-1769624594296.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813045518/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813179074\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813179074\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813179074,\"node_id\":\"IC_kwDOQ-Z-Ps7jSH7C\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:46:06Z\",\"updated_at\":\"2026-01-28T18:46:06Z\",\"body\":\"вот логи daemon процесса https://gist.github.com/VisageDvachevsky/7edb57da8efa1a56ed9f71f64adf039e\\r\\nа вот сервера https://gist.github.com/VisageDvachevsky/1bf69376f7304c5aca78a31b11a50f75\\r\\n\\r\\nчто-то как-то... не очень\\r\\nпоследние логи с ретрансимссией сделаны вообще когда я уже дисконнектнул клиента (все что произошло на сервере после 2026-01-28 21:43:37.576 [info] Tunnel state changed: 3 -> 0) это уже после дисконнекта \",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813179074/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813183314\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813183314\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813183314,\"node_id\":\"IC_kwDOQ-Z-Ps7jSI9S\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:46:41Z\",\"updated_at\":\"2026-01-28T18:46:41Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T18:46:39.924Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813183314/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813260543\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813260543\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813260543,\"node_id\":\"IC_kwDOQ-Z-Ps7jSbz_\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T18:56:59Z\",\"updated_at\":\"2026-01-28T18:56:59Z\",\"body\":\"## 🔧 Additional Fix Applied\\n\\nAfter analyzing the new logs you provided, I found another bug that was causing problems:\\n\\n### Problem Found\\nLooking at the server logs, I noticed entries like:\\n```\\n2026-01-28 19:43:34.747 [info] Updated tunnel IP for session 1 from 0.0.0.0 to 0.0.0.0 (client uses own IP)\\n```\\n\\nThe code was extracting source IP from **every data frame**, but not all frames contain valid IPv4 packets. Some frames might contain:\\n- IPv6 traffic (different header format)\\n- Non-IP data\\n- Malformed packets\\n\\nThis caused the session's `tunnel_ip` to be incorrectly set to `0.0.0.0`, which would break the return traffic routing because `find_by_tunnel_ip(\\\"10.8.0.2\\\")` wouldn't find a session indexed by `0.0.0.0`.\\n\\n### Fix Applied\\n1. **Added IPv4 version check** - Before extracting the source IP, the code now verifies that the first nibble of the packet is `4` (IPv4 version field)\\n2. **Added non-zero IP validation** - Even if the packet passes the IPv4 check, we now verify the source IP is non-zero before updating\\n3. **Enhanced TUN read logging** - Changed from DEBUG to WARN level to help see return traffic routing in the logs\\n\\n### Additional Observation\\nThe server logs you provided don't show any \\\"TUN read\\\" messages at all. This means either:\\n1. The server isn't receiving return traffic from the internet (NAT/routing issue on the server), OR \\n2. The TUN read logging was at DEBUG level (fixed now to WARN)\\n\\nWith this new commit, you should see in the server logs:\\n- `TUN read: N bytes, X.X.X.X -> Y.Y.Y.Y` - When the server reads return packets from TUN\\n- `Routing N bytes to session X` - When it successfully routes to a client\\n- `No session found for tunnel IP X.X.X.X` - If routing fails\\n\\nPlease test again and share the new logs. The TUN read logging will help us identify if the issue is:\\n- Server not receiving return traffic (no TUN read logs) - would indicate NAT/routing configuration issue\\n- Session not found (TUN read logs but \\\"No session found\\\") - would indicate session table issue\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813260543/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813333950\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813333950\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813333950,\"node_id\":\"IC_kwDOQ-Z-Ps7jStu-\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:08:25Z\",\"updated_at\":\"2026-01-28T19:08:25Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the solution to address the issues found in the previous feedback.\\n\\n### Summary of Changes in Latest Commit (fded009)\\n\\n**Issue Found**: The tunnel IP was being incorrectly updated to `0.0.0.0` for some packets because the code extracted source IP from all data frames, not just valid IPv4 packets.\\n\\n**Fixes Applied**:\\n1. ✅ Added IPv4 version check (`(payload[0] >> 4) == 4`) before extracting source IP\\n2. ✅ Added non-zero IP validation (`src_ip != 0`) before updating session tunnel IP\\n3. ✅ Enhanced TUN read logging from DEBUG to WARN level for better diagnostics\\n\\n**All CI Checks Passed**:\\n- ✅ Build and Test (All)\\n- ✅ Integration Tests\\n- ✅ Unit Tests\\n- ✅ Security Tests\\n- ✅ Network Emulation Tests\\n- ✅ Linux Build (ubuntu-22.04, ubuntu-24.04)\\n- ✅ Windows Build (x64)\\n\\n---\\n*Now working session is ended, feel free to review and test the fix. Please share new logs after testing, especially looking for \\\"TUN read\\\" messages which will help diagnose if there are any remaining issues with return traffic routing.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813333950/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813335569\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813335569\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813335569,\"node_id\":\"IC_kwDOQ-Z-Ps7jSuIR\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:08:42Z\",\"updated_at\":\"2026-01-28T19:08:42Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $4.877325 USD\\n- Calculated by Anthropic: $3.352397 USD\\n- Difference: $-1.524928 (-31.27%)\\n📎 **Log file uploaded as Gist** (802KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/2bca41b711483227c47b50ae4651a38c/raw/73658accb068389c3491f0b8d4a0b04bec0fd4fd/solution-draft-log-pr-1769627317783.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813335569/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813411094\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813411094\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813411094,\"node_id\":\"IC_kwDOQ-Z-Ps7jTAkW\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:25:19Z\",\"updated_at\":\"2026-01-28T19:25:19Z\",\"body\":\"вот логи демона https://gist.github.com/VisageDvachevsky/4a797bafec705758c65ec47331f58989\\r\\nа вот сервера https://gist.github.com/VisageDvachevsky/968071d542d18849fbba3f9db0e0d468\\r\\n\\r\\nвсе еще не могу никуда зайти. В общем, порефактори код, получше углубись в него, в документацию проекта, также попробуй у себя поднять сервер и клиент и локально все починить, чтоб точно работало, а потом делай коммиты только. \\r\\nПотому что сейчас вся работа происходит поверхностно и ничего не фиксит \",\"author_association\":\"OWNER\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813411094/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813414655\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813414655\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813414655,\"node_id\":\"IC_kwDOQ-Z-Ps7jTBb_\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:26:03Z\",\"updated_at\":\"2026-01-28T19:26:03Z\",\"body\":\"🤖 **AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T19:26:01.219Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813414655/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813496776\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813496776\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813496776,\"node_id\":\"IC_kwDOQ-Z-Ps7jTVfI\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:43:01Z\",\"updated_at\":\"2026-01-28T19:43:01Z\",\"body\":\"## 🔍 Diagnostic Logging Added\\n\\nI've added comprehensive logging to help diagnose the return traffic routing issue. The new logs will reveal exactly what's happening at the TUN device layer.\\n\\n### What's New in This Commit\\n\\n**Client-side TUN write logging (`tunnel.cpp`):**\\n```\\nTUN write: 60 bytes -> 10.8.0.2\\n```\\nThis shows when the client successfully writes a packet to the TUN device, along with the destination IP.\\n\\n**TUN device layer logging (`tun_device_*.cpp`):**\\n```\\nTunDevice::write: 60 bytes, IPv4 93.184.216.34 -> 10.8.0.2, IHL=5, proto=6, total_len=60\\nTunDevice::write: SUCCESS 60 bytes written/sent to Wintun\\n```\\nThis shows:\\n- Packet size\\n- Source and destination IPs\\n- IP Header Length (IHL)\\n- Protocol number (1=ICMP, 6=TCP, 17=UDP)\\n- Total length from IP header (helps detect truncation)\\n- Success/failure of the actual write operation\\n\\n### What to Look For in New Logs\\n\\nWhen you test again, please look for:\\n\\n1. **On the client (daemon logs):**\\n - `TunDevice::write: SUCCESS` messages - confirms packets reach Wintun\\n - The destination IPs should be `10.8.0.2` (your client's tunnel IP)\\n - Protocol numbers (6=TCP for web traffic)\\n\\n2. **On the server:**\\n - `TunDevice::write:` messages with more detail including IHL and protocol\\n - Any `failed to write` errors with specific reasons\\n\\n### Investigating the 50-byte \\\"Invalid argument\\\" Errors\\n\\nLooking at the previous server logs, I noticed 3 failures for 50-byte packets with \\\"Invalid argument\\\". The enhanced logging will now show:\\n- The exact IP addresses in those packets\\n- The IHL and protocol fields\\n- Whether the packets are malformed (wrong IP version, invalid header length, etc.)\\n\\n### Next Steps\\n\\n1. Please test with the new build from this PR\\n2. Share both daemon and server logs\\n3. Look for the `TunDevice::write` messages to understand what's happening\\n\\nThe logs should tell us exactly where the packets are getting lost in the chain:\\n- Server receives from internet ✓ (working based on previous logs)\\n- Server routes to client ✓ (working based on previous logs) \\n- Client receives and decrypts ✓ (working based on previous logs)\\n- **Client writes to TUN** ← NEW LOGGING HERE\\n- **TUN device accepts packet** ← NEW LOGGING HERE\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813496776/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813565018\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813565018\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813565018,\"node_id\":\"IC_kwDOQ-Z-Ps7jTmJa\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:55:37Z\",\"updated_at\":\"2026-01-28T19:55:37Z\",\"body\":\"## ✅ All CI Checks Passed\\n\\nAll CI workflows have passed for commit `0ca5efe`:\\n\\n- ✅ CI (Build and Test All)\\n- ✅ Unit Tests\\n- ✅ Integration Tests\\n- ✅ Security & Cryptography Tests\\n- ✅ Network Emulation Tests\\n- ✅ Connection Test\\n- ✅ Linux Build (ubuntu-22.04, ubuntu-24.04)\\n- ✅ Windows Build (x64)\\n\\n### Ready for Testing\\n\\nThe diagnostic logging has been added and verified. Please test with the new build and share the logs. The new logging will show exactly what's happening at the TUN write layer.\\n\\n**Key log patterns to look for:**\\n- `TunDevice::write: N bytes, IPv4 X.X.X.X -> Y.Y.Y.Y, IHL=5, proto=6, total_len=N`\\n- `TunDevice::write: SUCCESS N bytes written` or `sent to Wintun`\\n- `TUN write: N bytes -> X.X.X.X` (in tunnel.cpp)\\n\\nThis will help identify if:\\n1. Packets are reaching the TUN device layer\\n2. Packets are being successfully written\\n3. What IPs/protocols are being written\\n4. If any packets are malformed (wrong IP version, invalid header, etc.)\\n\\n---\\n*Working session continues to wait for testing results.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813565018/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813566672\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813566672\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813566672,\"node_id\":\"IC_kwDOQ-Z-Ps7jTmjQ\",\"user\":{\"login\":\"konard\",\"id\":1431904,\"node_id\":\"MDQ6VXNlcjE0MzE5MDQ=\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/1431904?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/konard\",\"html_url\":\"https://github.com/konard\",\"followers_url\":\"https://api.github.com/users/konard/followers\",\"following_url\":\"https://api.github.com/users/konard/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/konard/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/konard/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/konard/subscriptions\",\"organizations_url\":\"https://api.github.com/users/konard/orgs\",\"repos_url\":\"https://api.github.com/users/konard/repos\",\"events_url\":\"https://api.github.com/users/konard/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/konard/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T19:55:58Z\",\"updated_at\":\"2026-01-28T19:55:58Z\",\"body\":\"## 🤖 Solution Draft Log\\nThis log file contains the complete execution trace of the AI solution draft process.\\n\\n💰 **Cost estimation:**\\n- Public pricing estimate: $10.482819 USD\\n- Calculated by Anthropic: $7.159174 USD\\n- Difference: $-3.323645 (-31.71%)\\n📎 **Log file uploaded as Gist** (1803KB)\\n🔗 [View complete solution draft log](https://gist.githubusercontent.com/konard/880786881a4191f9820748b437a189dd/raw/b3a32a5dbfd89626f3c6d86e22eb8b9f940f6ada/solution-draft-log-pr-1769630153904.txt)\\n---\\n*Now working session is ended, feel free to review and add any feedback on the solution draft.*\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813566672/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null},{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813607021\",\"html_url\":\"https://github.com/VisageDvachevsky/veil-windows-client/pull/75#issuecomment-3813607021\",\"issue_url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/75\",\"id\":3813607021,\"node_id\":\"IC_kwDOQ-Z-Ps7jTwZt\",\"user\":{\"login\":\"VisageDvachevsky\",\"id\":82640121,\"node_id\":\"MDQ6VXNlcjgyNjQwMTIx\",\"avatar_url\":\"https://avatars.githubusercontent.com/u/82640121?v=4\",\"gravatar_id\":\"\",\"url\":\"https://api.github.com/users/VisageDvachevsky\",\"html_url\":\"https://github.com/VisageDvachevsky\",\"followers_url\":\"https://api.github.com/users/VisageDvachevsky/followers\",\"following_url\":\"https://api.github.com/users/VisageDvachevsky/following{/other_user}\",\"gists_url\":\"https://api.github.com/users/VisageDvachevsky/gists{/gist_id}\",\"starred_url\":\"https://api.github.com/users/VisageDvachevsky/starred{/owner}{/repo}\",\"subscriptions_url\":\"https://api.github.com/users/VisageDvachevsky/subscriptions\",\"organizations_url\":\"https://api.github.com/users/VisageDvachevsky/orgs\",\"repos_url\":\"https://api.github.com/users/VisageDvachevsky/repos\",\"events_url\":\"https://api.github.com/users/VisageDvachevsky/events{/privacy}\",\"received_events_url\":\"https://api.github.com/users/VisageDvachevsky/received_events\",\"type\":\"User\",\"user_view_type\":\"public\",\"site_admin\":false},\"created_at\":\"2026-01-28T20:02:10Z\",\"updated_at\":\"2026-01-28T20:02:10Z\",\"body\":\"логи daemon процесса https://gist.github.com/VisageDvachevsky/bd70667663cc630174c46edce357e56f\\r\\nи логи с сервера https://gist.github.com/VisageDvachevsky/4237eeced4e5f73ed151aeb0ea2fd5b3\\r\\n\\r\\nпродолжай разбираться в чем проблема и где мы теряем 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**AI Work Session Started**\\n\\nStarting automated work session at 2026-01-28T20:02:53.685Z\\n\\nThe PR has been converted to draft mode while work is in progress.\\n\\n_This comment marks the beginning of an AI work session. Please wait working session to finish, and provide your feedback._\",\"author_association\":\"CONTRIBUTOR\",\"reactions\":{\"url\":\"https://api.github.com/repos/VisageDvachevsky/veil-windows-client/issues/comments/3813612121/reactions\",\"total_count\":0,\"+1\":0,\"-1\":0,\"laugh\":0,\"hooray\":0,\"confused\":0,\"heart\":0,\"rocket\":0,\"eyes\":0},\"performed_via_github_app\":null}]","numLines":1,"startLine":1,"totalLines":1}}} | |
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| [2026-01-28T20:03:43.461Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01LeN1UcqEpxq9b5eczaeLzb","type":"tool_result","content":" 1→Windows PowerShell\n 2→(C) Корпорация Майкрософт (Microsoft Corporation). Все права защищены.\n 3→\n 4→Установите последнюю версию PowerShell для новых функций и улучшения! https://aka.ms/PSWindows\n 5→\n 6→PS C:\\WINDOWS\\system32> cd \"E:\\VEIL VPN\"\n 7→PS E:\\VEIL VPN> .\\veil-service.exe --debug\n 8→Running in debug mode (press Ctrl+C to stop)...\n 9→2026-01-28 22:57:24.023 [info] ========================================\n 10→2026-01-28 22:57:24.025 [info] VEIL VPN SERVICE STARTING\n 11→2026-01-28 22:57:24.025 [info] ========================================\n 12→2026-01-28 22:57:24.026 [info] IPC server started on \\\\.\\pipe\\veil-client\n 13→2026-01-28 22:57:24.026 [info] IPC server started successfully\n 14→2026-01-28 22:57:24.026 [info] Listening on named pipe: \\\\.\\pipe\\veil-client\n 15→2026-01-28 22:57:24.026 [info] Service is now running\n 16→2026-01-28 22:57:24.026 [info] ========================================\n 17→2026-01-28 22:57:24.026 [info] VEIL VPN SERVICE RUNNING\n 18→2026-01-28 22:57:24.026 [info] ========================================\n 19→2026-01-28 22:57:24.026 [info] Service is now accepting IPC connections\n 20→2026-01-28 22:57:24.026 [info] VPN tunnel functionality is available\n 21→[IPC Server Debug] Data available on client 0: 64 bytes\n 22→[IPC Server Debug] Read 64 bytes from client 0\n 23→[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 24→\n 25→[IPC Server Debug] receive_buffer size: 64, contains newline: YES\n 26→[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 27→[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 28→[IPC Debug] Payload: {\"command_type\":\"get_diagnostics\"}\n 29→[IPC Server Debug] Deserialization result: SUCCESS\n 30→[IPC Server Debug] message_handler_ is set: YES\n 31→[IPC Server Debug] Calling message_handler_\n 32→[IPC Debug] serialize_message: msg.type=2, payload.index=2\n 33→[IPC Debug] Payload holds Command=0, Event=0, Response=1\n 34→[IPC Debug] Serializing as Response\n 35→[IPC Debug] serialize_response: resp.index=2\n 36→[IPC Debug] Serializing DiagnosticsResponse\n 37→[IPC Debug] serialize_response result: {\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"}\n 38→[IPC Debug] Serialized message: {\"payload\":{\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"},\"type\":\"response\"}\n 39→[IPC Server Debug] message_handler_ returned\n 40→[IPC Server Debug] Data available on client 0: 64 bytes\n 41→[IPC Server Debug] Read 64 bytes from client 0\n 42→[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 43→\n 44→[IPC Server Debug] receive_buffer size: 64, contains newline: YES\n 45→[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 46→[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 47→[IPC Debug] Payload: {\"command_type\":\"get_diagnostics\"}\n 48→[IPC Server Debug] Deserialization result: SUCCESS\n 49→[IPC Server Debug] message_handler_ is set: YES\n 50→[IPC Server Debug] Calling message_handler_\n 51→[IPC Debug] serialize_message: msg.type=2, payload.index=2\n 52→[IPC Debug] Payload holds Command=0, Event=0, Response=1\n 53→[IPC Debug] Serializing as Response\n 54→[IPC Debug] serialize_response: resp.index=2\n 55→[IPC Debug] Serializing DiagnosticsResponse\n 56→[IPC Debug] serialize_response result: {\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"}\n 57→[IPC Debug] Serialized message: {\"payload\":{\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"},\"type\":\"response\"}\n 58→[IPC Server Debug] message_handler_ returned\n 59→[IPC Server Debug] Data available on client 0: 448 bytes\n 60→[IPC Server Debug] Read 448 bytes from client 0\n 61→[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}},\"type\":\"command\"}\n 62→\n 63→[IPC Server Debug] receive_buffer size: 448, contains newline: YES\n 64→[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}},\"type\":\"command\"}\n 65→[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}},\"type\":\"command\"}\n 66→[IPC Debug] Payload: {\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}}\n 67→[IPC Server Debug] Deserialization result: SUCCESS\n 68→[IPC Server Debug] message_handler_ is set: YES\n 69→[IPC Server Debug] Calling message_handler_\n 70→2026-01-28 22:57:39.423 [info] Initializing new VPN connection...\n 71→2026-01-28 22:57:39.423 [info] Connecting to 91.132.224.119:4433\n 72→2026-01-28 22:57:39.423 [info] Initializing tunnel...\n 73→2026-01-28 22:57:39.425 [info] [UDP] Socket bound successfully to 0.0.0.0:60617\n 74→2026-01-28 22:57:39.425 [info] [UDP] Socket local address: 0.0.0.0:60617\n 75→2026-01-28 22:57:39.426 [info] UDP socket opened on random port 60617 (requested port 0)\n 76→2026-01-28 22:57:39.426 [info] Tunnel initialized successfully\n 77→2026-01-28 22:57:39.426 [info] Tunnel initialized successfully\n 78→2026-01-28 22:57:39.426 [info] UDP socket bound to local port 60617\n 79→2026-01-28 22:57:39.508 [info] Adding Windows Firewall rule for UDP port 60617\n 80→ОК.\n 81→\n 82→2026-01-28 22:57:39.577 [info] Firewall rule 'VEIL_VPN_UDP_60617' created successfully\n 83→2026-01-28 22:57:39.577 [info] ========================================\n 84→2026-01-28 22:57:39.577 [info] VPN CONNECTION ESTABLISHED\n 85→2026-01-28 22:57:39.577 [info] ========================================\n 86→2026-01-28 22:57:39.577 [[IPC Debug] serialize_message: msg.type=info1] ========================================\n 87→2026-01-28 22:57:39.578 [, payload.index=1info\n 88→] VPN TUNNEL THREAD STARTED\n 89→[IPC Debug] Payload holds Command=2026-01-28 22:57:39.578 [0, Event=info1] ========================================\n 90→2026-01-28 22:57:39.578 [, Response=0info\n 91→[IPC Debug] Serializing as Event] Running tunnel event loop...\n 92→\n 93→2026-01-28 22:57:39.578 [[IPC Debug] Serialized message: {\"payload\":{\"event_type\":\"connection_state_change\",\"message\":\"Connected to 91.132.224.119\",\"new_state\":\"connected\",\"old_state\":\"disconnected\"},\"type\":\"event\"}\n 94→info[IPC Debug] serialize_message: msg.type=] Tunnel starting...\n 95→22026-01-28 22:57:39.579 [, payload.index=2\n 96→[IPC Debug] Payload holds Command=info0, Event=0, Response=1\n 97→[IPC Debug] Serializing as Response\n 98→[IPC Debug] serialize_response: resp.index=] Connection state: 0 -> 1\n 99→2026-01-28 22:57:39.580 [4\n 100→info[IPC Debug] Serializing SuccessResponse: message=Connected successfully\n 101→] Tunnel state changed: 0 -> 1\n 102→[IPC Debug] serialize_response result: {\"message\":\"Connected successfully\",\"response_type\":\"success\"}\n 103→[IPC Debug] Serialized message: {\"payload\":{\"message\":\"Connected successfully\",\"response_type\":\"success\"},\"type\":\"response\"}\n 104→[IPC Server Debug] message_handler_ returned2026-01-28 22:57:39.581 [\n 105→info] [UDP] Best interface for 91.132.224.119:4433 is index 19\n 106→2026-01-28 22:57:39.585 [info] [UDP] Found IP 192.168.0.102 for interface index 19\n 107→2026-01-28 22:57:39.586 [info] [UDP] Socket rebound to 192.168.0.102:60617 (interface index 19)\n 108→2026-01-28 22:57:39.586 [info] [UDP] UDP socket connected to 91.132.224.119:4433\n 109→2026-01-28 22:57:39.586 [info] [UDP] Local address after connect: 192.168.0.102:60617\n 110→2026-01-28 22:57:39.586 [info] Connection state: 1 -> 2\n 111→2026-01-28 22:57:39.586 [info] Tunnel state changed: 1 -> 2\n 112→2026-01-28 22:57:39.586 [info] Performing handshake with 91.132.224.119:4433\n 113→2026-01-28 22:57:39.587 [info] ========================================\n 114→2026-01-28 22:57:39.587 [info] HANDSHAKE: Generated INIT message\n 115→2026-01-28 22:57:39.587 [info] Size: 477 bytes\n 116→2026-01-28 22:57:39.587 [info] Target: 91.132.224.119:4433\n 117→2026-01-28 22:57:39.587 [info] ========================================\n 118→2026-01-28 22:57:39.587 [info] [UDP] Sending 477 bytes to 91.132.224.119:4433\n 119→2026-01-28 22:57:39.588 [info] [UDP] Successfully sent 477 bytes to 91.132.224.119:4433\n 120→2026-01-28 22:57:39.588 [info] HANDSHAKE: INIT sent successfully, waiting for RESPONSE...\n 121→2026-01-28 22:57:39.693 [info] [UDP] Received 264 bytes from 91.132.224.119:4433\n 122→2026-01-28 22:57:39.694 [info] HANDSHAKE: Received packet from 91.132.224.119:4433, size: 264 bytes\n 123→2026-01-28 22:57:39.694 [info] TransportSession created: session_id=11598378240004569761\n 124→2026-01-28 22:57:39.695 [info] send_key_fp=4caa4770, send_nonce_fp=d90c12d6\n 125→2026-01-28 22:57:39.695 [info] recv_key_fp=c3d53afa, recv_nonce_fp=19f54ee0\n 126→2026-01-28 22:57:39.695 [info] send_seq_obfuscation_key_fp=40193c80, recv_seq_obfuscation_key_fp=e25c8a4c\n 127→2026-01-28 22:57:39.695 [info] Handshake completed successfully, session ID: 11598378240004569761\n 128→2026-01-28 22:57:39.695 [info] Creating TUN device after successful handshake...\n 129→2026-01-28 22:57:39.739 [info] Wintun DLL loaded, driver version: 0\n 130→2026-01-28 22:57:39.976 [info] Created Wintun adapter: veil0\n 131→2026-01-28 22:57:39.979 [info] Set IP address 10.8.0.2/24 on veil0\n 132→2026-01-28 22:57:39.980 [info] Set MTU 1400 on veil0\n 133→2026-01-28 22:57:39.985 [info] Wintun session started successfully\n 134→2026-01-28 22:57:40.001 [info] TUN device veil0 opened with IP 10.8.0.2\n 135→2026-01-28 22:57:40.012 [info] Connection state: 2 -> 3\n 136→2026-01-28 22:57:40.016 [info] Tunnel state changed: 2 -> 3\n 137→2026-01-28 22:57:40.016 [info] ========================================\n 138→2026-01-28 22:57:40.016 [info] CONFIGURING ROUTES\n 139→2026-01-28 22:57:40.042 [info] ========================================\n 140→2026-01-28 22:57:40.042 [info] TUN device: veil0\n 141→2026-01-28 22:57:40.044 [info] Route all traffic: true\n 142→2026-01-28 22:57:40.045 [info] Setting up default route via VPN...\n 143→2026-01-28 22:57:40.046 [info] Current default gateway: 192.168.0.1 via Ethernet\n 144→2026-01-28 22:57:40.055 [info] Added route: 91.132.224.119/255.255.255.255 via 192.168.0.1 dev Ethernet metric 1\n 145→2026-01-28 22:57:40.055 [info] Added bypass route for VPN server 91.132.224.119 via 192.168.0.1 (metric 1)\n 146→2026-01-28 22:57:40.062 [info] Added route: 0.0.0.0/128.0.0.0 via (direct) dev veil0 metric 5\n 147→2026-01-28 22:57:40.071 [info] Added route: 128.0.0.0/128.0.0.0 via (direct) dev veil0 metric 5\n 148→2026-01-28 22:57:40.071 [info] Default route configured via veil0 with metric 5\n 149→2026-01-28 22:57:40.071 [info] ========================================\n 150→2026-01-28 22:57:40.071 [info] ROUTE CONFIGURATION COMPLETE\n 151→2026-01-28 22:57:40.072 [info] ========================================\n 152→2026-01-28 22:57:40.072 [warning] RetransmitBuffer::insert: seq=0, size=317, pending_count=0\n 153→2026-01-28 22:57:40.072 [info] [UDP] Sending 317 bytes to 91.132.224.119:4433\n 154→2026-01-28 22:57:40.072 [info] [UDP] Successfully sent 317 bytes to 91.132.224.119:4433\n 155→2026-01-28 22:57:40.096 [warning] RetransmitBuffer::insert: seq=1, size=114, pending_count=1\n 156→2026-01-28 22:57:40.097 [info] [UDP] Sending 114 bytes to 91.132.224.119:4433\n 157→2026-01-28 22:57:40.098 [info] [UDP] Successfully sent 114 bytes to 91.132.224.119:4433\n 158→2026-01-28 22:57:40.111 [warning] RetransmitBuffer::insert: seq=2, size=104, pending_count=2\n 159→2026-01-28 22:57:40.112 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 160→2026-01-28 22:57:40.113 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 161→2026-01-28 22:57:40.158 [warning] RetransmitBuffer::insert: seq=3, size=108, pending_count=3\n 162→2026-01-28 22:57:40.159 [info] [UDP] Sending 108 bytes to 91.132.224.119:4433\n 163→2026-01-28 22:57:40.159 [info] [UDP] Successfully sent 108 bytes to 91.132.224.119:4433\n 164→2026-01-28 22:57:40.174 [info] [UDP] Sending 317 bytes to 91.132.224.119:4433\n 165→2026-01-28 22:57:40.175 [info] [UDP] Successfully sent 317 bytes to 91.132.224.119:4433\n 166→2026-01-28 22:57:40.176 [warning] RetransmitBuffer::insert: seq=4, size=92, pending_count=4\n 167→2026-01-28 22:57:40.176 [info] [UDP] Sending 92 bytes to 91.132.224.119:4433\n 168→2026-01-28 22:57:40.176 [info] [UDP] Successfully sent 92 bytes to 91.132.224.119:4433\n 169→2026-01-28 22:57:40.176 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 170→2026-01-28 22:57:40.176 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x310e44ab12148745, deobfuscated_seq=0\n 171→2026-01-28 22:57:40.176 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=310e44ab12148745\n 172→2026-01-28 22:57:40.176 [warning] Replay check passed, proceeding to decryption\n 173→2026-01-28 22:57:40.176 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=0, decrypted_size=21\n 174→2026-01-28 22:57:40.177 [warning] Frame decoded: kind=2, payload_size=0\n 175→2026-01-28 22:57:40.177 [warning] process_ack called: stream_id=0, ack=0, bitmap=0x00000000, pending_before=5\n 176→2026-01-28 22:57:40.177 [warning] acknowledge_cumulative: ack_seq=0, pending_count=5, pending_range=[0, 4]\n 177→2026-01-28 22:57:40.177 [warning] Acknowledging packet seq=0\n 178→2026-01-28 22:57:40.177 [warning] acknowledge_cumulative done: acked=1 packets\n 179→2026-01-28 22:57:40.177 [warning] process_ack done: pending_after=4\n 180→2026-01-28 22:57:40.177 [warning] RetransmitBuffer::insert: seq=5, size=120, pending_count=4\n 181→2026-01-28 22:57:40.177 [info] [UDP] Sending 120 bytes to 91.132.224.119:4433\n 182→2026-01-28 22:57:40.178 [info] [UDP] Successfully sent 120 bytes to 91.132.224.119:4433\n 183→2026-01-28 22:57:40.200 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 184→2026-01-28 22:57:40.200 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x2e6423fae41874ca, deobfuscated_seq=1\n 185→2026-01-28 22:57:40.200 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=2e6423fae41874ca\n 186→2026-01-28 22:57:40.200 [warning] Replay check passed, proceeding to decryption\n 187→2026-01-28 22:57:40.201 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=1, decrypted_size=21\n 188→2026-01-28 22:57:40.201 [warning] Frame decoded: kind=2, payload_size=0\n 189→2026-01-28 22:57:40.201 [warning] process_ack called: stream_id=0, ack=1, bitmap=0x00000000, pending_before=5\n 190→2026-01-28 22:57:40.201 [warning] acknowledge_cumulative: ack_seq=1, pending_count=5, pending_range=[1, 5]\n 191→2026-01-28 22:57:40.201 [warning] Acknowledging packet seq=1\n 192→2026-01-28 22:57:40.201 [warning] acknowledge_cumulative done: acked=1 packets\n 193→2026-01-28 22:57:40.201 [warning] process_ack done: pending_after=4\n 194→2026-01-28 22:57:40.215 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 195→2026-01-28 22:57:40.215 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xa2d66203dc801863, deobfuscated_seq=2\n 196→2026-01-28 22:57:40.215 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=a2d66203dc801863\n 197→2026-01-28 22:57:40.215 [warning] Replay check passed, proceeding to decryption\n 198→2026-01-28 22:57:40.216 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=2, decrypted_size=21\n 199→2026-01-28 22:57:40.216 [warning] Frame decoded: kind=2, payload_size=0\n 200→2026-01-28 22:57:40.216 [warning] process_ack called: stream_id=0, ack=2, bitmap=0x00000000, pending_before=4\n 201→2026-01-28 22:57:40.216 [warning] acknowledge_cumulative: ack_seq=2, pending_count=4, pending_range=[2, 5]\n 202→2026-01-28 22:57:40.216 [warning] Acknowledging packet seq=2\n 203→2026-01-28 22:57:40.216 [warning] acknowledge_cumulative done: acked=1 packets\n 204→2026-01-28 22:57:40.217 [warning] process_ack done: pending_after=3\n 205→2026-01-28 22:57:40.245 [info] [UDP] Received 104 bytes from 91.132.224.119:4433\n 206→2026-01-28 22:57:40.246 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x8b88c57c3010b00f, deobfuscated_seq=3\n 207→2026-01-28 22:57:40.246 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=8b88c57c3010b00f\n 208→2026-01-28 22:57:40.246 [warning] Replay check passed, proceeding to decryption\n 209→2026-01-28 22:57:40.246 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=3, decrypted_size=80\n 210→2026-01-28 22:57:40.246 [warning] Frame decoded: kind=1, payload_size=60\n 211→2026-01-28 22:57:40.246 [warning] TunDevice::write: 60 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=60\n 212→2026-01-28 22:57:40.247 [warning] TunDevice::write: SUCCESS 60 bytes sent to Wintun\n 213→2026-01-28 22:57:40.247 [warning] TUN write: 60 bytes -> 10.8.0.2\n 214→2026-01-28 22:57:40.247 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n 215→2026-01-28 22:57:40.247 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n 216→2026-01-28 22:57:40.247 [warning] RetransmitBuffer::insert: seq=7, size=96, pending_count=3\n 217→2026-01-28 22:57:40.247 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n 218→2026-01-28 22:57:40.248 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n 219→2026-01-28 22:57:40.260 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 220→2026-01-28 22:57:40.260 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xcb719861080e8e18, deobfuscated_seq=4\n 221→2026-01-28 22:57:40.260 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=cb719861080e8e18\n 222→2026-01-28 22:57:40.260 [warning] Replay check passed, proceeding to decryption\n 223→2026-01-28 22:57:40.260 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=4, decrypted_size=21\n 224→2026-01-28 22:57:40.260 [warning] Frame decoded: kind=2, payload_size=0\n 225→2026-01-28 22:57:40.261 [warning] process_ack called: stream_id=0, ack=3, bitmap=0x00000000, pending_before=4\n 226→2026-01-28 22:57:40.261 [warning] acknowledge_cumulative: ack_seq=3, pending_count=4, pending_range=[3, 7]\n 227→2026-01-28 22:57:40.261 [warning] Acknowledging packet seq=3\n 228→2026-01-28 22:57:40.261 [warning] acknowledge_cumulative done: acked=1 packets\n 229→2026-01-28 22:57:40.261 [warning] process_ack done: pending_after=3\n 230→[IPC Server Debug] Data available on client 0: 64 bytes\n 231→[IPC Server Debug] Read 64 bytes from client 0\n 232→[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 233→\n 234→[IPC Server Debug] receive_buffer size: 64, contains newline: YES\n 235→[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 236→[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n 237→[IPC Debug] Payload: {\"command_type\":\"get_diagnostics\"}\n 238→[IPC Server Debug] Deserialization result: SUCCESS\n 239→[IPC Server Debug] message_handler_ is set: YES\n 240→[IPC Server Debug] Calling message_handler_\n 241→[IPC Debug] serialize_message: msg.type=2, payload.index=2\n 242→[IPC Debug] Payload holds Command=0, Event=0, Response=1\n 243→[IPC Debug] Serializing as Response\n 244→[IPC Debug] serialize_response: resp.index=2\n 245→[IPC Debug] Serializing DiagnosticsResponse\n 246→[IPC Debug] serialize_response result: {\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":5,\"packets_retransmitted\":0,\"packets_sent\":7,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"}\n 247→[IPC Debug] Serialized message: {\"payload\":{\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":5,\"packets_retransmitted\":0,\"packets_sent\":7,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"},\"type\":\"response\"}\n 248→[IPC Server Debug] message_handler_ returned\n 249→2026-01-28 22:57:40.275 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 250→2026-01-28 22:57:40.275 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4ccfeedc9bdd9180, deobfuscated_seq=5\n 251→2026-01-28 22:57:40.275 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=4ccfeedc9bdd9180\n 252→2026-01-28 22:57:40.276 [warning] Replay check passed, proceeding to decryption\n 253→2026-01-28 22:57:40.276 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=5, decrypted_size=21\n 254→2026-01-28 22:57:40.276 [warning] Frame decoded: kind=2, payload_size=0\n 255→2026-01-28 22:57:40.276 [warning] process_ack called: stream_id=0, ack=4, bitmap=0x00000000, pending_before=3\n 256→2026-01-28 22:57:40.276 [warning] acknowledge_cumulative: ack_seq=4, pending_count=3, pending_range=[4, 7]\n 257→2026-01-28 22:57:40.276 [warning] Acknowledging packet seq=4\n 258→2026-01-28 22:57:40.276 [warning] acknowledge_cumulative done: acked=1 packets\n 259→2026-01-28 22:57:40.276 [warning] process_ack done: pending_after=2\n 260→2026-01-28 22:57:40.277 [warning] RetransmitBuffer::insert: seq=8, size=104, pending_count=2\n 261→2026-01-28 22:57:40.277 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 262→2026-01-28 22:57:40.277 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 263→2026-01-28 22:57:40.277 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 264→2026-01-28 22:57:40.277 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xa3243e4d3f8b6a29, deobfuscated_seq=6\n 265→2026-01-28 22:57:40.277 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=a3243e4d3f8b6a29\n 266→2026-01-28 22:57:40.277 [warning] Replay check passed, proceeding to decryption\n 267→2026-01-28 22:57:40.278 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=6, decrypted_size=21\n 268→2026-01-28 22:57:40.278 [warning] Frame decoded: kind=2, payload_size=0\n 269→2026-01-28 22:57:40.278 [warning] process_ack called: stream_id=0, ack=5, bitmap=0x00000000, pending_before=3\n 270→2026-01-28 22:57:40.278 [warning] acknowledge_cumulative: ack_seq=5, pending_count=3, pending_range=[5, 8]\n 271→2026-01-28 22:57:40.278 [warning] Acknowledging packet seq=5\n 272→2026-01-28 22:57:40.278 [warning] acknowledge_cumulative done: acked=1 packets\n 273→2026-01-28 22:57:40.278 [warning] process_ack done: pending_after=2\n 274→2026-01-28 | |
| [2026-01-28T20:03:43.467Z] [INFO] 22:57:40.349 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 275→2026-01-28 22:57:40.350 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x64925b03ac7f794f, deobfuscated_seq=7\n 276→2026-01-28 22:57:40.350 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=64925b03ac7f794f\n 277→2026-01-28 22:57:40.350 [warning] Replay check passed, proceeding to decryption\n 278→2026-01-28 22:57:40.350 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=7, decrypted_size=21\n 279→2026-01-28 22:57:40.350 [warning] Frame decoded: kind=2, payload_size=0\n 280→2026-01-28 22:57:40.351 [warning] process_ack called: stream_id=0, ack=7, bitmap=0x00000000, pending_before=2\n 281→2026-01-28 22:57:40.351 [warning] acknowledge_cumulative: ack_seq=7, pending_count=2, pending_range=[7, 8]\n 282→2026-01-28 22:57:40.351 [warning] Acknowledging packet seq=7\n 283→2026-01-28 22:57:40.351 [warning] acknowledge_cumulative done: acked=1 packets\n 284→2026-01-28 22:57:40.351 [warning] process_ack done: pending_after=1\n 285→2026-01-28 22:57:40.351 [warning] RetransmitBuffer::insert: seq=9, size=84, pending_count=1\n 286→2026-01-28 22:57:40.351 [info] [UDP] Sending 84 bytes to 91.132.224.119:4433\n 287→2026-01-28 22:57:40.352 [info] [UDP] Successfully sent 84 bytes to 91.132.224.119:4433\n 288→2026-01-28 22:57:40.377 [warning] RetransmitBuffer::insert: seq=10, size=613, pending_count=2\n 289→2026-01-28 22:57:40.377 [info] [UDP] Sending 613 bytes to 91.132.224.119:4433\n 290→2026-01-28 22:57:40.377 [info] [UDP] Successfully sent 613 bytes to 91.132.224.119:4433\n 291→2026-01-28 22:57:40.379 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 292→2026-01-28 22:57:40.379 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x1415fe78e2d70f35, deobfuscated_seq=8\n 293→2026-01-28 22:57:40.380 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=1415fe78e2d70f35\n 294→2026-01-28 22:57:40.380 [warning] Replay check passed, proceeding to decryption\n 295→2026-01-28 22:57:40.380 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=8, decrypted_size=21\n 296→2026-01-28 22:57:40.380 [warning] Frame decoded: kind=2, payload_size=0\n 297→2026-01-28 22:57:40.380 [warning] process_ack called: stream_id=0, ack=8, bitmap=0x00000000, pending_before=3\n 298→2026-01-28 22:57:40.380 [warning] acknowledge_cumulative: ack_seq=8, pending_count=3, pending_range=[8, 10]\n 299→2026-01-28 22:57:40.381 [warning] Acknowledging packet seq=8\n 300→2026-01-28 22:57:40.381 [warning] acknowledge_cumulative done: acked=1 packets\n 301→2026-01-28 22:57:40.381 [warning] process_ack done: pending_after=2\n 302→2026-01-28 22:57:40.391 [info] [UDP] Received 104 bytes from 91.132.224.119:4433\n 303→2026-01-28 22:57:40.391 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x5ad76ea592243223, deobfuscated_seq=9\n 304→2026-01-28 22:57:40.391 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=5ad76ea592243223\n 305→2026-01-28 22:57:40.391 [warning] Replay check passed, proceeding to decryption\n 306→2026-01-28 22:57:40.391 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=9, decrypted_size=80\n 307→2026-01-28 22:57:40.392 [warning] Frame decoded: kind=1, payload_size=60\n 308→2026-01-28 22:57:40.392 [warning] TunDevice::write: 60 bytes, IPv4 140.82.121.5 -> 10.8.0.2, IHL=5, proto=6, total_len=60\n 309→2026-01-28 22:57:40.392 [warning] TunDevice::write: SUCCESS 60 bytes sent to Wintun\n 310→2026-01-28 22:57:40.392 [warning] TUN write: 60 bytes -> 10.8.0.2\n 311→2026-01-28 22:57:40.392 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n 312→2026-01-28 22:57:40.392 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n 313→2026-01-28 22:57:40.393 [warning] RetransmitBuffer::insert: seq=12, size=96, pending_count=2\n 314→2026-01-28 22:57:40.396 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n 315→2026-01-28 22:57:40.397 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n 316→2026-01-28 22:57:40.409 [warning] RetransmitBuffer::insert: seq=13, size=104, pending_count=3\n 317→2026-01-28 22:57:40.410 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 318→2026-01-28 22:57:40.410 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 319→2026-01-28 22:57:40.424 [warning] RetransmitBuffer::insert: seq=14, size=104, pending_count=4\n 320→2026-01-28 22:57:40.427 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 321→2026-01-28 22:57:40.428 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 322→2026-01-28 22:57:40.440 [warning] RetransmitBuffer::insert: seq=15, size=1394, pending_count=5\n 323→2026-01-28 22:57:40.442 [warning] RetransmitBuffer::insert: seq=16, size=94, pending_count=6\n 324→2026-01-28 22:57:40.442 [info] [UDP] Sending 1394 bytes to 91.132.224.119:4433\n 325→2026-01-28 22:57:40.442 [info] [UDP] Successfully sent 1394 bytes to 91.132.224.119:4433\n 326→2026-01-28 22:57:40.442 [info] [UDP] Sending 94 bytes to 91.132.224.119:4433\n 327→2026-01-28 22:57:40.442 [info] [UDP] Successfully sent 94 bytes to 91.132.224.119:4433\n 328→2026-01-28 22:57:40.454 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 329→2026-01-28 22:57:40.454 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x84c64c9cd549af32, deobfuscated_seq=10\n 330→2026-01-28 22:57:40.454 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=84c64c9cd549af32\n 331→2026-01-28 22:57:40.455 [warning] Replay check passed, proceeding to decryption\n 332→2026-01-28 22:57:40.455 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=10, decrypted_size=21\n 333→2026-01-28 22:57:40.455 [warning] Frame decoded: kind=2, payload_size=0\n 334→2026-01-28 22:57:40.455 [warning] process_ack called: stream_id=0, ack=9, bitmap=0x00000000, pending_before=7\n 335→2026-01-28 22:57:40.455 [warning] acknowledge_cumulative: ack_seq=9, pending_count=7, pending_range=[9, 16]\n 336→2026-01-28 22:57:40.455 [warning] Acknowledging packet seq=9\n 337→2026-01-28 22:57:40.456 [warning] acknowledge_cumulative done: acked=1 packets\n 338→2026-01-28 22:57:40.456 [warning] process_ack done: pending_after=6\n 339→2026-01-28 22:57:40.456 [warning] RetransmitBuffer::insert: seq=17, size=367, pending_count=6\n 340→2026-01-28 22:57:40.459 [info] [UDP] Sending 367 bytes to 91.132.224.119:4433\n 341→2026-01-28 22:57:40.459 [info] [UDP] Successfully sent 367 bytes to 91.132.224.119:4433\n 342→2026-01-28 22:57:40.471 [warning] RetransmitBuffer::insert: seq=18, size=104, pending_count=7\n 343→2026-01-28 22:57:40.472 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 344→2026-01-28 22:57:40.473 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 345→2026-01-28 22:57:40.481 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 346→2026-01-28 22:57:40.481 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xff202a32331b3386, deobfuscated_seq=11\n 347→2026-01-28 22:57:40.481 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=ff202a32331b3386\n 348→2026-01-28 22:57:40.481 [warning] Replay check passed, proceeding to decryption\n 349→2026-01-28 22:57:40.481 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=11, decrypted_size=21\n 350→2026-01-28 22:57:40.482 [warning] Frame decoded: kind=2, payload_size=0\n 351→2026-01-28 22:57:40.482 [warning] process_ack called: stream_id=0, ack=10, bitmap=0x00000000, pending_before=8\n 352→2026-01-28 22:57:40.482 [warning] acknowledge_cumulative: ack_seq=10, pending_count=8, pending_range=[10, 18]\n 353→2026-01-28 22:57:40.482 [warning] Acknowledging packet seq=10\n 354→2026-01-28 22:57:40.482 [warning] acknowledge_cumulative done: acked=1 packets\n 355→2026-01-28 22:57:40.482 [warning] process_ack done: pending_after=7\n 356→2026-01-28 22:57:40.482 [warning] RetransmitBuffer::insert: seq=19, size=104, pending_count=7\n 357→2026-01-28 22:57:40.483 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 358→2026-01-28 22:57:40.483 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 359→2026-01-28 22:57:40.499 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 360→2026-01-28 22:57:40.500 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xd299d42c02ead413, deobfuscated_seq=12\n 361→2026-01-28 22:57:40.500 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=d299d42c02ead413\n 362→2026-01-28 22:57:40.500 [warning] Replay check passed, proceeding to decryption\n 363→2026-01-28 22:57:40.500 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=12, decrypted_size=21\n 364→2026-01-28 22:57:40.500 [warning] Frame decoded: kind=2, payload_size=0\n 365→2026-01-28 22:57:40.500 [warning] process_ack called: stream_id=0, ack=12, bitmap=0x00000000, pending_before=8\n 366→2026-01-28 22:57:40.501 [warning] acknowledge_cumulative: ack_seq=12, pending_count=8, pending_range=[12, 19]\n 367→2026-01-28 22:57:40.501 [warning] Acknowledging packet seq=12\n 368→2026-01-28 22:57:40.501 [warning] acknowledge_cumulative done: acked=1 packets\n 369→2026-01-28 22:57:40.501 [warning] process_ack done: pending_after=7\n 370→2026-01-28 22:57:40.501 [warning] RetransmitBuffer::insert: seq=20, size=104, pending_count=7\n 371→2026-01-28 22:57:40.501 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n 372→2026-01-28 22:57:40.502 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n 373→2026-01-28 22:57:40.510 [info] [UDP] Received 96 bytes from 91.132.224.119:4433\n 374→2026-01-28 22:57:40.510 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0x78623e2037c68ef0, deobfuscated_seq=13\n 375→2026-01-28 22:57:40.510 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=78623e2037c68ef0\n 376→2026-01-28 22:57:40.511 [warning] Replay check passed, proceeding to decryption\n 377→2026-01-28 22:57:40.511 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=13, decrypted_size=72\n 378→2026-01-28 22:57:40.511 [warning] Frame decoded: kind=1, payload_size=52\n 379→2026-01-28 22:57:40.511 [warning] TunDevice::write: 52 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=52\n 380→2026-01-28 22:57:40.511 [warning] TunDevice::write: SUCCESS 52 bytes sent to Wintun\n 381→2026-01-28 22:57:40.511 [warning] TUN write: 52 bytes -> 10.8.0.2\n 382→2026-01-28 22:57:40.512 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n 383→2026-01-28 22:57:40.512 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n 384→2026-01-28 22:57:40.513 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 385→2026-01-28 22:57:40.513 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x44ecd8af1e3acdf0, deobfuscated_seq=14\n 386→2026-01-28 22:57:40.514 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=44ecd8af1e3acdf0\n 387→2026-01-28 22:57:40.514 [warning] Replay check passed, proceeding to decryption\n 388→2026-01-28 22:57:40.514 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=14, decrypted_size=21\n 389→2026-01-28 22:57:40.514 [warning] Frame decoded: kind=2, payload_size=0\n 390→2026-01-28 22:57:40.514 [warning] process_ack called: stream_id=0, ack=13, bitmap=0x00000000, pending_before=8\n 391→2026-01-28 22:57:40.514 [warning] acknowledge_cumulative: ack_seq=13, pending_count=8, pending_range=[13, 20]\n 392→2026-01-28 22:57:40.514 [warning] Acknowledging packet seq=13\n 393→2026-01-28 22:57:40.514 [warning] acknowledge_cumulative done: acked=1 packets\n 394→2026-01-28 22:57:40.515 [warning] process_ack done: pending_after=7\n 395→2026-01-28 22:57:40.515 [info] [UDP] Received 189 bytes from 91.132.224.119:4433\n 396→2026-01-28 22:57:40.515 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=189, obfuscated_seq=0xb8b2fd9f21c67af7, deobfuscated_seq=15\n 397→2026-01-28 22:57:40.515 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=b8b2fd9f21c67af7\n 398→2026-01-28 22:57:40.515 [warning] Replay check passed, proceeding to decryption\n 399→2026-01-28 22:57:40.515 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=15, decrypted_size=165\n 400→2026-01-28 22:57:40.515 [warning] Frame decoded: kind=1, payload_size=145\n 401→2026-01-28 22:57:40.516 [warning] TunDevice::write: 145 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=145\n 402→2026-01-28 22:57:40.516 [warning] TunDevice::write: SUCCESS 145 bytes sent to Wintun\n 403→2026-01-28 22:57:40.516 [warning] TUN write: 145 bytes -> 10.8.0.2\n 404→2026-01-28 22:57:40.516 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n 405→2026-01-28 22:57:40.516 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n 406→2026-01-28 22:57:40.523 [info] [UDP] Received 104 bytes from 91.132.224.119:4433\n 407→2026-01-28 22:57:40.524 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xc24fbc16705a6f6e, deobfuscated_seq=16\n 408→2026-01-28 22:57:40.524 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=c24fbc16705a6f6e\n 409→2026-01-28 22:57:40.524 [warning] Replay check passed, proceeding to decryption\n 410→2026-01-28 22:57:40.524 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=16, decrypted_size=80\n 411→2026-01-28 22:57:40.524 [warning] Frame decoded: kind=1, payload_size=60\n 412→2026-01-28 22:57:40.524 [warning] TunDevice::write: 60 bytes, IPv4 8.47.69.10 -> 10.8.0.2, IHL=5, proto=6, total_len=60\n 413→2026-01-28 22:57:40.524 [warning] TunDevice::write: SUCCESS 60 bytes sent to Wintun\n 414→2026-01-28 22:57:40.525 [warning] TUN write: 60 bytes -> 10.8.0.2\n 415→2026-01-28 22:57:40.525 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n 416→2026-01-28 22:57:40.525 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n 417→2026-01-28 22:57:40.525 [warning] RetransmitBuffer::insert: seq=24, size=96, pending_count=7\n 418→2026-01-28 22:57:40.525 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n 419→2026-01-28 22:57:40.526 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n 420→2026-01-28 22:57:40.530 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 421→2026-01-28 22:57:40.530 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xc21b5ee725117822, deobfuscated_seq=17\n 422→2026-01-28 22:57:40.530 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=c21b5ee725117822\n 423→2026-01-28 22:57:40.531 [warning] Replay check passed, proceeding to decryption\n 424→2026-01-28 22:57:40.531 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=17, decrypted_size=21\n 425→2026-01-28 22:57:40.531 [warning] Frame decoded: kind=2, payload_size=0\n 426→2026-01-28 22:57:40.531 [warning] process_ack called: stream_id=0, ack=14, bitmap=0x00000000, pending_before=8\n 427→2026-01-28 22:57:40.531 [warning] acknowledge_cumulative: ack_seq=14, pending_count=8, pending_range=[14, 24]\n 428→2026-01-28 22:57:40.531 [warning] Acknowledging packet seq=14\n 429→2026-01-28 22:57:40.532 [warning] acknowledge_cumulative done: acked=1 packets\n 430→2026-01-28 22:57:40.532 [warning] process_ack done: pending_after=7\n 431→2026-01-28 22:57:40.532 [warning] RetransmitBuffer::insert: seq=25, size=1394, pending_count=7\n 432→2026-01-28 22:57:40.535 [warning] RetransmitBuffer::insert: seq=26, size=94, pending_count=8\n 433→2026-01-28 22:57:40.535 [info] [UDP] Sending 1394 bytes to 91.132.224.119:4433\n 434→2026-01-28 22:57:40.535 [info] [UDP] Successfully sent 1394 bytes to 91.132.224.119:4433\n 435→2026-01-28 22:57:40.535 [info] [UDP] Sending 94 bytes to 91.132.224.119:4433\n 436→2026-01-28 22:57:40.535 [info] [UDP] Successfully sent 94 bytes to 91.132.224.119:4433\n 437→2026-01-28 22:57:40.545 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 438→2026-01-28 22:57:40.545 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xaac5b530e614b294, deobfuscated_seq=18\n 439→2026-01-28 22:57:40.545 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=aac5b530e614b294\n 440→2026-01-28 22:57:40.546 [warning] Replay check passed, proceeding to decryption\n 441→2026-01-28 22:57:40.546 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=18, decrypted_size=21\n 442→2026-01-28 22:57:40.546 [warning] Frame decoded: kind=2, payload_size=0\n 443→2026-01-28 22:57:40.546 [warning] process_ack called: stream_id=0, ack=15, bitmap=0x00000000, pending_before=9\n 444→2026-01-28 22:57:40.546 [warning] acknowledge_cumulative: ack_seq=15, pending_count=9, pending_range=[15, 26]\n 445→2026-01-28 22:57:40.546 [warning] Acknowledging packet seq=15\n 446→2026-01-28 22:57:40.546 [warning] acknowledge_cumulative done: acked=1 packets\n 447→2026-01-28 22:57:40.547 [warning] process_ack done: pending_after=8\n 448→2026-01-28 22:57:40.547 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 449→2026-01-28 22:57:40.547 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x818b8825c8e20b16, deobfuscated_seq=19\n 450→2026-01-28 22:57:40.547 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=818b8825c8e20b16\n 451→2026-01-28 22:57:40.549 [warning] Replay check passed, proceeding to decryption\n 452→2026-01-28 22:57:40.549 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=19, decrypted_size=21\n 453→2026-01-28 22:57:40.550 [warning] Frame decoded: kind=2, payload_size=0\n 454→2026-01-28 22:57:40.550 [warning] process_ack called: stream_id=0, ack=16, bitmap=0x00000000, pending_before=8\n 455→2026-01-28 22:57:40.550 [warning] acknowledge_cumulative: ack_seq=16, pending_count=8, pending_range=[16, 26]\n 456→2026-01-28 22:57:40.550 [warning] Acknowledging packet seq=16\n 457→2026-01-28 22:57:40.550 [warning] acknowledge_cumulative done: acked=1 packets\n 458→2026-01-28 22:57:40.550 [warning] process_ack done: pending_after=7\n 459→2026-01-28 22:57:40.550 [warning] RetransmitBuffer::insert: seq=27, size=778, pending_count=7\n 460→2026-01-28 22:57:40.551 [info] [UDP] Sending 778 bytes to 91.132.224.119:4433\n 461→2026-01-28 22:57:40.551 [info] [UDP] Successfully sent 778 bytes to 91.132.224.119:4433\n 462→2026-01-28 22:57:40.573 [info] [UDP] Received 108 bytes from 91.132.224.119:4433\n 463→2026-01-28 22:57:40.574 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=108, obfuscated_seq=0xe0cd71cafce96fd9, deobfuscated_seq=21\n 464→2026-01-28 22:57:40.574 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=e0cd71cafce96fd9\n 465→2026-01-28 22:57:40.574 [warning] Replay check passed, proceeding to decryption\n 466→2026-01-28 22:57:40.574 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=21, decrypted_size=84\n 467→2026-01-28 22:57:40.574 [warning] Frame decoded: kind=1, payload_size=64\n 468→2026-01-28 22:57:40.574 [warning] TunDevice::write: 64 bytes, IPv4 140.82.121.5 -> 10.8.0.2, IHL=5, proto=6, total_len=64\n 469→2026-01-28 22:57:40.574 [warning] TunDevice::write: SUCCESS 64 bytes sent to Wintun\n 470→2026-01-28 22:57:40.575 [warning] TUN write: 64 bytes -> 10.8.0.2\n 471→2026-01-28 22:57:40.575 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n 472→2026-01-28 22:57:40.575 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n 473→2026-01-28 22:57:40.575 [warning] RetransmitBuffer::insert: seq=29, size=96, pending_count=8\n 474→2026-01-28 22:57:40.575 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n 475→2026-01-28 22:57:40.575 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n 476→2026-01-28 22:57:40.576 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 477→2026-01-28 22:57:40.576 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x01bf357e3cd10f24, deobfuscated_seq=22\n 478→2026-01-28 22:57:40.577 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=01bf357e3cd10f24\n 479→2026-01-28 22:57:40.577 [warning] Replay check passed, proceeding to decryption\n 480→2026-01-28 22:57:40.578 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=22, decrypted_size=21\n 481→2026-01-28 22:57:40.579 [warning] Frame decoded: kind=2, payload_size=0\n 482→2026-01-28 22:57:40.579 [warning] process_ack called: stream_id=0, ack=18, bitmap=0x00000000, pending_before=9\n 483→2026-01-28 22:57:40.579 [warning] acknowledge_cumulative: ack_seq=18, pending_count=9, pending_range=[17, 29]\n 484→2026-01-28 22:57:40.579 [warning] Acknowledging packet seq=17\n 485→2026-01-28 22:57:40.579 [warning] Acknowledging packet seq=18\n 486→2026-01-28 22:57:40.579 [warning] acknowledge_cumulative done: acked=2 packets\n 487→2026-01-28 22:57:40.579 [warning] process_ack done: pending_after=7\n 488→2026-01-28 22:57:40.587 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 489→2026-01-28 22:57:40.588 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xac1176065be94fac, deobfuscated_seq=23\n 490→2026-01-28 22:57:40.588 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=ac1176065be94fac\n 491→2026-01-28 22:57:40.588 [warning] Replay check passed, proceeding to decryption\n 492→2026-01-28 22:57:40.588 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=23, decrypted_size=21\n 493→2026-01-28 22:57:40.588 [warning] Frame decoded: kind=2, payload_size=0\n 494→2026-01-28 22:57:40.588 [warning] process_ack called: stream_id=0, ack=19, bitmap=0x00000000, pending_before=7\n 495→2026-01-28 22:57:40.589 [warning] acknowledge_cumulative: ack_seq=19, pending_count=7, pending_range=[19, 29]\n 496→2026-01-28 22:57:40.589 [warning] Acknowledging packet seq=19\n 497→2026-01-28 22:57:40.589 [warning] acknowledge_cumulative done: acked=1 packets\n 498→2026-01-28 22:57:40.589 [warning] process_ack done: pending_after=6\n 499→2026-01-28 22:57:40.605 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n 500→2026-01-28 22:57:40.605 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xaed8686da5f1e1db, deobfuscated_seq=24\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"6ac110f2-5246-48ec-bb5d-4c5387d4b6ad","uuid":"a9fd950d-2845-4af9-8c42-9e6554bc9497","tool_use_result":{"type":"text","file":{"filePath":"/tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/daemon_logs_latest.txt","content":"Windows PowerShell\n(C) Корпорация Майкрософт (Microsoft Corporation). Все права защищены.\n\nУстановите последнюю версию PowerShell для новых функций и улучшения! https://aka.ms/PSWindows\n\nPS C:\\WINDOWS\\system32> cd \"E:\\VEIL VPN\"\nPS E:\\VEIL VPN> .\\veil-service.exe --debug\nRunning in debug mode (press Ctrl+C to stop)...\n2026-01-28 22:57:24.023 [info] ========================================\n2026-01-28 22:57:24.025 [info] VEIL VPN SERVICE STARTING\n2026-01-28 22:57:24.025 [info] ========================================\n2026-01-28 22:57:24.026 [info] IPC server started on \\\\.\\pipe\\veil-client\n2026-01-28 22:57:24.026 [info] IPC server started successfully\n2026-01-28 22:57:24.026 [info] Listening on named pipe: \\\\.\\pipe\\veil-client\n2026-01-28 22:57:24.026 [info] Service is now running\n2026-01-28 22:57:24.026 [info] ========================================\n2026-01-28 22:57:24.026 [info] VEIL VPN SERVICE RUNNING\n2026-01-28 22:57:24.026 [info] ========================================\n2026-01-28 22:57:24.026 [info] Service is now accepting IPC connections\n2026-01-28 22:57:24.026 [info] VPN tunnel functionality is available\n[IPC Server Debug] Data available on client 0: 64 bytes\n[IPC Server Debug] Read 64 bytes from client 0\n[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n\n[IPC Server Debug] receive_buffer size: 64, contains newline: YES\n[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n[IPC Debug] Payload: {\"command_type\":\"get_diagnostics\"}\n[IPC Server Debug] Deserialization result: SUCCESS\n[IPC Server Debug] message_handler_ is set: YES\n[IPC Server Debug] Calling message_handler_\n[IPC Debug] serialize_message: msg.type=2, payload.index=2\n[IPC Debug] Payload holds Command=0, Event=0, Response=1\n[IPC Debug] Serializing as Response\n[IPC Debug] serialize_response: resp.index=2\n[IPC Debug] Serializing DiagnosticsResponse\n[IPC Debug] serialize_response result: {\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"}\n[IPC Debug] Serialized message: {\"payload\":{\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"},\"type\":\"response\"}\n[IPC Server Debug] message_handler_ returned\n[IPC Server Debug] Data available on client 0: 64 bytes\n[IPC Server Debug] Read 64 bytes from client 0\n[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n\n[IPC Server Debug] receive_buffer size: 64, contains newline: YES\n[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n[IPC Debug] Payload: {\"command_type\":\"get_diagnostics\"}\n[IPC Server Debug] Deserialization result: SUCCESS\n[IPC Server Debug] message_handler_ is set: YES\n[IPC Server Debug] Calling message_handler_\n[IPC Debug] serialize_message: msg.type=2, payload.index=2\n[IPC Debug] Payload holds Command=0, Event=0, Response=1\n[IPC Debug] Serializing as Response\n[IPC Debug] serialize_response: resp.index=2\n[IPC Debug] Serializing DiagnosticsResponse\n[IPC Debug] serialize_response result: {\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"}\n[IPC Debug] Serialized message: {\"payload\":{\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":0,\"packets_retransmitted\":0,\"packets_sent\":0,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"},\"type\":\"response\"}\n[IPC Server Debug] message_handler_ returned\n[IPC Server Debug] Data available on client 0: 448 bytes\n[IPC Server Debug] Read 448 bytes from client 0\n[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}},\"type\":\"command\"}\n\n[IPC Server Debug] receive_buffer size: 448, contains newline: YES\n[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}},\"type\":\"command\"}\n[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}},\"type\":\"command\"}\n[IPC Debug] Payload: {\"command_type\":\"connect\",\"config\":{\"auto_reconnect\":true,\"custom_routes\":[],\"enable_obfuscation\":true,\"key_file\":\"C:/VEIL/client.key\",\"max_reconnect_attempts\":5,\"obfuscation_seed_file\":\"C:/VEIL/obfuscation.seed\",\"reconnect_interval_sec\":5,\"route_all_traffic\":true,\"server_address\":\"91.132.224.119\",\"server_port\":4433,\"tun_device_name\":\"veil0\",\"tun_ip_address\":\"10.8.0.2\",\"tun_mtu\":1400,\"tun_netmask\":\"255.255.255.0\"}}\n[IPC Server Debug] Deserialization result: SUCCESS\n[IPC Server Debug] message_handler_ is set: YES\n[IPC Server Debug] Calling message_handler_\n2026-01-28 22:57:39.423 [info] Initializing new VPN connection...\n2026-01-28 22:57:39.423 [info] Connecting to 91.132.224.119:4433\n2026-01-28 22:57:39.423 [info] Initializing tunnel...\n2026-01-28 22:57:39.425 [info] [UDP] Socket bound successfully to 0.0.0.0:60617\n2026-01-28 22:57:39.425 [info] [UDP] Socket local address: 0.0.0.0:60617\n2026-01-28 22:57:39.426 [info] UDP socket opened on random port 60617 (requested port 0)\n2026-01-28 22:57:39.426 [info] Tunnel initialized successfully\n2026-01-28 22:57:39.426 [info] Tunnel initialized successfully\n2026-01-28 22:57:39.426 [info] UDP socket bound to local port 60617\n2026-01-28 22:57:39.508 [info] Adding Windows Firewall rule for UDP port 60617\nОК.\n\n2026-01-28 22:57:39.577 [info] Firewall rule 'VEIL_VPN_UDP_60617' created successfully\n2026-01-28 22:57:39.577 [info] ========================================\n2026-01-28 22:57:39.577 [info] VPN CONNECTION ESTABLISHED\n2026-01-28 22:57:39.577 [info] ========================================\n2026-01-28 22:57:39.577 [[IPC Debug] serialize_message: msg.type=info1] ========================================\n2026-01-28 22:57:39.578 [, payload.index=1info\n] VPN TUNNEL THREAD STARTED\n[IPC Debug] Payload holds Command=2026-01-28 22:57:39.578 [0, Event=info1] ========================================\n2026-01-28 22:57:39.578 [, Response=0info\n[IPC Debug] Serializing as Event] Running tunnel event loop...\n\n2026-01-28 22:57:39.578 [[IPC Debug] Serialized message: {\"payload\":{\"event_type\":\"connection_state_change\",\"message\":\"Connected to 91.132.224.119\",\"new_state\":\"connected\",\"old_state\":\"disconnected\"},\"type\":\"event\"}\ninfo[IPC Debug] serialize_message: msg.type=] Tunnel starting...\n22026-01-28 22:57:39.579 [, payload.index=2\n[IPC Debug] Payload holds Command=info0, Event=0, Response=1\n[IPC Debug] Serializing as Response\n[IPC Debug] serialize_response: resp.index=] Connection state: 0 -> 1\n2026-01-28 22:57:39.580 [4\ninfo[IPC Debug] Serializing SuccessResponse: message=Connected successfully\n] Tunnel state changed: 0 -> 1\n[IPC Debug] serialize_response result: {\"message\":\"Connected successfully\",\"response_type\":\"success\"}\n[IPC Debug] Serialized message: {\"payload\":{\"message\":\"Connected successfully\",\"response_type\":\"success\"},\"type\":\"response\"}\n[IPC Server Debug] message_handler_ returned2026-01-28 22:57:39.581 [\ninfo] [UDP] Best interface for 91.132.224.119:4433 is index 19\n2026-01-28 22:57:39.585 [info] [UDP] Found IP 192.168.0.102 for interface index 19\n2026-01-28 22:57:39.586 [info] [UDP] Socket rebound to 192.168.0.102:60617 (interface index 19)\n2026-01-28 22:57:39.586 [info] [UDP] UDP socket connected to 91.132.224.119:4433\n2026-01-28 22:57:39.586 [info] [UDP] Local address after connect: 192.168.0.102:60617\n2026-01-28 22:57:39.586 [info] Connection state: 1 -> 2\n2026-01-28 22:57:39.586 [info] Tunnel state changed: 1 -> 2\n2026-01-28 22:57:39.586 [info] Performing handshake with 91.132.224.119:4433\n2026-01-28 22:57:39.587 [info] ========================================\n2026-01-28 22:57:39.587 [info] HANDSHAKE: Generated INIT message\n2026-01-28 22:57:39.587 [info] Size: 477 bytes\n2026-01-28 22:57:39.587 [info] Target: 91.132.224.119:4433\n2026-01-28 22:57:39.587 [info] ========================================\n2026-01-28 22:57:39.587 [info] [UDP] Sending 477 bytes to 91.132.224.119:4433\n2026-01-28 22:57:39.588 [info] [UDP] Successfully sent 477 bytes to 91.132.224.119:4433\n2026-01-28 22:57:39.588 [info] HANDSHAKE: INIT sent successfully, waiting for RESPONSE...\n2026-01-28 22:57:39.693 [info] [UDP] Received 264 bytes from 91.132.224.119:4433\n2026-01-28 22:57:39.694 [info] HANDSHAKE: Received packet from 91.132.224.119:4433, size: 264 bytes\n2026-01-28 22:57:39.694 [info] TransportSession created: session_id=11598378240004569761\n2026-01-28 22:57:39.695 [info] send_key_fp=4caa4770, send_nonce_fp=d90c12d6\n2026-01-28 22:57:39.695 [info] recv_key_fp=c3d53afa, recv_nonce_fp=19f54ee0\n2026-01-28 22:57:39.695 [info] send_seq_obfuscation_key_fp=40193c80, recv_seq_obfuscation_key_fp=e25c8a4c\n2026-01-28 22:57:39.695 [info] Handshake completed successfully, session ID: 11598378240004569761\n2026-01-28 22:57:39.695 [info] Creating TUN device after successful handshake...\n2026-01-28 22:57:39.739 [info] Wintun DLL loaded, driver version: 0\n2026-01-28 22:57:39.976 [info] Created Wintun adapter: veil0\n2026-01-28 22:57:39.979 [info] Set IP address 10.8.0.2/24 on veil0\n2026-01-28 22:57:39.980 [info] Set MTU 1400 on veil0\n2026-01-28 22:57:39.985 [info] Wintun session started successfully\n2026-01-28 22:57:40.001 [info] TUN device veil0 opened with IP 10.8.0.2\n2026-01-28 22:57:40.012 [info] Connection state: 2 -> 3\n2026-01-28 22:57:40.016 [info] Tunnel state changed: 2 -> 3\n2026-01-28 22:57:40.016 [info] ========================================\n2026-01-28 22:57:40.016 [info] CONFIGURING ROUTES\n2026-01-28 22:57:40.042 [info] ========================================\n2026-01-28 22:57:40.042 [info] TUN device: veil0\n2026-01-28 22:57:40.044 [info] Route all traffic: true\n2026-01-28 22:57:40.045 [info] Setting up default route via VPN...\n2026-01-28 22:57:40.046 [info] Current default gateway: 192.168.0.1 via Ethernet\n2026-01-28 22:57:40.055 [info] Added route: 91.132.224.119/255.255.255.255 via 192.168.0.1 dev Ethernet metric 1\n2026-01-28 22:57:40.055 [info] Added bypass route for VPN server 91.132.224.119 via 192.168.0.1 (metric 1)\n2026-01-28 22:57:40.062 [info] Added route: 0.0.0.0/128.0.0.0 via (direct) dev veil0 metric 5\n2026-01-28 22:57:40.071 [info] Added route: 128.0.0.0/128.0.0.0 via (direct) dev veil0 metric 5\n2026-01-28 22:57:40.071 [info] Default route configured via veil0 with metric 5\n2026-01-28 22:57:40.071 [info] ========================================\n2026-01-28 22:57:40.071 [info] ROUTE CONFIGURATION COMPLETE\n2026-01-28 22:57:40.072 [info] ========================================\n2026-01-28 22:57:40.072 [warning] RetransmitBuffer::insert: seq=0, size=317, pending_count=0\n2026-01-28 22:57:40.072 [info] [UDP] Sending 317 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.072 [info] [UDP] Successfully sent 317 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.096 [warning] RetransmitBuffer::insert: seq=1, size=114, pending_count=1\n2026-01-28 22:57:40.097 [info] [UDP] Sending 114 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.098 [info] [UDP] Successfully sent 114 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.111 [warning] RetransmitBuffer::insert: seq=2, size=104, pending_count=2\n2026-01-28 22:57:40.112 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.113 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.158 [warning] RetransmitBuffer::insert: seq=3, size=108, pending_count=3\n2026-01-28 22:57:40.159 [info] [UDP] Sending 108 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.159 [info] [UDP] Successfully sent 108 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.174 [info] [UDP] Sending 317 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.175 [info] [UDP] Successfully sent 317 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.176 [warning] RetransmitBuffer::insert: seq=4, size=92, pending_count=4\n2026-01-28 22:57:40.176 [info] [UDP] Sending 92 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.176 [info] [UDP] Successfully sent 92 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.176 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.176 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x310e44ab12148745, deobfuscated_seq=0\n2026-01-28 22:57:40.176 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=310e44ab12148745\n2026-01-28 22:57:40.176 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.176 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=0, decrypted_size=21\n2026-01-28 22:57:40.177 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.177 [warning] process_ack called: stream_id=0, ack=0, bitmap=0x00000000, pending_before=5\n2026-01-28 22:57:40.177 [warning] acknowledge_cumulative: ack_seq=0, pending_count=5, pending_range=[0, 4]\n2026-01-28 22:57:40.177 [warning] Acknowledging packet seq=0\n2026-01-28 22:57:40.177 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.177 [warning] process_ack done: pending_after=4\n2026-01-28 22:57:40.177 [warning] RetransmitBuffer::insert: seq=5, size=120, pending_count=4\n2026-01-28 22:57:40.177 [info] [UDP] Sending 120 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.178 [info] [UDP] Successfully sent 120 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.200 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.200 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x2e6423fae41874ca, deobfuscated_seq=1\n2026-01-28 22:57:40.200 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=2e6423fae41874ca\n2026-01-28 22:57:40.200 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.201 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=1, decrypted_size=21\n2026-01-28 22:57:40.201 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.201 [warning] process_ack called: stream_id=0, ack=1, bitmap=0x00000000, pending_before=5\n2026-01-28 22:57:40.201 [warning] acknowledge_cumulative: ack_seq=1, pending_count=5, pending_range=[1, 5]\n2026-01-28 22:57:40.201 [warning] Acknowledging packet seq=1\n2026-01-28 22:57:40.201 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.201 [warning] process_ack done: pending_after=4\n2026-01-28 22:57:40.215 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.215 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xa2d66203dc801863, deobfuscated_seq=2\n2026-01-28 22:57:40.215 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=a2d66203dc801863\n2026-01-28 22:57:40.215 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.216 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=2, decrypted_size=21\n2026-01-28 22:57:40.216 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.216 [warning] process_ack called: stream_id=0, ack=2, bitmap=0x00000000, pending_before=4\n2026-01-28 22:57:40.216 [warning] acknowledge_cumulative: ack_seq=2, pending_count=4, pending_range=[2, 5]\n2026-01-28 22:57:40.216 [warning] Acknowledging packet seq=2\n2026-01-28 22:57:40.216 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.217 [warning] process_ack done: pending_after=3\n2026-01-28 22:57:40.245 [info] [UDP] Received 104 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.246 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x8b88c57c3010b00f, deobfuscated_seq=3\n2026-01-28 22:57:40.246 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=8b88c57c3010b00f\n2026-01-28 22:57:40.246 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.246 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=3, decrypted_size=80\n2026-01-28 22:57:40.246 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 22:57:40.246 [warning] TunDevice::write: 60 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=60\n2026-01-28 22:57:40.247 [warning] TunDevice::write: SUCCESS 60 bytes sent to Wintun\n2026-01-28 22:57:40.247 [warning] TUN write: 60 bytes -> 10.8.0.2\n2026-01-28 22:57:40.247 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.247 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.247 [warning] RetransmitBuffer::insert: seq=7, size=96, pending_count=3\n2026-01-28 22:57:40.247 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.248 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.260 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.260 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xcb719861080e8e18, deobfuscated_seq=4\n2026-01-28 22:57:40.260 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=cb719861080e8e18\n2026-01-28 22:57:40.260 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.260 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=4, decrypted_size=21\n2026-01-28 22:57:40.260 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.261 [warning] process_ack called: stream_id=0, ack=3, bitmap=0x00000000, pending_before=4\n2026-01-28 22:57:40.261 [warning] acknowledge_cumulative: ack_seq=3, pending_count=4, pending_range=[3, 7]\n2026-01-28 22:57:40.261 [warning] Acknowledging packet seq=3\n2026-01-28 22:57:40.261 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.261 [warning] process_ack done: pending_after=3\n[IPC Server Debug] Data available on client 0: 64 bytes\n[IPC Server Debug] Read 64 bytes from client 0\n[IPC Server Debug] Buffer content: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n\n[IPC Server Debug] receive_buffer size: 64, contains newline: YES\n[IPC Server Debug] Received message from client 0: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n[IPC Debug] Deserializing JSON: {\"payload\":{\"command_type\":\"get_diagnostics\"},\"type\":\"command\"}\n[IPC Debug] Payload: {\"command_type\":\"get_diagnostics\"}\n[IPC Server Debug] Deserialization result: SUCCESS\n[IPC Server Debug] message_handler_ is set: YES\n[IPC Server Debug] Calling message_handler_\n[IPC Debug] serialize_message: msg.type=2, payload.index=2\n[IPC Debug] Payload holds Command=0, Event=0, Response=1\n[IPC Debug] Serializing as Response\n[IPC Debug] serialize_response: resp.index=2\n[IPC Debug] Serializing DiagnosticsResponse\n[IPC Debug] serialize_response result: {\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":5,\"packets_retransmitted\":0,\"packets_sent\":7,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"}\n[IPC Debug] Serialized message: {\"payload\":{\"diagnostics\":{\"obfuscation\":{\"active_dpi_mode\":\"\",\"current_padding_size\":0,\"heartbeat_mode\":\"\",\"last_heartbeat_sec\":0.0,\"padding_enabled\":false,\"timing_jitter_model\":\"\",\"timing_jitter_param\":0.0},\"protocol\":{\"loss_percentage\":0.0,\"packets_lost\":0,\"packets_received\":5,\"packets_retransmitted\":0,\"packets_sent\":7,\"recv_sequence\":0,\"send_sequence\":0},\"reassembly\":{\"fragments_pending\":0,\"fragments_received\":0,\"messages_reassembled\":0,\"reassembly_timeouts\":0},\"recent_events\":[]},\"response_type\":\"diagnostics\"},\"type\":\"response\"}\n[IPC Server Debug] message_handler_ returned\n2026-01-28 22:57:40.275 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.275 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4ccfeedc9bdd9180, deobfuscated_seq=5\n2026-01-28 22:57:40.275 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=4ccfeedc9bdd9180\n2026-01-28 22:57:40.276 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.276 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=5, decrypted_size=21\n2026-01-28 22:57:40.276 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.276 [warning] process_ack called: stream_id=0, ack=4, bitmap=0x00000000, pending_before=3\n2026-01-28 22:57:40.276 [warning] acknowledge_cumulative: ack_seq=4, pending_count=3, pending_range=[4, 7]\n2026-01-28 22:57:40.276 [warning] Acknowledging packet seq=4\n2026-01-28 22:57:40.276 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.276 [warning] process_ack done: pending_after=2\n2026-01-28 22:57:40.277 [warning] RetransmitBuffer::insert: seq=8, size=104, pending_count=2\n2026-01-28 22:57:40.277 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.277 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.277 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.277 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xa3243e4d3f8b6a29, deobfuscated_seq=6\n2026-01-28 22:57:40.277 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=a3243e4d3f8b6a29\n2026-01-28 22:57:40.277 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.278 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=6, decrypted_size=21\n2026-01-28 22:57:40.278 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.278 [warning] process_ack called: stream_id=0, ack=5, bitmap=0x00000000, pending_before=3\n2026-01-28 22:57:40.278 [warning] acknowledge_cumulative: ack_seq=5, pending_count=3, pending_range=[5, 8]\n2026-01-28 22:57:40.278 [warning] Acknowledging packet seq=5\n2026-01-28 22:57:40.278 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.278 [warning] process_ack done: pending_after=2\n2026-01-28 22:57:40.349 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.350 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x64925b03ac7f794f, deobfuscated_seq=7\n2026-01-28 22:57:40.350 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=64925b03ac7f794f\n2026-01-28 22:57:40.350 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.350 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=7, decrypted_size=21\n2026-01-28 22:57:40.350 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.351 [warning] process_ack called: stream_id=0, ack=7, bitmap=0x00000000, pending_before=2\n2026-01-28 22:57:40.351 [warning] acknowledge_cumulative: ack_seq=7, pending_count=2, pending_range=[7, 8]\n2026-01-28 22:57:40.351 [warning] Acknowledging packet seq=7\n2026-01-28 22:57:40.351 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.351 [warning] process_ack done: pending_after=1\n2026-01-28 22:57:40.351 [warning] RetransmitBuffer::insert: seq=9, size=84, pending_count=1\n2026-01-28 22:57:40.351 [info] [UDP] Sending 84 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.352 [info] [UDP] Successfully sent 84 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.377 [warning] RetransmitBuffer::insert: seq=10, size=613, pending_count=2\n2026-01-28 22:57:40.377 [info] [UDP] Sending 613 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.377 [info] [UDP] Successfully sent 613 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.379 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.379 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x1415fe78e2d70f35, deobfuscated_seq=8\n2026-01-28 22:57:40.380 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=1415fe78e2d70f35\n2026-01-28 22:57:40.380 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.380 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=8, decrypted_size=21\n2026-01-28 22:57:40.380 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.380 [warning] process_ack called: stream_id=0, ack=8, bitmap=0x00000000, pending_before=3\n2026-01-28 22:57:40.380 [warning] acknowledge_cumulative: ack_seq=8, pending_count=3, pending_range=[8, 10]\n2026-01-28 22:57:40.381 [warning] Acknowledging packet seq=8\n2026-01-28 22:57:40.381 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.381 [warning] process_ack done: pending_after=2\n2026-01-28 22:57:40.391 [info] [UDP] Received 104 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.391 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x5ad76ea592243223, deobfuscated_seq=9\n2026-01-28 22:57:40.391 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=5ad76ea592243223\n2026-01-28 22:57:40.391 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.391 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=9, decrypted_size=80\n2026-01-28 22:57:40.392 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 22:57:40.392 [warning] TunDevice::write: 60 bytes, IPv4 140.82.121.5 -> 10.8.0.2, IHL=5, proto=6, total_len=60\n2026-01-28 22:57:40.392 [warning] TunDevice::write: SUCCESS 60 bytes sent to Wintun\n2026-01-28 22:57:40.392 [warning] TUN write: 60 bytes -> 10.8.0.2\n2026-01-28 22:57:40.392 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.392 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.393 [warning] RetransmitBuffer::insert: seq=12, size=96, pending_count=2\n2026-01-28 22:57:40.396 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.397 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.409 [warning] RetransmitBuffer::insert: seq=13, size=104, pending_count=3\n2026-01-28 22:57:40.410 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.410 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.424 [warning] RetransmitBuffer::insert: seq=14, size=104, pending_count=4\n2026-01-28 22:57:40.427 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.428 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.440 [warning] RetransmitBuffer::insert: seq=15, size=1394, pending_count=5\n2026-01-28 22:57:40.442 [warning] RetransmitBuffer::insert: seq=16, size=94, pending_count=6\n2026-01-28 22:57:40.442 [info] [UDP] Sending 1394 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.442 [info] [UDP] Successfully sent 1394 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.442 [info] [UDP] Sending 94 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.442 [info] [UDP] Successfully sent 94 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.454 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.454 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x84c64c9cd549af32, deobfuscated_seq=10\n2026-01-28 22:57:40.454 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=84c64c9cd549af32\n2026-01-28 22:57:40.455 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.455 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=10, decrypted_size=21\n2026-01-28 22:57:40.455 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.455 [warning] process_ack called: stream_id=0, ack=9, bitmap=0x00000000, pending_before=7\n2026-01-28 22:57:40.455 [warning] acknowledge_cumulative: ack_seq=9, pending_count=7, pending_range=[9, 16]\n2026-01-28 22:57:40.455 [warning] Acknowledging packet seq=9\n2026-01-28 22:57:40.456 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.456 [warning] process_ack done: pending_after=6\n2026-01-28 22:57:40.456 [warning] RetransmitBuffer::insert: seq=17, size=367, pending_count=6\n2026-01-28 22:57:40.459 [info] [UDP] Sending 367 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.459 [info] [UDP] Successfully sent 367 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.471 [warning] RetransmitBuffer::insert: seq=18, size=104, pending_count=7\n2026-01-28 22:57:40.472 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.473 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.481 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.481 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xff202a32331b3386, deobfuscated_seq=11\n2026-01-28 22:57:40.481 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=ff202a32331b3386\n2026-01-28 22:57:40.481 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.481 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=11, decrypted_size=21\n2026-01-28 22:57:40.482 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.482 [warning] process_ack called: stream_id=0, ack=10, bitmap=0x00000000, pending_before=8\n2026-01-28 22:57:40.482 [warning] acknowledge_cumulative: ack_seq=10, pending_count=8, pending_range=[10, 18]\n2026-01-28 22:57:40.482 [warning] Acknowledging packet seq=10\n2026-01-28 22:57:40.482 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.482 [warning] process_ack done: pending_after=7\n2026-01-28 22:57:40.482 [warning] RetransmitBuffer::insert: seq=19, size=104, pending_count=7\n2026-01-28 22:57:40.483 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.483 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.499 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.500 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xd299d42c02ead413, deobfuscated_seq=12\n2026-01-28 22:57:40.500 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=d299d42c02ead413\n2026-01-28 22:57:40.500 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.500 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=12, decrypted_size=21\n2026-01-28 22:57:40.500 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.500 [warning] process_ack called: stream_id=0, ack=12, bitmap=0x00000000, pending_before=8\n2026-01-28 22:57:40.501 [warning] acknowledge_cumulative: ack_seq=12, pending_count=8, pending_range=[12, 19]\n2026-01-28 22:57:40.501 [warning] Acknowledging packet seq=12\n2026-01-28 22:57:40.501 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.501 [warning] process_ack done: pending_after=7\n2026-01-28 22:57:40.501 [warning] RetransmitBuffer::insert: seq=20, size=104, pending_count=7\n2026-01-28 22:57:40.501 [info] [UDP] Sending 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.502 [info] [UDP] Successfully sent 104 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.510 [info] [UDP] Received 96 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.510 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0x78623e2037c68ef0, deobfuscated_seq=13\n2026-01-28 22:57:40.510 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=78623e2037c68ef0\n2026-01-28 22:57:40.511 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.511 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=13, decrypted_size=72\n2026-01-28 22:57:40.511 [warning] Frame decoded: kind=1, payload_size=52\n2026-01-28 22:57:40.511 [warning] TunDevice::write: 52 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=52\n2026-01-28 22:57:40.511 [warning] TunDevice::write: SUCCESS 52 bytes sent to Wintun\n2026-01-28 22:57:40.511 [warning] TUN write: 52 bytes -> 10.8.0.2\n2026-01-28 22:57:40.512 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.512 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.513 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.513 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x44ecd8af1e3acdf0, deobfuscated_seq=14\n2026-01-28 22:57:40.514 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=44ecd8af1e3acdf0\n2026-01-28 22:57:40.514 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.514 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=14, decrypted_size=21\n2026-01-28 22:57:40.514 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.514 [warning] process_ack called: stream_id=0, ack=13, bitmap=0x00000000, pending_before=8\n2026-01-28 22:57:40.514 [warning] acknowledge_cumulative: ack_seq=13, pending_count=8, pending_range=[13, 20]\n2026-01-28 22:57:40.514 [warning] Acknowledging packet seq=13\n2026-01-28 22:57:40.514 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.515 [warning] process_ack done: pending_after=7\n2026-01-28 22:57:40.515 [info] [UDP] Received 189 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.515 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=189, obfuscated_seq=0xb8b2fd9f21c67af7, deobfuscated_seq=15\n2026-01-28 22:57:40.515 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=b8b2fd9f21c67af7\n2026-01-28 22:57:40.515 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.515 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=15, decrypted_size=165\n2026-01-28 22:57:40.515 [warning] Frame decoded: kind=1, payload_size=145\n2026-01-28 22:57:40.516 [warning] TunDevice::write: 145 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=145\n2026-01-28 22:57:40.516 [warning] TunDevice::write: SUCCESS 145 bytes sent to Wintun\n2026-01-28 22:57:40.516 [warning] TUN write: 145 bytes -> 10.8.0.2\n2026-01-28 22:57:40.516 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.516 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.523 [info] [UDP] Received 104 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.524 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xc24fbc16705a6f6e, deobfuscated_seq=16\n2026-01-28 22:57:40.524 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=c24fbc16705a6f6e\n2026-01-28 22:57:40.524 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.524 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=16, decrypted_size=80\n2026-01-28 22:57:40.524 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 22:57:40.524 [warning] TunDevice::write: 60 bytes, IPv4 8.47.69.10 -> 10.8.0.2, IHL=5, proto=6, total_len=60\n2026-01-28 22:57:40.524 [warning] TunDevice::write: SUCCESS 60 bytes sent to Wintun\n2026-01-28 22:57:40.525 [warning] TUN write: 60 bytes -> 10.8.0.2\n2026-01-28 22:57:40.525 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.525 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.525 [warning] RetransmitBuffer::insert: seq=24, size=96, pending_count=7\n2026-01-28 22:57:40.525 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.526 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.530 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.530 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xc21b5ee725117822, deobfuscated_seq=17\n2026-01-28 22:57:40.530 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=c21b5ee725117822\n2026-01-28 22:57:40.531 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.531 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=17, decrypted_size=21\n2026-01-28 22:57:40.531 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.531 [warning] process_ack called: stream_id=0, ack=14, bitmap=0x00000000, pending_before=8\n2026-01-28 22:57:40.531 [warning] acknowledge_cumulative: ack_seq=14, pending_count=8, pending_range=[14, 24]\n2026-01-28 22:57:40.531 [warning] Acknowledging packet seq=14\n2026-01-28 22:57:40.532 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.532 [warning] process_ack done: pending_after=7\n2026-01-28 22:57:40.532 [warning] RetransmitBuffer::insert: seq=25, size=1394, pending_count=7\n2026-01-28 22:57:40.535 [warning] RetransmitBuffer::insert: seq=26, size=94, pending_count=8\n2026-01-28 22:57:40.535 [info] [UDP] Sending 1394 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.535 [info] [UDP] Successfully sent 1394 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.535 [info] [UDP] Sending 94 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.535 [info] [UDP] Successfully sent 94 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.545 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.545 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xaac5b530e614b294, deobfuscat | |
| [2026-01-28T20:03:43.473Z] [INFO] ed_seq=18\n2026-01-28 22:57:40.545 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=aac5b530e614b294\n2026-01-28 22:57:40.546 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.546 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=18, decrypted_size=21\n2026-01-28 22:57:40.546 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.546 [warning] process_ack called: stream_id=0, ack=15, bitmap=0x00000000, pending_before=9\n2026-01-28 22:57:40.546 [warning] acknowledge_cumulative: ack_seq=15, pending_count=9, pending_range=[15, 26]\n2026-01-28 22:57:40.546 [warning] Acknowledging packet seq=15\n2026-01-28 22:57:40.546 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.547 [warning] process_ack done: pending_after=8\n2026-01-28 22:57:40.547 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.547 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x818b8825c8e20b16, deobfuscated_seq=19\n2026-01-28 22:57:40.547 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=818b8825c8e20b16\n2026-01-28 22:57:40.549 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.549 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=19, decrypted_size=21\n2026-01-28 22:57:40.550 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.550 [warning] process_ack called: stream_id=0, ack=16, bitmap=0x00000000, pending_before=8\n2026-01-28 22:57:40.550 [warning] acknowledge_cumulative: ack_seq=16, pending_count=8, pending_range=[16, 26]\n2026-01-28 22:57:40.550 [warning] Acknowledging packet seq=16\n2026-01-28 22:57:40.550 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.550 [warning] process_ack done: pending_after=7\n2026-01-28 22:57:40.550 [warning] RetransmitBuffer::insert: seq=27, size=778, pending_count=7\n2026-01-28 22:57:40.551 [info] [UDP] Sending 778 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.551 [info] [UDP] Successfully sent 778 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.573 [info] [UDP] Received 108 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.574 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=108, obfuscated_seq=0xe0cd71cafce96fd9, deobfuscated_seq=21\n2026-01-28 22:57:40.574 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=e0cd71cafce96fd9\n2026-01-28 22:57:40.574 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.574 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=21, decrypted_size=84\n2026-01-28 22:57:40.574 [warning] Frame decoded: kind=1, payload_size=64\n2026-01-28 22:57:40.574 [warning] TunDevice::write: 64 bytes, IPv4 140.82.121.5 -> 10.8.0.2, IHL=5, proto=6, total_len=64\n2026-01-28 22:57:40.574 [warning] TunDevice::write: SUCCESS 64 bytes sent to Wintun\n2026-01-28 22:57:40.575 [warning] TUN write: 64 bytes -> 10.8.0.2\n2026-01-28 22:57:40.575 [info] [UDP] Sending 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.575 [info] [UDP] Successfully sent 45 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.575 [warning] RetransmitBuffer::insert: seq=29, size=96, pending_count=8\n2026-01-28 22:57:40.575 [info] [UDP] Sending 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.575 [info] [UDP] Successfully sent 96 bytes to 91.132.224.119:4433\n2026-01-28 22:57:40.576 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.576 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x01bf357e3cd10f24, deobfuscated_seq=22\n2026-01-28 22:57:40.577 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=01bf357e3cd10f24\n2026-01-28 22:57:40.577 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.578 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=22, decrypted_size=21\n2026-01-28 22:57:40.579 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.579 [warning] process_ack called: stream_id=0, ack=18, bitmap=0x00000000, pending_before=9\n2026-01-28 22:57:40.579 [warning] acknowledge_cumulative: ack_seq=18, pending_count=9, pending_range=[17, 29]\n2026-01-28 22:57:40.579 [warning] Acknowledging packet seq=17\n2026-01-28 22:57:40.579 [warning] Acknowledging packet seq=18\n2026-01-28 22:57:40.579 [warning] acknowledge_cumulative done: acked=2 packets\n2026-01-28 22:57:40.579 [warning] process_ack done: pending_after=7\n2026-01-28 22:57:40.587 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.588 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xac1176065be94fac, deobfuscated_seq=23\n2026-01-28 22:57:40.588 [warning] recv_seq_obfuscation_key_fp=e25c8a4c, first_8_bytes=ac1176065be94fac\n2026-01-28 22:57:40.588 [warning] Replay check passed, proceeding to decryption\n2026-01-28 22:57:40.588 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=23, decrypted_size=21\n2026-01-28 22:57:40.588 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 22:57:40.588 [warning] process_ack called: stream_id=0, ack=19, bitmap=0x00000000, pending_before=7\n2026-01-28 22:57:40.589 [warning] acknowledge_cumulative: ack_seq=19, pending_count=7, pending_range=[19, 29]\n2026-01-28 22:57:40.589 [warning] Acknowledging packet seq=19\n2026-01-28 22:57:40.589 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 22:57:40.589 [warning] process_ack done: pending_after=6\n2026-01-28 22:57:40.605 [info] [UDP] Received 45 bytes from 91.132.224.119:4433\n2026-01-28 22:57:40.605 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xaed8686da5f1e1db, deobfuscated_seq=24","numLines":500,"startLine":1,"totalLines":6024}}} | |
| [2026-01-28T20:03:46.404Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01SnmtsRraD2wtR2H6QuraRq", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "Excellent! I can see TUN writes are succeeding on the client side. Let me search for key patterns to understand the full picture." | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21618, | |
| "cache_read_input_tokens": 40064, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 21618, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 4, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "727fae7d-401d-42d2-a213-1f0f2b70de66" | |
| } | |
| [2026-01-28T20:03:49.770Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01SnmtsRraD2wtR2H6QuraRq", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01G3DiTHyqUrzpX1eErEZK7u", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write|TUN write\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/daemon_logs_latest.txt | wc -l", | |
| "description": "Count TUN write operations in daemon logs" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21618, | |
| "cache_read_input_tokens": 40064, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 21618, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 4, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "fb69e689-21e3-4c5b-8858-faf6e0ef8efc" | |
| } | |
| [2026-01-28T20:03:51.271Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01SnmtsRraD2wtR2H6QuraRq", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01K7hngAbx4NbkA8mED5Uv6K", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write:.*(FAIL|failed|error)\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/daemon_logs_latest.txt | head -20", | |
| "description": "Check for any TUN write failures" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21618, | |
| "cache_read_input_tokens": 40064, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 21618, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 4, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "6d4d2a7e-b490-4e18-80fa-c6faf7911d7e" | |
| } | |
| [2026-01-28T20:03:52.520Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01SnmtsRraD2wtR2H6QuraRq", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01LxY2zpHnW4AxhtE9Vo5HF1", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write:.*(SUCCESS|sent)\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/daemon_logs_latest.txt | wc -l", | |
| "description": "Count successful TUN writes" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21618, | |
| "cache_read_input_tokens": 40064, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 21618, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 4, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "f0fd0f70-4b4d-4bf3-a405-3aef4e94a28e" | |
| } | |
| [2026-01-28T20:03:52.628Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01G3DiTHyqUrzpX1eErEZK7u", | |
| "type": "tool_result", | |
| "content": "453", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "e5d736d5-5cbc-4174-9c26-e01a5ac626a1", | |
| "tool_use_result": { | |
| "stdout": "453", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:03:52.631Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01K7hngAbx4NbkA8mED5Uv6K", | |
| "type": "tool_result", | |
| "content": "", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "b16f645e-f122-4bfe-82c5-85f14daeee53", | |
| "tool_use_result": { | |
| "stdout": "", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:03:52.633Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01LxY2zpHnW4AxhtE9Vo5HF1", | |
| "type": "tool_result", | |
| "content": "151", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "97e353bc-a934-4855-aa86-5b03014e93a7", | |
| "tool_use_result": { | |
| "stdout": "151", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:03:55.445Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01Pfxk5axKXye6ghxZrYRdJW", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "I see 151 successful TUN writes and no failures. Let me look at the server logs now to understand what's happening on the server side." | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 539, | |
| "cache_read_input_tokens": 61682, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 539, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 1, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "aedcc30c-0c4b-4fd6-92bf-4fe337f12537" | |
| } | |
| [2026-01-28T20:03:58.213Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01Pfxk5axKXye6ghxZrYRdJW", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_018v7Z5shGtNxoow1EXEyFnZ", | |
| "name": "TodoWrite", | |
| "input": { | |
| "todos": [ | |
| { | |
| "content": "Analyze daemon logs for TUN write operations and packet flow", | |
| "status": "completed", | |
| "activeForm": "Analyzing daemon logs for TUN write operations" | |
| }, | |
| { | |
| "content": "Analyze server logs for packet routing", | |
| "status": "in_progress", | |
| "activeForm": "Analyzing server logs for packet routing" | |
| }, | |
| { | |
| "content": "Identify where packets are being lost", | |
| "status": "pending", | |
| "activeForm": "Identifying packet loss location" | |
| }, | |
| { | |
| "content": "Implement fix for the root cause", | |
| "status": "pending", | |
| "activeForm": "Implementing fix for root cause" | |
| }, | |
| { | |
| "content": "Verify fix passes CI checks", | |
| "status": "pending", | |
| "activeForm": "Verifying fix passes CI checks" | |
| } | |
| ] | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 539, | |
| "cache_read_input_tokens": 61682, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 539, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 1, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "89a2c4ec-35db-41dc-9c9d-beabb6796305" | |
| } | |
| [2026-01-28T20:03:59.179Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01Pfxk5axKXye6ghxZrYRdJW", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01RTnM7V5ZctyAnMVgcU7UG6", | |
| "name": "Read", | |
| "input": { | |
| "file_path": "/tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/server_logs_latest.txt", | |
| "limit": 500 | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 539, | |
| "cache_read_input_tokens": 61682, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 539, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 1, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "a1f13906-32ac-4f1a-a29a-544a1314b360" | |
| } | |
| [2026-01-28T20:03:59.233Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_018v7Z5shGtNxoow1EXEyFnZ", | |
| "type": "tool_result", | |
| "content": "Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable" | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "3ca55b25-c110-4123-99eb-2878a1bb0937", | |
| "tool_use_result": { | |
| "oldTodos": [ | |
| { | |
| "content": "Analyze daemon logs for TUN write operations and packet flow", | |
| "status": "in_progress", | |
| "activeForm": "Analyzing daemon logs for TUN write operations" | |
| }, | |
| { | |
| "content": "Analyze server logs for packet routing", | |
| "status": "pending", | |
| "activeForm": "Analyzing server logs for packet routing" | |
| }, | |
| { | |
| "content": "Identify where packets are being lost", | |
| "status": "pending", | |
| "activeForm": "Identifying packet loss location" | |
| }, | |
| { | |
| "content": "Implement fix for the root cause", | |
| "status": "pending", | |
| "activeForm": "Implementing fix for root cause" | |
| }, | |
| { | |
| "content": "Verify fix passes CI checks", | |
| "status": "pending", | |
| "activeForm": "Verifying fix passes CI checks" | |
| } | |
| ], | |
| "newTodos": [ | |
| { | |
| "content": "Analyze daemon logs for TUN write operations and packet flow", | |
| "status": "completed", | |
| "activeForm": "Analyzing daemon logs for TUN write operations" | |
| }, | |
| { | |
| "content": "Analyze server logs for packet routing", | |
| "status": "in_progress", | |
| "activeForm": "Analyzing server logs for packet routing" | |
| }, | |
| { | |
| "content": "Identify where packets are being lost", | |
| "status": "pending", | |
| "activeForm": "Identifying packet loss location" | |
| }, | |
| { | |
| "content": "Implement fix for the root cause", | |
| "status": "pending", | |
| "activeForm": "Implementing fix for root cause" | |
| }, | |
| { | |
| "content": "Verify fix passes CI checks", | |
| "status": "pending", | |
| "activeForm": "Verifying fix passes CI checks" | |
| } | |
| ] | |
| } | |
| } | |
| [2026-01-28T20:03:59.442Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01RTnM7V5ZctyAnMVgcU7UG6","type":"tool_result","content":" 1→Server Configuration\n 2→--------------------\n 3→ Listen Address : 0.0.0.0:4433\n 4→ Max Clients : 253\n 5→ Session Timeout : 300s\n 6→ TUN Device : veil0\n 7→ TUN IP : 10.8.0.1\n 8→ IP Pool : 10.8.0.2 - 10.8.0.254\n 9→ NAT Enabled : Yes\n 10→ External Interface : ens3\n 11→ Verbose : Yes\n 12→ Daemon Mode : No\n 13→\n 14→2026-01-28 20:56:46.186 [info] VEIL Server starting...\n 15→[OK] Pre-shared key loaded\n 16→[i] Opening TUN device...\n 17→2026-01-28 20:56:46.187 [info] Created TUN device: veil0\n 18→2026-01-28 20:56:46.187 [info] Set IP address 10.8.0.1 on veil0\n 19→2026-01-28 20:56:46.188 [info] Set netmask 255.255.255.0 on veil0\n 20→2026-01-28 20:56:46.189 [info] Set MTU 1400 on veil0\n 21→2026-01-28 20:56:46.190 [info] Brought interface veil0 up\n 22→[OK] TUN device veil0 opened with IP 10.8.0.1\n 23→2026-01-28 20:56:46.190 [info] TUN device veil0 opened with IP 10.8.0.1\n 24→[i] Configuring NAT...\n 25→2026-01-28 20:56:46.197 [info] IP forwarding enabled\n 26→2026-01-28 20:56:46.207 [info] NAT configured: veil0 -> ens3 (subnet: 10.8.0.0/24, mode: MASQUERADE)\n 27→[OK] NAT configured: veil0 -> ens3\n 28→2026-01-28 20:56:46.207 [info] NAT configured: veil0 -> ens3\n 29→[i] Opening UDP socket...\n 30→[OK] Listening on 0.0.0.0:4433\n 31→2026-01-28 20:56:46.207 [info] Listening on 0.0.0.0:4433\n 32→2026-01-28 20:56:46.207 [info] Session table initialized with 253 available IPs\n 33→2026-01-28 20:56:46.207 [info] Default signal handlers installed\n 34→\n 35→\n 36→Server Running\n 37→--------------\n 38→● Server is ready and accepting connections\n 39→ Press Ctrl+C to stop\n 40→\n 41→2026-01-28 20:56:46.207 [info] Server running, accepting connections...\n 42→2026-01-28 20:57:41.204 [info] TransportSession created: session_id=11598378240004569761\n 43→2026-01-28 20:57:41.204 [info] send_key_fp=c3d53afa, send_nonce_fp=19f54ee0\n 44→2026-01-28 20:57:41.204 [info] recv_key_fp=4caa4770, recv_nonce_fp=d90c12d6\n 45→2026-01-28 20:57:41.204 [info] send_seq_obfuscation_key_fp=e25c8a4c, recv_seq_obfuscation_key_fp=40193c80\n 46→2026-01-28 20:57:41.204 [info] Created session 1 for 95.79.92.14:60617 with tunnel IP 10.8.0.254\n 47→2026-01-28 20:57:41.204 [info] New client connected from 95.79.92.14:60617, session 1\n 48→● Client connected: 95.79.92.14:60617 (session 1)\n 49→2026-01-28 20:57:41.687 [warning] Processing packet from session 1 (95.79.92.14:60617), size=317\n 50→2026-01-28 20:57:41.688 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=317, obfuscated_seq=0xcbbaf2403e5260a2, deobfuscated_seq=0\n 51→2026-01-28 20:57:41.688 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cbbaf2403e5260a2\n 52→2026-01-28 20:57:41.688 [warning] Replay check passed, proceeding to decryption\n 53→2026-01-28 20:57:41.688 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=0, decrypted_size=293\n 54→2026-01-28 20:57:41.688 [warning] Frame decoded: kind=1, payload_size=273\n 55→2026-01-28 20:57:41.688 [warning] Decrypted 1 frame(s) from session 1\n 56→2026-01-28 20:57:41.688 [warning] Frame kind=1, is_data=true\n 57→2026-01-28 20:57:41.688 [info] Updated tunnel IP for session 1 from 10.8.0.2 to 10.8.0.2 (client uses own IP)\n 58→2026-01-28 20:57:41.688 [warning] Writing 273 bytes to TUN from session 1\n 59→2026-01-28 20:57:41.688 [warning] TunDevice::write: 273 bytes, IPv4 10.8.0.2 -> 10.8.0.255, IHL=5, proto=17, total_len=273\n 60→2026-01-28 20:57:41.688 [warning] TunDevice::write: SUCCESS 273 bytes written\n 61→2026-01-28 20:57:41.688 [warning] TUN write SUCCESS: 273 bytes\n 62→2026-01-28 20:57:41.713 [warning] Processing packet from session 1 (95.79.92.14:60617), size=114\n 63→2026-01-28 20:57:41.713 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=114, obfuscated_seq=0x80f3db6a38cef76e, deobfuscated_seq=1\n 64→2026-01-28 20:57:41.713 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=80f3db6a38cef76e\n 65→2026-01-28 20:57:41.713 [warning] Replay check passed, proceeding to decryption\n 66→2026-01-28 20:57:41.713 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=1, decrypted_size=90\n 67→2026-01-28 20:57:41.713 [warning] Frame decoded: kind=1, payload_size=70\n 68→2026-01-28 20:57:41.713 [warning] Decrypted 1 frame(s) from session 1\n 69→2026-01-28 20:57:41.713 [warning] Frame kind=1, is_data=true\n 70→2026-01-28 20:57:41.713 [warning] Writing 70 bytes to TUN from session 1\n 71→2026-01-28 20:57:41.713 [warning] TunDevice::write: 70 bytes, IPv4 10.8.0.2 -> 10.8.0.255, IHL=5, proto=17, total_len=70\n 72→2026-01-28 20:57:41.713 [warning] TunDevice::write: SUCCESS 70 bytes written\n 73→2026-01-28 20:57:41.713 [warning] TUN write SUCCESS: 70 bytes\n 74→2026-01-28 20:57:41.728 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 75→2026-01-28 20:57:41.728 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x04b3ca006c470831, deobfuscated_seq=2\n 76→2026-01-28 20:57:41.728 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=04b3ca006c470831\n 77→2026-01-28 20:57:41.728 [warning] Replay check passed, proceeding to decryption\n 78→2026-01-28 20:57:41.728 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=2, decrypted_size=80\n 79→2026-01-28 20:57:41.728 [warning] Frame decoded: kind=1, payload_size=60\n 80→2026-01-28 20:57:41.728 [warning] Decrypted 1 frame(s) from session 1\n 81→2026-01-28 20:57:41.728 [warning] Frame kind=1, is_data=true\n 82→2026-01-28 20:57:41.728 [warning] Writing 60 bytes to TUN from session 1\n 83→2026-01-28 20:57:41.728 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=60\n 84→2026-01-28 20:57:41.728 [warning] TunDevice::write: SUCCESS 60 bytes written\n 85→2026-01-28 20:57:41.728 [warning] TUN write SUCCESS: 60 bytes\n 86→2026-01-28 20:57:41.758 [warning] TUN read: 60 bytes, 199.232.175.82 -> 10.8.0.2\n 87→2026-01-28 20:57:41.758 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n 88→2026-01-28 20:57:41.758 [warning] RetransmitBuffer::insert: seq=3, size=104, pending_count=0\n 89→2026-01-28 20:57:41.774 [warning] Processing packet from session 1 (95.79.92.14:60617), size=108\n 90→2026-01-28 20:57:41.774 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=108, obfuscated_seq=0x627b5ff02c353a7d, deobfuscated_seq=3\n 91→2026-01-28 20:57:41.774 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=627b5ff02c353a7d\n 92→2026-01-28 20:57:41.774 [warning] Replay check passed, proceeding to decryption\n 93→2026-01-28 20:57:41.774 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=3, decrypted_size=84\n 94→2026-01-28 20:57:41.774 [warning] Frame decoded: kind=1, payload_size=64\n 95→2026-01-28 20:57:41.774 [warning] Decrypted 1 frame(s) from session 1\n 96→2026-01-28 20:57:41.774 [warning] Frame kind=1, is_data=true\n 97→2026-01-28 20:57:41.774 [warning] Writing 64 bytes to TUN from session 1\n 98→2026-01-28 20:57:41.774 [warning] TunDevice::write: 64 bytes, IPv6 packet\n 99→2026-01-28 20:57:41.774 [warning] TunDevice::write: SUCCESS 64 bytes written\n 100→2026-01-28 20:57:41.774 [warning] TUN write SUCCESS: 64 bytes\n 101→2026-01-28 20:57:41.790 [warning] Processing packet from session 1 (95.79.92.14:60617), size=317\n 102→2026-01-28 20:57:41.790 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=317, obfuscated_seq=0xcbbaf2403e5260a2, deobfuscated_seq=0\n 103→2026-01-28 20:57:41.790 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cbbaf2403e5260a2\n 104→2026-01-28 20:57:41.790 [warning] Packet replay detected or out of window: sequence=0, highest=3\n 105→2026-01-28 20:57:41.790 [warning] Failed to decrypt packet from session 1 (95.79.92.14:60617), size=317. Possible causes: key mismatch, replay attack, or corrupted packet.\n 106→2026-01-28 20:57:41.791 [warning] Processing packet from session 1 (95.79.92.14:60617), size=92\n 107→2026-01-28 20:57:41.791 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=92, obfuscated_seq=0x0054212bf87fe2eb, deobfuscated_seq=4\n 108→2026-01-28 20:57:41.791 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=0054212bf87fe2eb\n 109→2026-01-28 20:57:41.791 [warning] Replay check passed, proceeding to decryption\n 110→2026-01-28 20:57:41.791 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=4, decrypted_size=68\n 111→2026-01-28 20:57:41.791 [warning] Frame decoded: kind=1, payload_size=48\n 112→2026-01-28 20:57:41.791 [warning] Decrypted 1 frame(s) from session 1\n 113→2026-01-28 20:57:41.791 [warning] Frame kind=1, is_data=true\n 114→2026-01-28 20:57:41.791 [warning] Writing 48 bytes to TUN from session 1\n 115→2026-01-28 20:57:41.791 [warning] TunDevice::write: 48 bytes, IPv6 packet\n 116→2026-01-28 20:57:41.791 [warning] TunDevice::write: SUCCESS 48 bytes written\n 117→2026-01-28 20:57:41.791 [warning] TUN write SUCCESS: 48 bytes\n 118→2026-01-28 20:57:41.793 [warning] Processing packet from session 1 (95.79.92.14:60617), size=120\n 119→2026-01-28 20:57:41.793 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=120, obfuscated_seq=0xd06a47c08a43611e, deobfuscated_seq=5\n 120→2026-01-28 20:57:41.793 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d06a47c08a43611e\n 121→2026-01-28 20:57:41.793 [warning] Replay check passed, proceeding to decryption\n 122→2026-01-28 20:57:41.793 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=5, decrypted_size=96\n 123→2026-01-28 20:57:41.793 [warning] Frame decoded: kind=1, payload_size=76\n 124→2026-01-28 20:57:41.793 [warning] Decrypted 1 frame(s) from session 1\n 125→2026-01-28 20:57:41.793 [warning] Frame kind=1, is_data=true\n 126→2026-01-28 20:57:41.793 [warning] Writing 76 bytes to TUN from session 1\n 127→2026-01-28 20:57:41.793 [warning] TunDevice::write: 76 bytes, IPv6 packet\n 128→2026-01-28 20:57:41.793 [warning] TunDevice::write: SUCCESS 76 bytes written\n 129→2026-01-28 20:57:41.793 [warning] TUN write SUCCESS: 76 bytes\n 130→2026-01-28 20:57:41.862 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 131→2026-01-28 20:57:41.862 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4b24db8f617b76af, deobfuscated_seq=6\n 132→2026-01-28 20:57:41.862 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=4b24db8f617b76af\n 133→2026-01-28 20:57:41.862 [warning] Replay check passed, proceeding to decryption\n 134→2026-01-28 20:57:41.862 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=6, decrypted_size=21\n 135→2026-01-28 20:57:41.862 [warning] Frame decoded: kind=2, payload_size=0\n 136→2026-01-28 20:57:41.862 [warning] Decrypted 1 frame(s) from session 1\n 137→2026-01-28 20:57:41.862 [warning] Frame kind=2, is_data=false\n 138→2026-01-28 20:57:41.862 [warning] Processing ACK frame\n 139→2026-01-28 20:57:41.862 [warning] process_ack called: stream_id=0, ack=3, bitmap=0x00000000, pending_before=1\n 140→2026-01-28 20:57:41.862 [warning] acknowledge_cumulative: ack_seq=3, pending_count=1, pending_range=[3, 3]\n 141→2026-01-28 20:57:41.862 [warning] Acknowledging packet seq=3\n 142→2026-01-28 20:57:41.862 [warning] acknowledge_cumulative done: acked=1 packets\n 143→2026-01-28 20:57:41.862 [warning] process_ack done: pending_after=0\n 144→2026-01-28 20:57:41.863 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n 145→2026-01-28 20:57:41.863 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0xf327f8012d5da3ef, deobfuscated_seq=7\n 146→2026-01-28 20:57:41.863 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=f327f8012d5da3ef\n 147→2026-01-28 20:57:41.863 [warning] Replay check passed, proceeding to decryption\n 148→2026-01-28 20:57:41.863 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=7, decrypted_size=72\n 149→2026-01-28 20:57:41.863 [warning] Frame decoded: kind=1, payload_size=52\n 150→2026-01-28 20:57:41.863 [warning] Decrypted 1 frame(s) from session 1\n 151→2026-01-28 20:57:41.863 [warning] Frame kind=1, is_data=true\n 152→2026-01-28 20:57:41.863 [warning] Writing 52 bytes to TUN from session 1\n 153→2026-01-28 20:57:41.863 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=52\n 154→2026-01-28 20:57:41.863 [warning] TunDevice::write: SUCCESS 52 bytes written\n 155→2026-01-28 20:57:41.863 [warning] TUN write SUCCESS: 52 bytes\n 156→2026-01-28 20:57:41.892 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 157→2026-01-28 20:57:41.892 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xf056c03a5a36e9b6, deobfuscated_seq=8\n 158→2026-01-28 20:57:41.892 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=f056c03a5a36e9b6\n 159→2026-01-28 20:57:41.892 [warning] Replay check passed, proceeding to decryption\n 160→2026-01-28 20:57:41.892 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=8, decrypted_size=80\n 161→2026-01-28 20:57:41.892 [warning] Frame decoded: kind=1, payload_size=60\n 162→2026-01-28 20:57:41.892 [warning] Decrypted 1 frame(s) from session 1\n 163→2026-01-28 20:57:41.892 [warning] Frame kind=1, is_data=true\n 164→2026-01-28 20:57:41.892 [warning] Writing 60 bytes to TUN from session 1\n 165→2026-01-28 20:57:41.892 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=60\n 166→2026-01-28 20:57:41.892 [warning] TunDevice::write: SUCCESS 60 bytes written\n 167→2026-01-28 20:57:41.892 [warning] TUN write SUCCESS: 60 bytes\n 168→2026-01-28 20:57:41.903 [warning] TUN read: 60 bytes, 140.82.121.5 -> 10.8.0.2\n 169→2026-01-28 20:57:41.903 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n 170→2026-01-28 20:57:41.903 [warning] RetransmitBuffer::insert: seq=9, size=104, pending_count=0\n 171→2026-01-28 20:57:41.967 [warning] Processing packet from session 1 (95.79.92.14:60617), size=84\n 172→2026-01-28 20:57:41.967 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=84, obfuscated_seq=0xfc279a5ab16da23e, deobfuscated_seq=9\n 173→2026-01-28 20:57:41.967 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=fc279a5ab16da23e\n 174→2026-01-28 20:57:41.967 [warning] Replay check passed, proceeding to decryption\n 175→2026-01-28 20:57:41.967 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=9, decrypted_size=60\n 176→2026-01-28 20:57:41.967 [warning] Frame decoded: kind=1, payload_size=40\n 177→2026-01-28 20:57:41.967 [warning] Decrypted 1 frame(s) from session 1\n 178→2026-01-28 20:57:41.967 [warning] Frame kind=1, is_data=true\n 179→2026-01-28 20:57:41.967 [warning] Writing 40 bytes to TUN from session 1\n 180→2026-01-28 20:57:41.967 [warning] TunDevice::write: 40 bytes, IPv4 10.8.0.2 -> 224.0.0.22, IHL=6, proto=2, total_len=40\n 181→2026-01-28 20:57:41.967 [warning] TunDevice::write: SUCCESS 40 bytes written\n 182→2026-01-28 20:57:41.967 [warning] TUN write SUCCESS: 40 bytes\n 183→2026-01-28 20:57:41.993 [warning] Processing packet from session 1 (95.79.92.14:60617), size=613\n 184→2026-01-28 20:57:41.993 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=613, obfuscated_seq=0x7649a47697aeb889, deobfuscated_seq=10\n 185→2026-01-28 20:57:41.993 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=7649a47697aeb889\n 186→2026-01-28 20:57:41.993 [warning] Replay check passed, proceeding to decryption\n 187→2026-01-28 20:57:41.993 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=10, decrypted_size=589\n 188→2026-01-28 20:57:41.993 [warning] Frame decoded: kind=1, payload_size=569\n 189→2026-01-28 20:57:41.993 [warning] Decrypted 1 frame(s) from session 1\n 190→2026-01-28 20:57:41.993 [warning] Frame kind=1, is_data=true\n 191→2026-01-28 20:57:41.993 [warning] Writing 569 bytes to TUN from session 1\n 192→2026-01-28 20:57:41.993 [warning] TunDevice::write: 569 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=569\n 193→2026-01-28 20:57:41.993 [warning] TunDevice::write: SUCCESS 569 bytes written\n 194→2026-01-28 20:57:41.993 [warning] TUN write SUCCESS: 569 bytes\n 195→2026-01-28 20:57:42.008 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 196→2026-01-28 20:57:42.008 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xd13ef8ba606e173e, deobfuscated_seq=11\n 197→2026-01-28 20:57:42.008 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d13ef8ba606e173e\n 198→2026-01-28 20:57:42.008 [warning] Replay check passed, proceeding to decryption\n 199→2026-01-28 20:57:42.008 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=11, decrypted_size=21\n 200→2026-01-28 20:57:42.008 [warning] Frame decoded: kind=2, payload_size=0\n 201→2026-01-28 20:57:42.008 [warning] Decrypted 1 frame(s) from session 1\n 202→2026-01-28 20:57:42.008 [warning] Frame kind=2, is_data=false\n 203→2026-01-28 20:57:42.008 [warning] Processing ACK frame\n 204→2026-01-28 20:57:42.008 [warning] process_ack called: stream_id=0, ack=9, bitmap=0x00000000, pending_before=1\n 205→2026-01-28 20:57:42.008 [warning] acknowledge_cumulative: ack_seq=9, pending_count=1, pending_range=[9, 9]\n 206→2026-01-28 20:57:42.008 [warning] Acknowledging packet seq=9\n 207→2026-01-28 20:57:42.008 [warning] acknowledge_cumulative done: acked=1 packets\n 208→2026-01-28 20:57:42.008 [warning] process_ack done: pending_after=0\n 209→2026-01-28 20:57:42.012 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n 210→2026-01-28 20:57:42.012 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0xcedc2bbdf45c50a4, deobfuscated_seq=12\n 211→2026-01-28 20:57:42.012 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cedc2bbdf45c50a4\n 212→2026-01-28 20:57:42.012 [warning] Replay check passed, proceeding to decryption\n 213→2026-01-28 20:57:42.012 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=12, decrypted_size=72\n 214→2026-01-28 20:57:42.012 [warning] Frame decoded: kind=1, payload_size=52\n 215→2026-01-28 20:57:42.012 [warning] Decrypted 1 frame(s) from session 1\n 216→2026-01-28 20:57:42.012 [warning] Frame kind=1, is_data=true\n 217→2026-01-28 20:57:42.012 [warning] Writing 52 bytes to TUN from session 1\n 218→2026-01-28 20:57:42.012 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=52\n 219→2026-01-28 20:57:42.012 [warning] TunDevice::write: SUCCESS 52 bytes written\n 220→2026-01-28 20:57:42.012 [warning] TUN write SUCCESS: 52 bytes\n 221→2026-01-28 20:57:42.022 [warning] TUN read: 52 bytes, 199.232.175.82 -> 10.8.0.2\n 222→2026-01-28 20:57:42.022 [warning] Routing 52 bytes to session 1 (95.79.92.14:60617)\n 223→2026-01-28 20:57:42.022 [warning] RetransmitBuffer::insert: seq=13, size=96, pending_count=0\n 224→2026-01-28 20:57:42.025 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 225→2026-01-28 20:57:42.025 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x43d2252978a047c3, deobfuscated_seq=13\n 226→2026-01-28 20:57:42.025 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=43d2252978a047c3\n 227→2026-01-28 20:57:42.025 [warning] Replay check passed, proceeding to decryption\n 228→2026-01-28 20:57:42.025 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=13, decrypted_size=80\n 229→2026-01-28 20:57:42.025 [warning] Frame decoded: kind=1, payload_size=60\n 230→2026-01-28 20:57:42.025 [warning] Decrypted 1 frame(s) from session 1\n 231→2026-01-28 20:57:42.025 [warning] Frame kind=1, is_data=true\n 232→2026-01-28 20:57:42.026 [warning] Writing 60 bytes to TUN from session 1\n 233→2026-01-28 20:57:42.026 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=60\n 234→2026-01-28 20:57:42.026 [warning] TunDevice::write: SUCCESS 60 bytes written\n 235→2026-01-28 20:57:42.026 [warning] TUN write SUCCESS: 60 bytes\n 236→2026-01-28 20:57:42.026 [warning] TUN read: 145 bytes, 199.232.175.82 -> 10.8.0.2\n 237→2026-01-28 20:57:42.026 [warning] Routing 145 bytes to session 1 (95.79.92.14:60617)\n 238→2026-01-28 20:57:42.026 [warning] RetransmitBuffer::insert: seq=15, size=189, pending_count=1\n 239→2026-01-28 20:57:42.036 [warning] TUN read: 60 bytes, 8.47.69.10 -> 10.8.0.2\n 240→2026-01-28 20:57:42.036 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n 241→2026-01-28 20:57:42.036 [warning] RetransmitBuffer::insert: seq=16, size=104, pending_count=2\n 242→2026-01-28 20:57:42.043 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 243→2026-01-28 20:57:42.043 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xd2a5b93802553c31, deobfuscated_seq=14\n 244→2026-01-28 20:57:42.043 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d2a5b93802553c31\n 245→2026-01-28 20:57:42.043 [warning] Replay check passed, proceeding to decryption\n 246→2026-01-28 20:57:42.043 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=14, decrypted_size=80\n 247→2026-01-28 20:57:42.043 [warning] Frame decoded: kind=1, payload_size=60\n 248→2026-01-28 20:57:42.043 [warning] Decrypted 1 frame(s) from session 1\n 249→2026-01-28 20:57:42.043 [warning] Frame kind=1, is_data=true\n 250→2026-01-28 20:57:42.043 [warning] Writing 60 bytes to TUN from session 1\n 251→2026-01-28 20:57:42.043 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 140.82.112.21, IHL=5, proto=6, total_len=60\n 252→2026-01-28 20:57:42.043 [warning] TunDevice::write: SUCCESS 60 bytes written\n 253→2026-01-28 20:57:42.043 [warning] TUN write SUCCESS: 60 bytes\n 254→2026-01-28 20:57:42.057 [warning] Processing packet from session 1 (95.79.92.14:60617), size=1394\n 255→2026-01-28 20:57:42.057 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=1394, obfuscated_seq=0x796a9aa8fefd7d53, deobfuscated_seq=15\n 256→2026-01-28 20:57:42.057 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=796a9aa8fefd7d53\n 257→2026-01-28 20:57:42.057 [warning] Replay check passed, proceeding to decryption\n 258→2026-01-28 20:57:42.057 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=15, decrypted_size=1370\n 259→2026-01-28 20:57:42.058 [warning] Frame decoded: kind=1, payload_size=1350\n 260→2026-01-28 20:57:42.058 [warning] Decrypted 1 frame(s) from session 1\n 261→2026-01-28 20:57:42.058 [warning] Frame kind=1, is_data=true\n 262→2026-01-28 20:57:42.058 [warning] Writing 1350 bytes to TUN from session 1\n 263→2026-01-28 20:57:42.058 [warning] TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=1400\n 264→2026-01-28 20:57:42.058 [warning] TunDevice::write: SUCCESS 1350 bytes written\n 265→2026-01-28 20:57:42.058 [warning] TUN write SUCCESS: 1350 bytes\n 266→2026-01-28 20:57:42.058 [warning] Processing packet from session 1 (95.79.92.14:60617), size=94\n 267→2026-01-28 20:57:42.058 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=94, obfuscated_seq=0xffa5b52bda97f70f, deobfuscated_seq=16\n 268→2026-01-28 20:57:42.058 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=ffa5b52bda97f70f\n 269→2026-01-28 20:57:42.058 [warning] Replay check passed, proceeding to decryption\n 270→2026-01-28 20:57:42.058 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=16, decrypted_size=70\n 271→2026-01-28 20:57:42.058 [warning] Frame decoded: kind=1, payload_size=50\n 272→2026-01-28 20:57:42.058 [warning] Decrypted 1 frame(s) from session 1\n 273→2026-01-28 20:57:42.058 [warning] Frame kind=1, is_data=true\n 274→2026-01-28 20:57:42.058 [warning] Writing 50 bytes to TUN from session 1\n 275→2026-01-28 20:57:42.058 [warning] TunDevice::write: 50 bytes, IPv6 packet\n 276→2026-01-28 20:57:42.058 [warning] TunDevice::write: SUCCESS 50 bytes written\n 277→2026-01-28 20:57:42.058 [warning] TUN write SUCCESS: 50 bytes\n 278→2026-01-28 20:57:42.074 [warning] Processing packet from session 1 (95.79.92.14:60617), size=367\n 279→2026-01-28 20:57:42.074 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=367, obfuscated_seq=0x73df6fc5970c2ad3, deobfuscated_seq=17\n 280→2026-01-28 20:57:42.074 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=73df6fc5970c2ad3\n 281→2026-01-28 20:57:42.074 [warning] Replay check passed, proceeding to decryption\n 282→2026-01-28 20:57:42.074 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=17, decrypted_size=343\n 283→2026-01-28 20:57:42.074 [warning] Frame decoded: kind=1, payload_size=323\n 284→2026-01-28 20:57:42.074 [warning] Decrypted 1 frame(s) from session 1\n 285→2026-01-28 20:57:42.074 [warning] Frame kind=1, is_data=true\n 286→2026-01-28 20:57:42.074 [warning] Writing 323 bytes to TUN from session 1\n 287→2026-01-28 20:57:42.074 [warning] TunDevice::write: 323 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=323\n 288→2026-01-28 20:57:42.074 [warning] TunDevice::write: SUCCESS 323 bytes written\n 289→2026-01-28 20:57:42.074 [warning] TUN write SUCCESS: 323 bytes\n 290→2026-01-28 20:57:42.085 [warning] TUN read: 64 bytes, 140.82.121.5 -> 10.8.0.2\n 291→2026-01-28 20:57:42.085 [warning] Routing 64 bytes to session 1 (95.79.92.14:60617)\n 292→2026-01-28 20:57:42.085 [warning] RetransmitBuffer::insert: seq=21, size=108, pending_count=3\n 293→2026-01-28 20:57:42.088 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 294→2026-01-28 20:57:42.088 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xd8dabafa29d69972, deobfuscated_seq=18\n 295→2026-01-28 20:57:42.088 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d8dabafa29d69972\n 296→2026-01-28 20:57:42.088 [warning] Replay check passed, proceeding to decryption\n 297→2026-01-28 20:57:42.088 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=18, decrypted_size=80\n 298→2026-01-28 20:57:42.088 [warning] Frame decoded: kind=1, payload_size=60\n 299→2026-01-28 20:57:42.088 [warning] Decrypted 1 frame(s) from session 1\n 300→2026-01-28 20:57:42.088 [warning] Frame kind=1, is_data=true\n 301→2026-01-28 20:57:42.088 [warning] Writing 60 bytes to TUN from session 1\n 302→2026-01-28 20:57:42.088 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 87.240.137.207, IHL=5, proto=6, total_len=60\n 303→2026-01-28 20:57:42.088 [warning] TunDevice::write: SUCCESS 60 bytes written\n 304→2026-01-28 20:57:42.088 [warning] TUN write SUCCESS: 60 bytes\n 305→2026-01-28 20:57:42.098 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 306→2026-01-28 20:57:42.098 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x88f61f644ad119f2, deobfuscated_seq=19\n 307→2026-01-28 20:57:42.098 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=88f61f644ad119f2\n 308→2026-01-28 20:57:42.098 [warning] Replay check passed, proceeding to decryption\n 309→2026-01-28 20:57:42.098 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=19, decrypted_size=80\n 310→2026-01-28 20:57:42.098 [warning] Frame decoded: kind=1, payload_size=60\n 311→2026-01-28 20:57:42.098 [warning] Decrypted 1 frame(s) from session 1\n 312→2026-01-28 20:57:42.098 [warning] Frame kind=1, is_data=true\n 313→2026-01-28 20:57:42.098 [warning] Writing 60 bytes to TUN from session 1\n 314→2026-01-28 20:57:42.098 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 72.153.5.135, IHL=5, proto=6, total_len=60\n 315→2026-01-28 20:57:42.098 [warning] TunDevice::write: SUCCESS 60 bytes written\n 316→2026-01-28 20:57:42.098 [warning] TUN write SUCCESS: 60 bytes\n 317→2026-01-28 20:57:42.117 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n 318→2026-01-28 20:57:42.117 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x405bf7842e448489, deobfuscated_seq=20\n 319→2026-01-28 20:57:42.117 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=405bf7842e448489\n 320→2026-01-28 20:57:42.117 [warning] Replay check passed, proceeding to decryption\n 321→2026-01-28 20:57:42.117 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=20, decrypted_size=80\n 322→2026-01-28 20:57:42.117 [warning] Frame decoded: kind=1, payload_size=60\n 323→2026-01-28 20:57:42.117 [warning] Decrypted 1 frame(s) from session 1\n 324→2026-01-28 20:57:42.117 [warning] Frame kind=1, is_data=true\n 325→2026-01-28 20:57:42.117 [warning] Writing 60 bytes to TUN from session 1\n 326→2026-01-28 20:57:42.117 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 4.207.247.137, IHL=5, proto=6, total_len=60\n 327→2026-01-28 20:57:42.117 [warning] TunDevice::write: SUCCESS 60 bytes written\n 328→2026-01-28 20:57:42.117 [warning] TUN write SUCCESS: 60 bytes\n 329→2026-01-28 20:57:42.127 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 330→2026-01-28 20:57:42.127 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4f632a860ba7d9e0, deobfuscated_seq=21\n 331→2026-01-28 20:57:42.127 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=4f632a860ba7d9e0\n 332→2026-01-28 20:57:42.127 [warning] Replay check passed, proceeding to decryption\n 333→2026-01-28 20:57:42.127 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=21, decrypted_size=21\n 334→2026-01-28 20:57:42.127 [warning] Frame decoded: kind=2, payload_size=0\n 335→2026-01-28 20:57:42.127 [warning] Decrypted 1 frame(s) from session 1\n 336→2026-01-28 20:57:42.127 [warning] Frame kind=2, is_data=false\n 337→2026-01-28 20:57:42.127 [warning] Processing ACK frame\n 338→2026-01-28 20:57:42.127 [warning] process_ack called: stream_id=0, ack=13, bitmap=0x00000000, pending_before=4\n 339→2026-01-28 20:57:42.127 [warning] acknowledge_cumulative: ack_seq=13, pending_count=4, pending_range=[13, 21]\n 340→2026-01-28 20:57:42.127 [warning] Acknowledging packet seq=13\n 341→2026-01-28 20:57:42.127 [warning] acknowledge_cumulative done: acked=1 packets\n 342→2026-01-28 20:57:42.127 [warning] process_ack done: pending_after=3\n 343→2026-01-28 20:57:42.131 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 344→2026-01-28 20:57:42.131 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4af4fb6c1feaeeb9, deobfuscated_seq=22\n 345→2026-01-28 20:57:42.131 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=4af4fb6c1feaeeb9\n 346→2026-01-28 20:57:42.131 [warning] Replay check passed, proceeding to decryption\n 347→2026-01-28 20:57:42.131 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=22, decrypted_size=21\n 348→2026-01-28 20:57:42.131 [warning] Frame decoded: kind=2, payload_size=0\n 349→2026-01-28 20:57:42.131 [warning] Decrypted 1 frame(s) from session 1\n 350→2026-01-28 20:57:42.131 [warning] Frame kind=2, is_data=false\n 351→2026-01-28 20:57:42.131 [warning] Processing ACK frame\n 352→2026-01-28 20:57:42.131 [warning] process_ack called: stream_id=0, ack=15, bitmap=0x00000000, pending_before=3\n 353→2026-01-28 20:57:42.131 [warning] acknowledge_cumulative: ack_seq=15, pending_count=3, pending_range=[15, 21]\n 354→2026-01-28 20:57:42.131 [warning] Acknowledging packet seq=15\n 355→2026-01-28 20:57:42.131 [warning] acknowledge_cumulative done: acked=1 packets\n 356→2026-01-28 20:57:42.131 [warning] process_ack done: pending_after=2\n 357→2026-01-28 20:57:42.140 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 358→2026-01-28 20:57:42.140 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x1974f21262a04209, deobfuscated_seq=23\n 359→2026-01-28 20:57:42.140 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=1974f21262a04209\n 360→2026-01-28 20:57:42.140 [warning] Replay check passed, proceeding to decryption\n 361→2026-01-28 20:57:42.140 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=23, decrypted_size=21\n 362→2026-01-28 20:57:42.140 [warning] Frame decoded: kind=2, payload_size=0\n 363→2026-01-28 20:57:42.140 [warning] Decrypted 1 frame(s) from session 1\n 364→2026-01-28 20:57:42.140 [warning] Frame kind=2, is_data=false\n 365→2026-01-28 20:57:42.140 [warning] Processing ACK frame\n 366→2026-01-28 20:57:42.140 [warning] process_ack called: stream_id=0, ack=16, bitmap=0x00000000, pending_before=2\n 367→2026-01-28 20:57:42.140 [warning] acknowledge_cumulative: ack_seq=16, pending_count=2, pending_range=[16, 21]\n 368→2026-01-28 20:57:42.140 [warning] Acknowledging packet seq=16\n 369→2026-01-28 20:57:42.140 [warning] acknowledge_cumulative done: acked=1 packets\n 370→2026-01-28 20:57:42.140 [warning] process_ack done: pending_after=1\n 371→2026-01-28 20:57:42.140 [warning] TUN read: 52 bytes, 4.207.247.137 -> 10.8.0.2\n 372→2026-01-28 20:57:42.140 [warning] Routing 52 bytes to session 1 (95.79.92.14:60617)\n 373→2026-01-28 20:57:42.140 [warning] RetransmitBuffer::insert: seq=25, size=96, pending_count=1\n 374→2026-01-28 20:57:42.140 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n 375→2026-01-28 20:57:42.140 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0x839de0a6607c0c7f, deobfuscated_seq=24\n 376→2026-01-28 20:57:42.140 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=839de0a6607c0c7f\n 377→2026-01-28 20:57:42.140 [warning] Replay check passed, proceeding to decryption\n 378→2026-01-28 20:57:42.140 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=24, decrypted_size=72\n 379→2026-01-28 20:57:42.140 [warning] Frame decoded: kind=1, payload_size=52\n 380→2026-01-28 20:57:42.140 [warning] Decrypted 1 frame(s) from session 1\n 381→2026-01-28 20:57:42.140 [warning] Frame kind=1, is_data=true\n 382→2026-01-28 20:57:42.140 [warning] Writing 52 bytes to TUN from session 1\n 383→2026-01-28 20:57:42.140 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=52\n 384→2026-01-28 20:57:42.141 [warning] TunDevice::write: SUCCESS 52 bytes written\n 385→2026-01-28 20:57:42.141 [warning] TUN write SUCCESS: 52 bytes\n 386→2026-01-28 20:57:42.150 [warning] Processing packet from session 1 (95.79.92.14:60617), size=1394\n 387→2026-01-28 20:57:42.150 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=1394, obfuscated_seq=0xba69e6fd1ea9be20, deobfuscated_seq=25\n 388→2026-01-28 20:57:42.150 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=ba69e6fd1ea9be20\n 389→2026-01-28 20:57:42.150 [warning] Replay check passed, proceeding to decryption\n 390→2026-01-28 20:57:42.150 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=25, decrypted_size=1370\n 391→2026-01-28 20:57:42.150 [warning] Frame decoded: kind=1, payload_size=1350\n 392→2026-01-28 20:57:42.150 [warning] Decrypted 1 frame(s) from session 1\n 393→2026-01-28 20:57:42.150 [warning] Frame kind=1, is_data=true\n 394→2026-01-28 20:57:42.150 [warning] Writing 1350 bytes to TUN from session 1\n 395→2026-01-28 20:57:42.150 [warning] TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=1400\n 396→2026-01-28 20:57:42.150 [warning] TunDevice::write: SUCCESS 1350 bytes written\n 397→2026-01-28 20:57:42.150 [warning] TUN write SUCCESS: 1350 bytes\n 398→2026-01-28 20:57:42.150 [warning] Processing packet from session 1 (95.79.92.14:60617), size=94\n 399→2026-01-28 20:57:42.150 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=94, obfuscated_seq=0xa7ba21975d7b6d27, deobfuscated_seq=26\n 400→2026-01-28 20:57:42.150 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=a7ba21975d7b6d27\n 401→2026-01-28 20:57:42.150 [warning] Replay check passed, proceeding to decryption\n 402→2026-01-28 20:57:42.150 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=26, decrypted_size=70\n 403→2026-01-28 20:57:42.150 [warning] Frame decoded: kind=1, payload_size=50\n 404→2026-01-28 20:57:42.150 [warning] Decrypted 1 frame(s) from session 1\n 405→2026-01-28 20:57:42.150 [warning] Frame kind=1, is_data=true\n 406→2026-01-28 20:57:42.150 [warning] Writing 50 bytes to TUN from session 1\n 407→2026-01-28 20:57:42.150 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n 408→2026-01-28 20:57:42.150 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n 409→2026-01-28 20:57:42.150 [error] Failed to write to TUN: Invalid argument\n 410→2026-01-28 20:57:42.167 [warning] Processing packet from session 1 (95.79.92.14:60617), size=778\n 411→2026-01-28 20:57:42.167 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=778, obfuscated_seq=0xcceed96b804c6d4d, deobfuscated_seq=27\n 412→2026-01-28 20:57:42.167 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cceed96b804c6d4d\n 413→2026-01-28 20:57:42.167 [warning] Replay check passed, proceeding to decryption\n 414→2026-01-28 20:57:42.167 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=27, decrypted_size=754\n 415→2026-01-28 20:57:42.167 [warning] Frame decoded: kind=1, payload_size=734\n 416→2026-01-28 20:57:42.167 [warning] Decrypted 1 frame(s) from session 1\n 417→2026-01-28 20:57:42.167 [warning] Frame kind=1, is_data=true\n 418→2026-01-28 20:57:42.167 [warning] Writing 734 bytes to TUN from session 1\n 419→2026-01-28 20:57:42.167 [warning] TunDevice::write: 734 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=734\n 420→2026-01-28 20:57:42.167 [warning] TunDevice::write: SUCCESS 734 bytes written\n 421→2026-01-28 20:57:42.167 [warning] TUN write SUCCESS: 734 bytes\n 422→2026-01-28 20:57:42.178 [warning] TUN read: 64 bytes, 8.47.69.10 -> 10.8.0.2\n 423→2026-01-28 20:57:42.178 [warning] Routing 64 bytes to session 1 (95.79.92.14:60617)\n 424→2026-01-28 20:57:42.178 [warning] RetransmitBuffer::insert: seq=30, size=108, pending_count=2\n 425→2026-01-28 20:57:42.188 [warning] TUN read: 60 bytes, 87.240.137.207 -> 10.8.0.2\n 426→2026-01-28 20:57:42.188 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n 427→2026-01-28 20:57:42.188 [warning] RetransmitBuffer::insert: seq=31, size=104, pending_count=3\n 428→2026-01-28 20:57:42.190 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 429→2026-01-28 20:57:42.190 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x91c9ebfd06f3c1c8, deobfuscated_seq=28\n 430→2026-01-28 20:57:42.190 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=91c9ebfd06f3c1c8\n 431→2026-01-28 20:57:42.190 [warning] Replay check passed, proceeding to decryption\n 432→2026-01-28 20:57:42.190 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=28, decrypted_size=21\n 433→2026-01-28 20:57:42.190 [warning] Frame decoded: kind=2, payload_size=0\n 434→2026-01-28 20:57:42.190 [warning] Decrypted 1 frame(s) from session 1\n 435→2026-01-28 20:57:42.190 [warning] Frame kind=2, is_data=false\n 436→2026-01-28 20:57:42.190 [warning] Processing ACK frame\n 437→2026-01-28 20:57:42.190 [warning] process_ack called: stream_id=0, ack=21, bitmap=0x00000000, pending_before=4\n 438→2026-01-28 20:57:42.190 [warning] acknowledge_cumulative: ack_seq=21, pending_count=4, pending_range=[21, 31]\n 439→2026-01-28 20:57:42.190 [warning] Acknowledging packet seq=21\n 440→2026-01-28 20:57:42.190 [warning] acknowledge_cumulative done: acked=1 packets\n 441→2026-01-28 20:57:42.190 [warning] process_ack done: pending_after=3\n 442→2026-01-28 20:57:42.190 [warning] TUN read: 60 bytes, 140.82.112.21 -> 10.8.0.2\n 443→2026-01-28 20:57:42.190 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n 444→2026-01-28 20:57:42.190 [warning] RetransmitBuffer::insert: seq=32, size=104, pending_count=3\n 445→2026-01-28 20:57:42.190 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n 446→2026-01-28 20:57:42.190 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0xfa17f5f808b0d092, deobfuscated_seq=29\n 447→2026-01-28 20:57:42.190 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=fa17f5f808b0d092\n 448→2026-01-28 20:57:42.190 [warning] Replay check passed, proceeding to decryption\n 449→2026-01-28 20:57:42.190 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=29, decrypted_size=72\n 450→2026-01-28 20:57:42.190 [warning] Frame decoded: kind=1, payload_size=52\n 451→2026-01-28 20:57:42.190 [warning] Decrypted 1 frame(s) from session 1\n 452→2026-01-28 20:57:42.190 [warning] Frame kind=1, is_data=true\n 453→2026-01-28 20:57:42.190 [warning] Writing 52 bytes to TUN from session 1\n 454→2026-01-28 20:57:42.190 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=52\n 455→2026-01-28 20:57:42.190 [warning] TunDevice::write: SUCCESS 52 bytes written\n 456→2026-01-28 20:57:42.190 [warning] TUN write SUCCESS: 52 bytes\n 457→2026-01-28 20:57:42.201 [warning] TUN read: 52 bytes, 72.153.5.135 -> 10.8.0.2\n 458→2026-01-28 20:57:42.201 [warning] Routing 52 bytes to session 1 (95.79.92.14:60617)\n 459→2026-01-28 20:57:42.201 [warning] RetransmitBuffer::insert: seq=34, size=96, pending_count=4\n 460→2026-01-28 20:57:42.238 [warning] Processing packet from session 1 (95.79.92.14:60617), size=1394\n 461→2026-01-28 20:57:42.239 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=1394, obfuscated_seq=0x36422b431a3127e9, deobfuscated_seq=30\n 462→2026-01-28 20:57:42.239 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=36422b431a3127e9\n 463→2026-01-28 20:57:42.239 [warning] Replay check passed, proceeding to decryption\n 464→2026-01-28 20:57:42.239 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=30, decrypted_size=1370\n 465→2026-01-28 20:57:42.239 [warning] Frame decoded: kind=1, payload_size=1350\n 466→2026-01-28 20:57:42.239 [warning] Decrypted 1 frame(s) from session 1\n 467→2026-01-28 20:57:42.239 [warning] Frame kind=1, is_data=true\n 468→2026-01-28 20:57:42.239 [warning] Writing 1350 bytes to TUN from session 1\n 469→2026-01-28 20:57:42.239 [warning] TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=1400\n 470→2026-01-28 20:57:42.239 [warning] TunDevice::write: SUCCESS 1350 bytes written\n 471→2026-01-28 20:57:42.239 [warning] TUN write SUCCESS: 1350 bytes\n 472→2026-01-28 20:57:42.239 [warning] Processing packet from session 1 (95.79.92.14:60617), size=94\n 473→2026-01-28 20:57:42.239 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=94, obfuscated_seq=0x73112e0333a2aa6a, deobfuscated_seq=31\n 474→2026-01-28 20:57:42.239 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=73112e0333a2aa6a\n 475→2026-01-28 20:57:42.239 [warning] Replay check passed, proceeding to decryption\n 476→2026-01-28 20:57:42.239 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=31, decrypted_size=70\n 477→2026-01-28 20:57:42.239 [warning] Frame decoded: kind=1, payload_size=50\n 478→2026-01-28 20:57:42.239 [warning] Decrypted 1 frame(s) from session 1\n 479→2026-01-28 20:57:42.239 [warning] Frame kind=1, is_data=true\n 480→2026-01-28 20:57:42.239 [warning] Writing 50 bytes to TUN from session 1\n 481→2026-01-28 20:57:42.239 [warning] TunDevice::write: 50 bytes, IPv6 packet\n 482→2026-01-28 20:57:42.239 [warning] TunDevice::write: SUCCESS 50 bytes written\n 483→2026-01-28 20:57:42.239 [warning] TUN write SUCCESS: 50 bytes\n 484→2026-01-28 20:57:42.244 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n 485→2026-01-28 20:57:42.244 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x32a44f224ecb7225, deobfuscated_seq=32\n 486→2026-01-28 20:57:42.245 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=32a44f224ecb7225\n 487→2026-01-28 20:57:42.245 [warning] Replay check passed, proceeding to decryption\n 488→2026-01-28 20:57:42.245 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=32, decrypted_size=21\n 489→2026-01-28 20:57:42.245 [warning] Frame decoded: kind=2, payload_size=0\n 490→2026-01-28 20:57:42.245 [warning] Decrypted 1 frame(s) from session 1\n 491→2026-01-28 20:57:42.245 [warning] Frame kind=2, is_data=false\n 492→2026-01-28 20:57:42.245 [warning] Processing ACK frame\n 493→2026-01-28 20:57:42.245 [warning] process_ack called: stream_id=0, ack=25, bitmap=0x00000000, pending_before=5\n 494→2026-01-28 20:57:42.245 [warning] acknowledge_cumulative: ack_seq=25, pending_count=5, pending_range=[25, 34]\n 495→2026-01-28 20:57:42.245 [warning] Acknowledging packet seq=25\n 496→2026-01-28 20:57:42.245 [warning] acknowledge_cumulative done: acked=1 packets\n 497→2026-01-28 20:57:42.245 [warning] process_ack done: pending_after=4\n 498→2026-01-28 20:57:42.246 [warning] Processing packet from session 1 (95.79.92.14:60617), size=84\n 499→2026-01-28 20:57:42.246 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=84, obfuscated_seq=0x8a3c120d91eea32a, deobfuscated_seq=33\n 500→2026-01-28 20:57:42.246 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=8a3c120d91eea32a\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"6ac110f2-5246-48ec-bb5d-4c5387d4b6ad","uuid":"be4462bf-441d-4ca9-882f-00e618e82b88","tool_use_result":{"type":"text","file":{"filePath":"/tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/server_logs_latest.txt","content":"Server Configuration\n--------------------\n Listen Address : 0.0.0.0:4433\n Max Clients : 253\n Session Timeout : 300s\n TUN Device : veil0\n TUN IP : 10.8.0.1\n IP Pool : 10.8.0.2 - 10.8.0.254\n NAT Enabled : Yes\n External Interface : ens3\n Verbose : Yes\n Daemon Mode : No\n\n2026-01-28 20:56:46.186 [info] VEIL Server starting...\n[OK] Pre-shared key loaded\n[i] Opening TUN device...\n2026-01-28 20:56:46.187 [info] Created TUN device: veil0\n2026-01-28 20:56:46.187 [info] Set IP address 10.8.0.1 on veil0\n2026-01-28 20:56:46.188 [info] Set netmask 255.255.255.0 on veil0\n2026-01-28 20:56:46.189 [info] Set MTU 1400 on veil0\n2026-01-28 20:56:46.190 [info] Brought interface veil0 up\n[OK] TUN device veil0 opened with IP 10.8.0.1\n2026-01-28 20:56:46.190 [info] TUN device veil0 opened with IP 10.8.0.1\n[i] Configuring NAT...\n2026-01-28 20:56:46.197 [info] IP forwarding enabled\n2026-01-28 20:56:46.207 [info] NAT configured: veil0 -> ens3 (subnet: 10.8.0.0/24, mode: MASQUERADE)\n[OK] NAT configured: veil0 -> ens3\n2026-01-28 20:56:46.207 [info] NAT configured: veil0 -> ens3\n[i] Opening UDP socket...\n[OK] Listening on 0.0.0.0:4433\n2026-01-28 20:56:46.207 [info] Listening on 0.0.0.0:4433\n2026-01-28 20:56:46.207 [info] Session table initialized with 253 available IPs\n2026-01-28 20:56:46.207 [info] Default signal handlers installed\n\n\nServer Running\n--------------\n● Server is ready and accepting connections\n Press Ctrl+C to stop\n\n2026-01-28 20:56:46.207 [info] Server running, accepting connections...\n2026-01-28 20:57:41.204 [info] TransportSession created: session_id=11598378240004569761\n2026-01-28 20:57:41.204 [info] send_key_fp=c3d53afa, send_nonce_fp=19f54ee0\n2026-01-28 20:57:41.204 [info] recv_key_fp=4caa4770, recv_nonce_fp=d90c12d6\n2026-01-28 20:57:41.204 [info] send_seq_obfuscation_key_fp=e25c8a4c, recv_seq_obfuscation_key_fp=40193c80\n2026-01-28 20:57:41.204 [info] Created session 1 for 95.79.92.14:60617 with tunnel IP 10.8.0.254\n2026-01-28 20:57:41.204 [info] New client connected from 95.79.92.14:60617, session 1\n● Client connected: 95.79.92.14:60617 (session 1)\n2026-01-28 20:57:41.687 [warning] Processing packet from session 1 (95.79.92.14:60617), size=317\n2026-01-28 20:57:41.688 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=317, obfuscated_seq=0xcbbaf2403e5260a2, deobfuscated_seq=0\n2026-01-28 20:57:41.688 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cbbaf2403e5260a2\n2026-01-28 20:57:41.688 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.688 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=0, decrypted_size=293\n2026-01-28 20:57:41.688 [warning] Frame decoded: kind=1, payload_size=273\n2026-01-28 20:57:41.688 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.688 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.688 [info] Updated tunnel IP for session 1 from 10.8.0.2 to 10.8.0.2 (client uses own IP)\n2026-01-28 20:57:41.688 [warning] Writing 273 bytes to TUN from session 1\n2026-01-28 20:57:41.688 [warning] TunDevice::write: 273 bytes, IPv4 10.8.0.2 -> 10.8.0.255, IHL=5, proto=17, total_len=273\n2026-01-28 20:57:41.688 [warning] TunDevice::write: SUCCESS 273 bytes written\n2026-01-28 20:57:41.688 [warning] TUN write SUCCESS: 273 bytes\n2026-01-28 20:57:41.713 [warning] Processing packet from session 1 (95.79.92.14:60617), size=114\n2026-01-28 20:57:41.713 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=114, obfuscated_seq=0x80f3db6a38cef76e, deobfuscated_seq=1\n2026-01-28 20:57:41.713 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=80f3db6a38cef76e\n2026-01-28 20:57:41.713 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.713 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=1, decrypted_size=90\n2026-01-28 20:57:41.713 [warning] Frame decoded: kind=1, payload_size=70\n2026-01-28 20:57:41.713 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.713 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.713 [warning] Writing 70 bytes to TUN from session 1\n2026-01-28 20:57:41.713 [warning] TunDevice::write: 70 bytes, IPv4 10.8.0.2 -> 10.8.0.255, IHL=5, proto=17, total_len=70\n2026-01-28 20:57:41.713 [warning] TunDevice::write: SUCCESS 70 bytes written\n2026-01-28 20:57:41.713 [warning] TUN write SUCCESS: 70 bytes\n2026-01-28 20:57:41.728 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:41.728 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x04b3ca006c470831, deobfuscated_seq=2\n2026-01-28 20:57:41.728 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=04b3ca006c470831\n2026-01-28 20:57:41.728 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.728 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=2, decrypted_size=80\n2026-01-28 20:57:41.728 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:41.728 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.728 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.728 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:41.728 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:41.728 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:41.728 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:41.758 [warning] TUN read: 60 bytes, 199.232.175.82 -> 10.8.0.2\n2026-01-28 20:57:41.758 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:41.758 [warning] RetransmitBuffer::insert: seq=3, size=104, pending_count=0\n2026-01-28 20:57:41.774 [warning] Processing packet from session 1 (95.79.92.14:60617), size=108\n2026-01-28 20:57:41.774 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=108, obfuscated | |
| [2026-01-28T20:03:59.447Z] [INFO] _seq=0x627b5ff02c353a7d, deobfuscated_seq=3\n2026-01-28 20:57:41.774 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=627b5ff02c353a7d\n2026-01-28 20:57:41.774 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.774 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=3, decrypted_size=84\n2026-01-28 20:57:41.774 [warning] Frame decoded: kind=1, payload_size=64\n2026-01-28 20:57:41.774 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.774 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.774 [warning] Writing 64 bytes to TUN from session 1\n2026-01-28 20:57:41.774 [warning] TunDevice::write: 64 bytes, IPv6 packet\n2026-01-28 20:57:41.774 [warning] TunDevice::write: SUCCESS 64 bytes written\n2026-01-28 20:57:41.774 [warning] TUN write SUCCESS: 64 bytes\n2026-01-28 20:57:41.790 [warning] Processing packet from session 1 (95.79.92.14:60617), size=317\n2026-01-28 20:57:41.790 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=317, obfuscated_seq=0xcbbaf2403e5260a2, deobfuscated_seq=0\n2026-01-28 20:57:41.790 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cbbaf2403e5260a2\n2026-01-28 20:57:41.790 [warning] Packet replay detected or out of window: sequence=0, highest=3\n2026-01-28 20:57:41.790 [warning] Failed to decrypt packet from session 1 (95.79.92.14:60617), size=317. Possible causes: key mismatch, replay attack, or corrupted packet.\n2026-01-28 20:57:41.791 [warning] Processing packet from session 1 (95.79.92.14:60617), size=92\n2026-01-28 20:57:41.791 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=92, obfuscated_seq=0x0054212bf87fe2eb, deobfuscated_seq=4\n2026-01-28 20:57:41.791 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=0054212bf87fe2eb\n2026-01-28 20:57:41.791 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.791 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=4, decrypted_size=68\n2026-01-28 20:57:41.791 [warning] Frame decoded: kind=1, payload_size=48\n2026-01-28 20:57:41.791 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.791 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.791 [warning] Writing 48 bytes to TUN from session 1\n2026-01-28 20:57:41.791 [warning] TunDevice::write: 48 bytes, IPv6 packet\n2026-01-28 20:57:41.791 [warning] TunDevice::write: SUCCESS 48 bytes written\n2026-01-28 20:57:41.791 [warning] TUN write SUCCESS: 48 bytes\n2026-01-28 20:57:41.793 [warning] Processing packet from session 1 (95.79.92.14:60617), size=120\n2026-01-28 20:57:41.793 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=120, obfuscated_seq=0xd06a47c08a43611e, deobfuscated_seq=5\n2026-01-28 20:57:41.793 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d06a47c08a43611e\n2026-01-28 20:57:41.793 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.793 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=5, decrypted_size=96\n2026-01-28 20:57:41.793 [warning] Frame decoded: kind=1, payload_size=76\n2026-01-28 20:57:41.793 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.793 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.793 [warning] Writing 76 bytes to TUN from session 1\n2026-01-28 20:57:41.793 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:41.793 [warning] TunDevice::write: SUCCESS 76 bytes written\n2026-01-28 20:57:41.793 [warning] TUN write SUCCESS: 76 bytes\n2026-01-28 20:57:41.862 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:41.862 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4b24db8f617b76af, deobfuscated_seq=6\n2026-01-28 20:57:41.862 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=4b24db8f617b76af\n2026-01-28 20:57:41.862 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.862 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=6, decrypted_size=21\n2026-01-28 20:57:41.862 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:41.862 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.862 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:41.862 [warning] Processing ACK frame\n2026-01-28 20:57:41.862 [warning] process_ack called: stream_id=0, ack=3, bitmap=0x00000000, pending_before=1\n2026-01-28 20:57:41.862 [warning] acknowledge_cumulative: ack_seq=3, pending_count=1, pending_range=[3, 3]\n2026-01-28 20:57:41.862 [warning] Acknowledging packet seq=3\n2026-01-28 20:57:41.862 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:41.862 [warning] process_ack done: pending_after=0\n2026-01-28 20:57:41.863 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n2026-01-28 20:57:41.863 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0xf327f8012d5da3ef, deobfuscated_seq=7\n2026-01-28 20:57:41.863 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=f327f8012d5da3ef\n2026-01-28 20:57:41.863 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.863 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=7, decrypted_size=72\n2026-01-28 20:57:41.863 [warning] Frame decoded: kind=1, payload_size=52\n2026-01-28 20:57:41.863 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.863 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.863 [warning] Writing 52 bytes to TUN from session 1\n2026-01-28 20:57:41.863 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=52\n2026-01-28 20:57:41.863 [warning] TunDevice::write: SUCCESS 52 bytes written\n2026-01-28 20:57:41.863 [warning] TUN write SUCCESS: 52 bytes\n2026-01-28 20:57:41.892 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:41.892 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xf056c03a5a36e9b6, deobfuscated_seq=8\n2026-01-28 20:57:41.892 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=f056c03a5a36e9b6\n2026-01-28 20:57:41.892 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.892 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=8, decrypted_size=80\n2026-01-28 20:57:41.892 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:41.892 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.892 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.892 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:41.892 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:41.892 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:41.892 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:41.903 [warning] TUN read: 60 bytes, 140.82.121.5 -> 10.8.0.2\n2026-01-28 20:57:41.903 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:41.903 [warning] RetransmitBuffer::insert: seq=9, size=104, pending_count=0\n2026-01-28 20:57:41.967 [warning] Processing packet from session 1 (95.79.92.14:60617), size=84\n2026-01-28 20:57:41.967 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=84, obfuscated_seq=0xfc279a5ab16da23e, deobfuscated_seq=9\n2026-01-28 20:57:41.967 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=fc279a5ab16da23e\n2026-01-28 20:57:41.967 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.967 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=9, decrypted_size=60\n2026-01-28 20:57:41.967 [warning] Frame decoded: kind=1, payload_size=40\n2026-01-28 20:57:41.967 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.967 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.967 [warning] Writing 40 bytes to TUN from session 1\n2026-01-28 20:57:41.967 [warning] TunDevice::write: 40 bytes, IPv4 10.8.0.2 -> 224.0.0.22, IHL=6, proto=2, total_len=40\n2026-01-28 20:57:41.967 [warning] TunDevice::write: SUCCESS 40 bytes written\n2026-01-28 20:57:41.967 [warning] TUN write SUCCESS: 40 bytes\n2026-01-28 20:57:41.993 [warning] Processing packet from session 1 (95.79.92.14:60617), size=613\n2026-01-28 20:57:41.993 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=613, obfuscated_seq=0x7649a47697aeb889, deobfuscated_seq=10\n2026-01-28 20:57:41.993 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=7649a47697aeb889\n2026-01-28 20:57:41.993 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:41.993 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=10, decrypted_size=589\n2026-01-28 20:57:41.993 [warning] Frame decoded: kind=1, payload_size=569\n2026-01-28 20:57:41.993 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:41.993 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:41.993 [warning] Writing 569 bytes to TUN from session 1\n2026-01-28 20:57:41.993 [warning] TunDevice::write: 569 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=569\n2026-01-28 20:57:41.993 [warning] TunDevice::write: SUCCESS 569 bytes written\n2026-01-28 20:57:41.993 [warning] TUN write SUCCESS: 569 bytes\n2026-01-28 20:57:42.008 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:42.008 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0xd13ef8ba606e173e, deobfuscated_seq=11\n2026-01-28 20:57:42.008 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d13ef8ba606e173e\n2026-01-28 20:57:42.008 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.008 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=11, decrypted_size=21\n2026-01-28 20:57:42.008 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:42.008 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.008 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:42.008 [warning] Processing ACK frame\n2026-01-28 20:57:42.008 [warning] process_ack called: stream_id=0, ack=9, bitmap=0x00000000, pending_before=1\n2026-01-28 20:57:42.008 [warning] acknowledge_cumulative: ack_seq=9, pending_count=1, pending_range=[9, 9]\n2026-01-28 20:57:42.008 [warning] Acknowledging packet seq=9\n2026-01-28 20:57:42.008 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:42.008 [warning] process_ack done: pending_after=0\n2026-01-28 20:57:42.012 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n2026-01-28 20:57:42.012 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0xcedc2bbdf45c50a4, deobfuscated_seq=12\n2026-01-28 20:57:42.012 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cedc2bbdf45c50a4\n2026-01-28 20:57:42.012 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.012 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=12, decrypted_size=72\n2026-01-28 20:57:42.012 [warning] Frame decoded: kind=1, payload_size=52\n2026-01-28 20:57:42.012 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.012 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.012 [warning] Writing 52 bytes to TUN from session 1\n2026-01-28 20:57:42.012 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=52\n2026-01-28 20:57:42.012 [warning] TunDevice::write: SUCCESS 52 bytes written\n2026-01-28 20:57:42.012 [warning] TUN write SUCCESS: 52 bytes\n2026-01-28 20:57:42.022 [warning] TUN read: 52 bytes, 199.232.175.82 -> 10.8.0.2\n2026-01-28 20:57:42.022 [warning] Routing 52 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.022 [warning] RetransmitBuffer::insert: seq=13, size=96, pending_count=0\n2026-01-28 20:57:42.025 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:42.025 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x43d2252978a047c3, deobfuscated_seq=13\n2026-01-28 20:57:42.025 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=43d2252978a047c3\n2026-01-28 20:57:42.025 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.025 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=13, decrypted_size=80\n2026-01-28 20:57:42.025 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:42.025 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.025 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.026 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:42.026 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:42.026 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:42.026 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:42.026 [warning] TUN read: 145 bytes, 199.232.175.82 -> 10.8.0.2\n2026-01-28 20:57:42.026 [warning] Routing 145 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.026 [warning] RetransmitBuffer::insert: seq=15, size=189, pending_count=1\n2026-01-28 20:57:42.036 [warning] TUN read: 60 bytes, 8.47.69.10 -> 10.8.0.2\n2026-01-28 20:57:42.036 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.036 [warning] RetransmitBuffer::insert: seq=16, size=104, pending_count=2\n2026-01-28 20:57:42.043 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:42.043 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xd2a5b93802553c31, deobfuscated_seq=14\n2026-01-28 20:57:42.043 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d2a5b93802553c31\n2026-01-28 20:57:42.043 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.043 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=14, decrypted_size=80\n2026-01-28 20:57:42.043 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:42.043 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.043 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.043 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:42.043 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 140.82.112.21, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:42.043 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:42.043 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:42.057 [warning] Processing packet from session 1 (95.79.92.14:60617), size=1394\n2026-01-28 20:57:42.057 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=1394, obfuscated_seq=0x796a9aa8fefd7d53, deobfuscated_seq=15\n2026-01-28 20:57:42.057 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=796a9aa8fefd7d53\n2026-01-28 20:57:42.057 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.057 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=15, decrypted_size=1370\n2026-01-28 20:57:42.058 [warning] Frame decoded: kind=1, payload_size=1350\n2026-01-28 20:57:42.058 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.058 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.058 [warning] Writing 1350 bytes to TUN from session 1\n2026-01-28 20:57:42.058 [warning] TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=1400\n2026-01-28 20:57:42.058 [warning] TunDevice::write: SUCCESS 1350 bytes written\n2026-01-28 20:57:42.058 [warning] TUN write SUCCESS: 1350 bytes\n2026-01-28 20:57:42.058 [warning] Processing packet from session 1 (95.79.92.14:60617), size=94\n2026-01-28 20:57:42.058 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=94, obfuscated_seq=0xffa5b52bda97f70f, deobfuscated_seq=16\n2026-01-28 20:57:42.058 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=ffa5b52bda97f70f\n2026-01-28 20:57:42.058 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.058 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=16, decrypted_size=70\n2026-01-28 20:57:42.058 [warning] Frame decoded: kind=1, payload_size=50\n2026-01-28 20:57:42.058 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.058 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.058 [warning] Writing 50 bytes to TUN from session 1\n2026-01-28 20:57:42.058 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.058 [warning] TunDevice::write: SUCCESS 50 bytes written\n2026-01-28 20:57:42.058 [warning] TUN write SUCCESS: 50 bytes\n2026-01-28 20:57:42.074 [warning] Processing packet from session 1 (95.79.92.14:60617), size=367\n2026-01-28 20:57:42.074 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=367, obfuscated_seq=0x73df6fc5970c2ad3, deobfuscated_seq=17\n2026-01-28 20:57:42.074 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=73df6fc5970c2ad3\n2026-01-28 20:57:42.074 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.074 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=17, decrypted_size=343\n2026-01-28 20:57:42.074 [warning] Frame decoded: kind=1, payload_size=323\n2026-01-28 20:57:42.074 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.074 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.074 [warning] Writing 323 bytes to TUN from session 1\n2026-01-28 20:57:42.074 [warning] TunDevice::write: 323 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=323\n2026-01-28 20:57:42.074 [warning] TunDevice::write: SUCCESS 323 bytes written\n2026-01-28 20:57:42.074 [warning] TUN write SUCCESS: 323 bytes\n2026-01-28 20:57:42.085 [warning] TUN read: 64 bytes, 140.82.121.5 -> 10.8.0.2\n2026-01-28 20:57:42.085 [warning] Routing 64 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.085 [warning] RetransmitBuffer::insert: seq=21, size=108, pending_count=3\n2026-01-28 20:57:42.088 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:42.088 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0xd8dabafa29d69972, deobfuscated_seq=18\n2026-01-28 20:57:42.088 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=d8dabafa29d69972\n2026-01-28 20:57:42.088 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.088 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=18, decrypted_size=80\n2026-01-28 20:57:42.088 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:42.088 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.088 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.088 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:42.088 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 87.240.137.207, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:42.088 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:42.088 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:42.098 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:42.098 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x88f61f644ad119f2, deobfuscated_seq=19\n2026-01-28 20:57:42.098 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=88f61f644ad119f2\n2026-01-28 20:57:42.098 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.098 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=19, decrypted_size=80\n2026-01-28 20:57:42.098 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:42.098 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.098 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.098 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:42.098 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 72.153.5.135, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:42.098 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:42.098 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:42.117 [warning] Processing packet from session 1 (95.79.92.14:60617), size=104\n2026-01-28 20:57:42.117 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=104, obfuscated_seq=0x405bf7842e448489, deobfuscated_seq=20\n2026-01-28 20:57:42.117 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=405bf7842e448489\n2026-01-28 20:57:42.117 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.117 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=20, decrypted_size=80\n2026-01-28 20:57:42.117 [warning] Frame decoded: kind=1, payload_size=60\n2026-01-28 20:57:42.117 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.117 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.117 [warning] Writing 60 bytes to TUN from session 1\n2026-01-28 20:57:42.117 [warning] TunDevice::write: 60 bytes, IPv4 10.8.0.2 -> 4.207.247.137, IHL=5, proto=6, total_len=60\n2026-01-28 20:57:42.117 [warning] TunDevice::write: SUCCESS 60 bytes written\n2026-01-28 20:57:42.117 [warning] TUN write SUCCESS: 60 bytes\n2026-01-28 20:57:42.127 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:42.127 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4f632a860ba7d9e0, deobfuscated_seq=21\n2026-01-28 20:57:42.127 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=4f632a860ba7d9e0\n2026-01-28 20:57:42.127 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.127 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=21, decrypted_size=21\n2026-01-28 20:57:42.127 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:42.127 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.127 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:42.127 [warning] Processing ACK frame\n2026-01-28 20:57:42.127 [warning] process_ack called: stream_id=0, ack=13, bitmap=0x00000000, pending_before=4\n2026-01-28 20:57:42.127 [warning] acknowledge_cumulative: ack_seq=13, pending_count=4, pending_range=[13, 21]\n2026-01-28 20:57:42.127 [warning] Acknowledging packet seq=13\n2026-01-28 20:57:42.127 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:42.127 [warning] process_ack done: pending_after=3\n2026-01-28 20:57:42.131 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:42.131 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x4af4fb6c1feaeeb9, deobfuscated_seq=22\n2026-01-28 20:57:42.131 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=4af4fb6c1feaeeb9\n2026-01-28 20:57:42.131 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.131 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=22, decrypted_size=21\n2026-01-28 20:57:42.131 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:42.131 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.131 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:42.131 [warning] Processing ACK frame\n2026-01-28 20:57:42.131 [warning] process_ack called: stream_id=0, ack=15, bitmap=0x00000000, pending_before=3\n2026-01-28 20:57:42.131 [warning] acknowledge_cumulative: ack_seq=15, pending_count=3, pending_range=[15, 21]\n2026-01-28 20:57:42.131 [warning] Acknowledging packet seq=15\n2026-01-28 20:57:42.131 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:42.131 [warning] process_ack done: pending_after=2\n2026-01-28 20:57:42.140 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:42.140 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x1974f21262a04209, deobfuscated_seq=23\n2026-01-28 20:57:42.140 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=1974f21262a04209\n2026-01-28 20:57:42.140 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.140 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=23, decrypted_size=21\n2026-01-28 20:57:42.140 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:42.140 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.140 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:42.140 [warning] Processing ACK frame\n2026-01-28 20:57:42.140 [warning] process_ack called: stream_id=0, ack=16, bitmap=0x00000000, pending_before=2\n2026-01-28 20:57:42.140 [warning] acknowledge_cumulative: ack_seq=16, pending_count=2, pending_range=[16, 21]\n2026-01-28 20:57:42.140 [warning] Acknowledging packet seq=16\n2026-01-28 20:57:42.140 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:42.140 [warning] process_ack done: pending_after=1\n2026-01-28 20:57:42.140 [warning] TUN read: 52 bytes, 4.207.247.137 -> 10.8.0.2\n2026-01-28 20:57:42.140 [warning] Routing 52 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.140 [warning] RetransmitBuffer::insert: seq=25, size=96, pending_count=1\n2026-01-28 20:57:42.140 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n2026-01-28 20:57:42.140 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0x839de0a6607c0c7f, deobfuscated_seq=24\n2026-01-28 20:57:42.140 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=839de0a6607c0c7f\n2026-01-28 20:57:42.140 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.140 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=24, decrypted_size=72\n2026-01-28 20:57:42.140 [warning] Frame decoded: kind=1, payload_size=52\n2026-01-28 20:57:42.140 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.140 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.140 [warning] Writing 52 bytes to TUN from session 1\n2026-01-28 20:57:42.140 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=52\n2026-01-28 20:57:42.141 [warning] TunDevice::write: SUCCESS 52 bytes written\n2026-01-28 20:57:42.141 [warning] TUN write SUCCESS: 52 bytes\n2026-01-28 20:57:42.150 [warning] Processing packet from session 1 (95.79.92.14:60617), size=1394\n2026-01-28 20:57:42.150 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=1394, obfuscated_seq=0xba69e6fd1ea9be20, deobfuscated_seq=25\n2026-01-28 20:57:42.150 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=ba69e6fd1ea9be20\n2026-01-28 20:57:42.150 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.150 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=25, decrypted_size=1370\n2026-01-28 20:57:42.150 [warning] Frame decoded: kind=1, payload_size=1350\n2026-01-28 20:57:42.150 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.150 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.150 [warning] Writing 1350 bytes to TUN from session 1\n2026-01-28 20:57:42.150 [warning] TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=1400\n2026-01-28 20:57:42.150 [warning] TunDevice::write: SUCCESS 1350 bytes written\n2026-01-28 20:57:42.150 [warning] TUN write SUCCESS: 1350 bytes\n2026-01-28 20:57:42.150 [warning] Processing packet from session 1 (95.79.92.14:60617), size=94\n2026-01-28 20:57:42.150 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=94, obfuscated_seq=0xa7ba21975d7b6d27, deobfuscated_seq=26\n2026-01-28 20:57:42.150 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=a7ba21975d7b6d27\n2026-01-28 20:57:42.150 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.150 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=26, decrypted_size=70\n2026-01-28 20:57:42.150 [warning] Frame decoded: kind=1, payload_size=50\n2026-01-28 20:57:42.150 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.150 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.150 [warning] Writing 50 bytes to TUN from session 1\n2026-01-28 20:57:42.150 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.150 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.150 [error] Failed to write to TUN: Invalid argument\n2026-01-28 20:57:42.167 [warning] Processing packet from session 1 (95.79.92.14:60617), size=778\n2026-01-28 20:57:42.167 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=778, obfuscated_seq=0xcceed96b804c6d4d, deobfuscated_seq=27\n2026-01-28 20:57:42.167 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=cceed96b804c6d4d\n2026-01-28 20:57:42.167 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.167 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=27, decrypted_size=754\n2026-01-28 20:57:42.167 [warning] Frame decoded: kind=1, payload_size=734\n2026-01-28 20:57:42.167 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.167 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.167 [warning] Writing 734 bytes to TUN from session 1\n2026-01-28 20:57:42.167 [warning] TunDevice::write: 734 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=734\n2026-01-28 20:57:42.167 [warning] TunDevice::write: SUCCESS 734 bytes written\n2026-01-28 20:57:42.167 [warning] TUN write SUCCESS: 734 bytes\n2026-01-28 20:57:42.178 [warning] TUN read: 64 bytes, 8.47.69.10 -> 10.8.0.2\n2026-01-28 20:57:42.178 [warning] Routing 64 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.178 [warning] RetransmitBuffer::insert: seq=30, size=108, pending_count=2\n2026-01-28 20:57:42.188 [warning] TUN read: 60 bytes, 87.240.137.207 -> 10.8.0.2\n2026-01-28 20:57:42.188 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.188 [warning] RetransmitBuffer::insert: seq=31, size=104, pending_count=3\n2026-01-28 20:57:42.190 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:42.190 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x91c9ebfd06f3c1c8, deobfuscated_seq=28\n2026-01-28 20:57:42.190 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=91c9ebfd06f3c1c8\n2026-01-28 20:57:42.190 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.190 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=28, decrypted_size=21\n2026-01-28 20:57:42.190 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:42.190 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.190 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:42.190 [warning] Processing ACK frame\n2026-01-28 20:57:42.190 [warning] process_ack called: stream_id=0, ack=21, bitmap=0x00000000, pending_before=4\n2026-01-28 20:57:42.190 [warning] acknowledge_cumulative: ack_seq=21, pending_count=4, pending_range=[21, 31]\n2026-01-28 20:57:42.190 [warning] Acknowledging packet seq=21\n2026-01-28 20:57:42.190 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:42.190 [warning] process_ack done: pending_after=3\n2026-01-28 20:57:42.190 [warning] TUN read: 60 bytes, 140.82.112.21 -> 10.8.0.2\n2026-01-28 20:57:42.190 [warning] Routing 60 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.190 [warning] RetransmitBuffer::insert: seq=32, size=104, pending_count=3\n2026-01-28 20:57:42.190 [warning] Processing packet from session 1 (95.79.92.14:60617), size=96\n2026-01-28 20:57:42.190 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=96, obfuscated_seq=0xfa17f5f808b0d092, deobfuscated_seq=29\n2026-01-28 20:57:42.190 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=fa17f5f808b0d092\n2026-01-28 20:57:42.190 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.190 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=29, decrypted_size=72\n2026-01-28 20:57:42.190 [warning] Frame decoded: kind=1, payload_size=52\n2026-01-28 20:57:42.190 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.190 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.190 [warning] Writing 52 bytes to TUN from session 1\n2026-01-28 20:57:42.190 [warning] TunDevice::write: 52 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=52\n2026-01-28 20:57:42.190 [warning] TunDevice::write: SUCCESS 52 bytes written\n2026-01-28 20:57:42.190 [warning] TUN write SUCCESS: 52 bytes\n2026-01-28 20:57:42.201 [warning] TUN read: 52 bytes, 72.153.5.135 -> 10.8.0.2\n2026-01-28 20:57:42.201 [warning] Routing 52 bytes to session 1 (95.79.92.14:60617)\n2026-01-28 20:57:42.201 [warning] RetransmitBuffer::insert: seq=34, size=96, pending_count=4\n2026-01-28 20:57:42.238 [warning] Processing packet from session 1 (95.79.92.14:60617), size=1394\n2026-01-28 20:57:42.239 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=1394, obfuscated_seq=0x36422b431a3127e9, deobfuscated_seq=30\n2026-01-28 20:57:42.239 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=36422b431a3127e9\n2026-01-28 20:57:42.239 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.239 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=30, decrypted_size=1370\n2026-01-28 20:57:42.239 [warning] Frame decoded: kind=1, payload_size=1350\n2026-01-28 20:57:42.239 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.239 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.239 [warning] Writing 1350 bytes to TUN from session 1\n2026-01-28 20:57:42.239 [warning] TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 140.82.121.5, IHL=5, proto=6, total_len=1400\n2026-01-28 20:57:42.239 [warning] TunDevice::write: SUCCESS 1350 bytes written\n2026-01-28 20:57:42.239 [warning] TUN write SUCCESS: 1350 bytes\n2026-01-28 20:57:42.239 [warning] Processing packet from session 1 (95.79.92.14:60617), size=94\n2026-01-28 20:57:42.239 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=94, obfuscated_seq=0x73112e0333a2aa6a, deobfuscated_seq=31\n2026-01-28 20:57:42.239 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=73112e0333a2aa6a\n2026-01-28 20:57:42.239 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.239 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=31, decrypted_size=70\n2026-01-28 20:57:42.239 [warning] Frame decoded: kind=1, payload_size=50\n2026-01-28 20:57:42.239 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.239 [warning] Frame kind=1, is_data=true\n2026-01-28 20:57:42.239 [warning] Writing 50 bytes to TUN from session 1\n2026-01-28 20:57:42.239 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.239 [warning] TunDevice::write: SUCCESS 50 bytes written\n2026-01-28 20:57:42.239 [warning] TUN write SUCCESS: 50 bytes\n2026-01-28 20:57:42.244 [warning] Processing packet from session 1 (95.79.92.14:60617), size=45\n2026-01-28 20:57:42.244 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=45, obfuscated_seq=0x32a44f224ecb7225, deobfuscated_seq=32\n2026-01-28 20:57:42.245 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=32a44f224ecb7225\n2026-01-28 20:57:42.245 [warning] Replay check passed, proceeding to decryption\n2026-01-28 20:57:42.245 [warning] Decryption SUCCESS: session_id=11598378240004569761, sequence=32, decrypted_size=21\n2026-01-28 20:57:42.245 [warning] Frame decoded: kind=2, payload_size=0\n2026-01-28 20:57:42.245 [warning] Decrypted 1 frame(s) from session 1\n2026-01-28 20:57:42.245 [warning] Frame kind=2, is_data=false\n2026-01-28 20:57:42.245 [warning] Processing ACK frame\n2026-01-28 20:57:42.245 [warning] process_ack called: stream_id=0, ack=25, bitmap=0x00000000, pending_before=5\n2026-01-28 20:57:42.245 [warning] acknowledge_cumulative: ack_seq=25, pending_count=5, pending_range=[25, 34]\n2026-01-28 20:57:42.245 [warning] Acknowledging packet seq=25\n2026-01-28 20:57:42.245 [warning] acknowledge_cumulative done: acked=1 packets\n2026-01-28 20:57:42.245 [warning] process_ack done: pending_after=4\n2026-01-28 20:57:42.246 [warning] Processing packet from session 1 (95.79.92.14:60617), size=84\n2026-01-28 20:57:42.246 [warning] Decrypt attempt: session_id=11598378240004569761, pkt_size=84, obfuscated_seq=0x8a3c120d91eea32a, deobfuscated_seq=33\n2026-01-28 20:57:42.246 [warning] recv_seq_obfuscation_key_fp=40193c80, first_8_bytes=8a3c120d91eea32a","numLines":500,"startLine":1,"totalLines":6250}}} | |
| [2026-01-28T20:04:09.541Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01GhmAWeZps6CNAUUFc5WTWL", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "Excellent! I found a key issue. Look at line 407-409:\n\n```\nTunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\nTunDevice::write: failed to write 50 bytes: Invalid argument\nFailed to write to TUN: Invalid argument\n```\n\nThis shows there are packets with unknown IP version (14) that are being written to the TUN. This appears to be corrupted or incorrectly decoded data. But the main issue is something else.\n\nLooking at the logs, I see that:\n1. Server is successfully receiving packets from client\n2. Server is writing to TUN successfully \n3. Server IS reading return traffic from TUN (e.g., `TUN read: 60 bytes, 199.232.175.82 -> 10.8.0.2`)\n4. Server IS routing packets to the client (e.g., `Routing 60 bytes to session 1 (95.79.92.14:60617)`)\n\nAnd on the client side, I also see successful writes:\n- `TunDevice::write: 60 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=60`\n- `TunDevice::write: SUCCESS 60 bytes sent to Wintun`\n\nSo packets ARE being received on the client and written to Wintun successfully. Let me look for patterns of what might be failing. Let me look at more of both log files." | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21409, | |
| "cache_read_input_tokens": 62221, | |
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| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "8062cbb5-971f-47ea-ae0e-6e7abc30fc3e" | |
| } | |
| [2026-01-28T20:04:13.078Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01GhmAWeZps6CNAUUFc5WTWL", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01KQ8ywLHcPHFfPr4gDMCJU2", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write:.*failed|failed to write|No session found|TUN write.*FAIL\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/server_logs_latest.txt | head -30", | |
| "description": "Find write failures in server logs" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21409, | |
| "cache_read_input_tokens": 62221, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 21409, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 4, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "d7544308-d5fa-42cf-b98e-412abebdcf8f" | |
| } | |
| [2026-01-28T20:04:14.185Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01GhmAWeZps6CNAUUFc5WTWL", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01TMEap49bEspNdL2xcxLy8f", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write:.*failed|failed to write|No session found|TUN write.*FAIL|unknown IP version\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/daemon_logs_latest.txt | head -30", | |
| "description": "Find write failures in daemon logs" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 21409, | |
| "cache_read_input_tokens": 62221, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 21409, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 4, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "39991f4f-5120-4eeb-9e06-73b5cc855a96" | |
| } | |
| [2026-01-28T20:04:14.291Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01KQ8ywLHcPHFfPr4gDMCJU2", | |
| "type": "tool_result", | |
| "content": "2026-01-28 20:57:42.150 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.331 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.365 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.437 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.563 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.615 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.764 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.785 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.866 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.881 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.903 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.937 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.992 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.200 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.231 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.280 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.355 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.386 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.424 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.500 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.502 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.561 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.575 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.585 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.599 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.635 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.744 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.757 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.910 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.976 [error] TunDevice::write: failed to write 50 bytes: Invalid argument", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "d35bc86c-9d94-44ba-824c-710041747d00", | |
| "tool_use_result": { | |
| "stdout": "2026-01-28 20:57:42.150 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.331 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.365 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.437 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.563 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.615 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.764 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.785 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.866 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.881 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.903 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.937 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:42.992 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.200 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.231 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.280 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.355 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.386 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.424 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.500 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.502 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.561 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.575 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.585 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.599 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.635 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.744 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.757 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.910 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n2026-01-28 20:57:43.976 [error] TunDevice::write: failed to write 50 bytes: Invalid argument", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:04:14.294Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01TMEap49bEspNdL2xcxLy8f", | |
| "type": "tool_result", | |
| "content": "", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "646978be-468e-49c0-a77e-bcacbae05a35", | |
| "tool_use_result": { | |
| "stdout": "", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:04:24.638Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_019MB7ZiAs3MYHqusz89Z5tY", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "I see multiple write failures on the server side with 50-byte packets with \"Invalid argument\". Let me check what IP version these packets have." | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 1780, | |
| "cache_read_input_tokens": 83630, | |
| "cache_creation": { | |
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| }, | |
| "output_tokens": 3, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "80ac5bbc-2ad5-4f71-9f0d-67ccc7dd18ee" | |
| } | |
| [2026-01-28T20:04:28.336Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_019MB7ZiAs3MYHqusz89Z5tY", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01MYZRT4z18iXrGzhbsQSR7x", | |
| "name": "Bash", | |
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| "command": "grep -B1 \"failed to write 50 bytes\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/server_logs_latest.txt | head -40", | |
| "description": "Check what type of packets fail to write" | |
| } | |
| } | |
| ], | |
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| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "51f25675-081d-46bc-afc5-e6ee1849c28c" | |
| } | |
| [2026-01-28T20:04:28.437Z] [INFO] { | |
| "type": "user", | |
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| "role": "user", | |
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| { | |
| "tool_use_id": "toolu_01MYZRT4z18iXrGzhbsQSR7x", | |
| "type": "tool_result", | |
| "content": "2026-01-28 20:57:42.150 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.150 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.331 [warning] TunDevice::write: 50 bytes, unknown IP version 12, first byte=0xc3\n2026-01-28 20:57:42.331 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.365 [warning] TunDevice::write: 50 bytes, unknown IP version 8, first byte=0x89\n2026-01-28 20:57:42.365 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.437 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.437 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.563 [warning] TunDevice::write: 50 bytes, unknown IP version 1, first byte=0x16\n2026-01-28 20:57:42.563 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.615 [warning] TunDevice::write: 50 bytes, unknown IP version 2, first byte=0x29\n2026-01-28 20:57:42.615 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.764 [warning] TunDevice::write: 50 bytes, unknown IP version 8, first byte=0x89\n2026-01-28 20:57:42.764 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.785 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.785 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.866 [warning] TunDevice::write: 50 bytes, unknown IP version 8, first byte=0x8b\n2026-01-28 20:57:42.866 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.881 [warning] TunDevice::write: 50 bytes, unknown IP version 7, first byte=0x7d\n2026-01-28 20:57:42.881 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.903 [warning] TunDevice::write: 50 bytes, unknown IP version 11, first byte=0xb7\n2026-01-28 20:57:42.903 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.937 [warning] TunDevice::write: 50 bytes, unknown IP version 2, first byte=0x29\n2026-01-28 20:57:42.937 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.992 [warning] TunDevice::write: 50 bytes, unknown IP version 1, first byte=0x16\n2026-01-28 20:57:42.992 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:43.200 [warning] TunDevice::write: 50 bytes, unknown IP version 1, first byte=0x1d", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "a1ddb02f-bbd6-4707-a104-0b34fd524099", | |
| "tool_use_result": { | |
| "stdout": "2026-01-28 20:57:42.150 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.150 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.331 [warning] TunDevice::write: 50 bytes, unknown IP version 12, first byte=0xc3\n2026-01-28 20:57:42.331 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.365 [warning] TunDevice::write: 50 bytes, unknown IP version 8, first byte=0x89\n2026-01-28 20:57:42.365 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.437 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.437 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.563 [warning] TunDevice::write: 50 bytes, unknown IP version 1, first byte=0x16\n2026-01-28 20:57:42.563 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.615 [warning] TunDevice::write: 50 bytes, unknown IP version 2, first byte=0x29\n2026-01-28 20:57:42.615 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.764 [warning] TunDevice::write: 50 bytes, unknown IP version 8, first byte=0x89\n2026-01-28 20:57:42.764 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.785 [warning] TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\n2026-01-28 20:57:42.785 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.866 [warning] TunDevice::write: 50 bytes, unknown IP version 8, first byte=0x8b\n2026-01-28 20:57:42.866 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.881 [warning] TunDevice::write: 50 bytes, unknown IP version 7, first byte=0x7d\n2026-01-28 20:57:42.881 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.903 [warning] TunDevice::write: 50 bytes, unknown IP version 11, first byte=0xb7\n2026-01-28 20:57:42.903 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.937 [warning] TunDevice::write: 50 bytes, unknown IP version 2, first byte=0x29\n2026-01-28 20:57:42.937 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:42.992 [warning] TunDevice::write: 50 bytes, unknown IP version 1, first byte=0x16\n2026-01-28 20:57:42.992 [error] TunDevice::write: failed to write 50 bytes: Invalid argument\n--\n2026-01-28 20:57:43.200 [warning] TunDevice::write: 50 bytes, unknown IP version 1, first byte=0x1d", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:04:33.598Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_015vk7DNVcUsjSXSteKK5es2", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "Very interesting! These 50-byte packets have random-looking IP version numbers (1, 2, 7, 8, 11, 12, 14) with first bytes like 0xef, 0xc3, 0x89, etc. These are not valid IP packets. This suggests that the data is not being decoded correctly somewhere, or there's garbage data being processed.\n\nLet me look at the pattern more closely - all failing packets are exactly 50 bytes. Let me also check if there's a pattern in the daemon logs (client side) to understand what's happening there." | |
| } | |
| ], | |
| "stop_reason": null, | |
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| "service_tier": "standard" | |
| }, | |
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| }, | |
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| "uuid": "9ead563c-d39b-484b-9b33-2a7f66779a2e" | |
| } | |
| [2026-01-28T20:04:37.189Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_015vk7DNVcUsjSXSteKK5es2", | |
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| "role": "assistant", | |
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| { | |
| "type": "tool_use", | |
| "id": "toolu_01FNovqyMkkfWjWJbsdQivr1", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write:.*50 bytes\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/daemon_logs_latest.txt | head -20", | |
| "description": "Check 50-byte packets on client side" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
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| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 1265, | |
| "ephemeral_1h_input_tokens": 0 | |
| }, | |
| "output_tokens": 1, | |
| "service_tier": "standard" | |
| }, | |
| "context_management": null | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "79943180-0be5-4837-a2c1-454b6a330037" | |
| } | |
| [2026-01-28T20:04:38.428Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_015vk7DNVcUsjSXSteKK5es2", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01M3SskPx9C64b73T7dAVRos", | |
| "name": "Bash", | |
| "input": { | |
| "command": "grep -E \"TunDevice::write:.*IPv6\" /tmp/claude/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad/scratchpad/server_logs_latest.txt | head -20", | |
| "description": "Check IPv6 packets on server side" | |
| } | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 0, | |
| "cache_creation_input_tokens": 1265, | |
| "cache_read_input_tokens": 85410, | |
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| }, | |
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| }, | |
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| }, | |
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| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "0c12998a-c7f3-48cc-b39d-bd42340079a2" | |
| } | |
| [2026-01-28T20:04:38.529Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01FNovqyMkkfWjWJbsdQivr1", | |
| "type": "tool_result", | |
| "content": "2026-01-28 22:57:40.770 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.770 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.771 [warning] TunDevice::write: 50 bytes, IP version 6 (not IPv4), first byte=0x6f\n2026-01-28 22:57:40.772 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.780 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.780 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.782 [warning] TunDevice::write: 50 bytes, IP version 0 (not IPv4), first byte=0x07\n2026-01-28 22:57:40.782 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.785 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.785 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.786 [warning] TunDevice::write: 50 bytes, IP version 1 (not IPv4), first byte=0x1d\n2026-01-28 22:57:40.786 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.795 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.795 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.797 [warning] TunDevice::write: 50 bytes, IP version 5 (not IPv4), first byte=0x50\n2026-01-28 22:57:40.797 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.954 [warning] TunDevice::write: 1350 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.954 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.955 [warning] TunDevice::write: 50 bytes, IP version 14 (not IPv4), first byte=0xe7\n2026-01-28 22:57:40.955 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "756cf288-4e1b-4809-b234-54a297beecb7", | |
| "tool_use_result": { | |
| "stdout": "2026-01-28 22:57:40.770 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.770 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.771 [warning] TunDevice::write: 50 bytes, IP version 6 (not IPv4), first byte=0x6f\n2026-01-28 22:57:40.772 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.780 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.780 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.782 [warning] TunDevice::write: 50 bytes, IP version 0 (not IPv4), first byte=0x07\n2026-01-28 22:57:40.782 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.785 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.785 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.786 [warning] TunDevice::write: 50 bytes, IP version 1 (not IPv4), first byte=0x1d\n2026-01-28 22:57:40.786 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.795 [warning] TunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.795 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.797 [warning] TunDevice::write: 50 bytes, IP version 5 (not IPv4), first byte=0x50\n2026-01-28 22:57:40.797 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun\n2026-01-28 22:57:40.954 [warning] TunDevice::write: 1350 bytes, IPv4 199.232.175.82 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\n2026-01-28 22:57:40.954 [warning] TunDevice::write: SUCCESS 1350 bytes sent to Wintun\n2026-01-28 22:57:40.955 [warning] TunDevice::write: 50 bytes, IP version 14 (not IPv4), first byte=0xe7\n2026-01-28 22:57:40.955 [warning] TunDevice::write: SUCCESS 50 bytes sent to Wintun", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:04:38.533Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_01M3SskPx9C64b73T7dAVRos", | |
| "type": "tool_result", | |
| "content": "2026-01-28 20:57:41.774 [warning] TunDevice::write: 64 bytes, IPv6 packet\n2026-01-28 20:57:41.791 [warning] TunDevice::write: 48 bytes, IPv6 packet\n2026-01-28 20:57:41.793 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:42.058 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.239 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.282 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:42.647 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.789 [warning] TunDevice::write: 64 bytes, IPv6 packet\n2026-01-28 20:57:42.802 [warning] TunDevice::write: 96 bytes, IPv6 packet\n2026-01-28 20:57:42.820 [warning] TunDevice::write: 81 bytes, IPv6 packet\n2026-01-28 20:57:42.840 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:43.001 [warning] TunDevice::write: 143 bytes, IPv6 packet\n2026-01-28 20:57:43.287 [warning] TunDevice::write: 81 bytes, IPv6 packet\n2026-01-28 20:57:43.328 [warning] TunDevice::write: 116 bytes, IPv6 packet\n2026-01-28 20:57:43.413 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:43.820 [warning] TunDevice::write: 99 bytes, IPv6 packet\n2026-01-28 20:57:43.944 [warning] TunDevice::write: 99 bytes, IPv6 packet\n2026-01-28 20:57:44.033 [warning] TunDevice::write: 99 bytes, IPv6 packet\n2026-01-28 20:57:44.272 [warning] TunDevice::write: 328 bytes, IPv6 packet\n2026-01-28 20:57:44.784 [warning] TunDevice::write: 76 bytes, IPv6 packet", | |
| "is_error": false | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "0c076a0f-cf15-44d7-9a24-937d77b7358c", | |
| "tool_use_result": { | |
| "stdout": "2026-01-28 20:57:41.774 [warning] TunDevice::write: 64 bytes, IPv6 packet\n2026-01-28 20:57:41.791 [warning] TunDevice::write: 48 bytes, IPv6 packet\n2026-01-28 20:57:41.793 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:42.058 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.239 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.282 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:42.647 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:42.789 [warning] TunDevice::write: 64 bytes, IPv6 packet\n2026-01-28 20:57:42.802 [warning] TunDevice::write: 96 bytes, IPv6 packet\n2026-01-28 20:57:42.820 [warning] TunDevice::write: 81 bytes, IPv6 packet\n2026-01-28 20:57:42.840 [warning] TunDevice::write: 76 bytes, IPv6 packet\n2026-01-28 20:57:43.001 [warning] TunDevice::write: 143 bytes, IPv6 packet\n2026-01-28 20:57:43.287 [warning] TunDevice::write: 81 bytes, IPv6 packet\n2026-01-28 20:57:43.328 [warning] TunDevice::write: 116 bytes, IPv6 packet\n2026-01-28 20:57:43.413 [warning] TunDevice::write: 50 bytes, IPv6 packet\n2026-01-28 20:57:43.820 [warning] TunDevice::write: 99 bytes, IPv6 packet\n2026-01-28 20:57:43.944 [warning] TunDevice::write: 99 bytes, IPv6 packet\n2026-01-28 20:57:44.033 [warning] TunDevice::write: 99 bytes, IPv6 packet\n2026-01-28 20:57:44.272 [warning] TunDevice::write: 328 bytes, IPv6 packet\n2026-01-28 20:57:44.784 [warning] TunDevice::write: 76 bytes, IPv6 packet", | |
| "stderr": "", | |
| "interrupted": false, | |
| "isImage": false | |
| } | |
| } | |
| [2026-01-28T20:04:46.072Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_017SWbj1CWmq4siTy4ktSxHV", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "I see something important now! Looking at the daemon (client) logs:\n\nThe 50-byte packets with weird IP versions (0, 1, 5, 6, 14) are coming after 1350-byte packets. This pattern is suspicious. Let me look at the frame framing to understand what's happening.\n\nLooking at the pattern:\n- `1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400`\n- Then immediately: `50 bytes, IP version 0 (not IPv4), first byte=0x07`\n\nThe total_len in the IP header is 1400, but only 1350 bytes were received. This looks like IP fragmentation or MTU issues. The 50-byte \"packets\" with garbage IP versions are likely the second half of fragmented data that was decoded incorrectly!\n\nLet me look at how the frames are being decoded. Let me check the code." | |
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| "content": " 1→#include \"transport/mux/mux_codec.h\"\n 2→\n 3→#include <algorithm>\n 4→#include <cstdint>\n 5→#include <optional>\n 6→#include <span>\n 7→#include <vector>\n 8→\n 9→namespace {\n 10→\n 11→void write_u16(std::vector<std::uint8_t>& out, std::uint16_t value) {\n 12→ out.push_back(static_cast<std::uint8_t>((value >> 8) & 0xFF));\n 13→ out.push_back(static_cast<std::uint8_t>(value & 0xFF));\n 14→}\n 15→\n 16→void write_u32(std::vector<std::uint8_t>& out, std::uint32_t value) {\n 17→ out.push_back(static_cast<std::uint8_t>((value >> 24) & 0xFF));\n 18→ out.push_back(static_cast<std::uint8_t>((value >> 16) & 0xFF));\n 19→ out.push_back(static_cast<std::uint8_t>((value >> 8) & 0xFF));\n 20→ out.push_back(static_cast<std::uint8_t>(value & 0xFF));\n 21→}\n 22→\n 23→void write_u64(std::vector<std::uint8_t>& out, std::uint64_t value) {\n 24→ for (int i = 7; i >= 0; --i) {\n 25→ out.push_back(static_cast<std::uint8_t>((value >> (8 * i)) & 0xFF));\n 26→ }\n 27→}\n 28→\n 29→std::uint16_t read_u16(std::span<const std::uint8_t> data, std::size_t offset) {\n 30→ return static_cast<std::uint16_t>((data[offset] << 8) | data[offset + 1]);\n 31→}\n 32→\n 33→std::uint32_t read_u32(std::span<const std::uint8_t> data, std::size_t offset) {\n 34→ return (static_cast<std::uint32_t>(data[offset]) << 24) |\n 35→ (static_cast<std::uint32_t>(data[offset + 1]) << 16) |\n 36→ (static_cast<std::uint32_t>(data[offset + 2]) << 8) |\n 37→ static_cast<std::uint32_t>(data[offset + 3]);\n 38→}\n 39→\n 40→std::uint64_t read_u64(std::span<const std::uint8_t> data, std::size_t offset) {\n 41→ std::uint64_t value = 0;\n 42→ for (int i = 0; i < 8; ++i) {\n 43→ value = (value << 8) | data[offset + static_cast<std::size_t>(i)];\n 44→ }\n 45→ return value;\n 46→}\n 47→\n 48→} // namespace\n 49→\n 50→namespace veil::mux {\n 51→\n 52→std::vector<std::uint8_t> MuxCodec::encode(const MuxFrame& frame) {\n 53→ std::vector<std::uint8_t> out;\n 54→ out.reserve(encoded_size(frame));\n 55→ out.push_back(static_cast<std::uint8_t>(frame.kind));\n 56→\n 57→ switch (frame.kind) {\n 58→ case FrameKind::kData: {\n 59→ write_u64(out, frame.data.stream_id);\n 60→ write_u64(out, frame.data.sequence);\n 61→ std::uint8_t flags = frame.data.fin ? 0x01 : 0x00;\n 62→ out.push_back(flags);\n 63→ write_u16(out, static_cast<std::uint16_t>(frame.data.payload.size()));\n 64→ out.insert(out.end(), frame.data.payload.begin(), frame.data.payload.end());\n 65→ break;\n 66→ }\n 67→ case FrameKind::kAck: {\n 68→ write_u64(out, frame.ack.stream_id);\n 69→ write_u64(out, frame.ack.ack);\n 70→ write_u32(out, frame.ack.bitmap);\n 71→ break;\n 72→ }\n 73→ case FrameKind::kControl: {\n 74→ out.push_back(frame.control.type);\n 75→ write_u16(out, static_cast<std::uint16_t>(frame.control.payload.size()));\n 76→ out.insert(out.end(), frame.control.payload.begin(), frame.control.payload.end());\n 77→ break;\n 78→ }\n 79→ case FrameKind::kHeartbeat: {\n 80→ write_u64(out, frame.heartbeat.timestamp);\n 81→ write_u64(out, frame.heartbeat.sequence);\n 82→ write_u16(out, static_cast<std::uint16_t>(frame.heartbeat.payload.size()));\n 83→ out.insert(out.end(), frame.heartbeat.payload.begin(), frame.heartbeat.payload.end());\n 84→ break;\n 85→ }\n 86→ }\n 87→\n 88→ return out;\n 89→}\n 90→\n 91→std::optional<MuxFrame> MuxCodec::decode(std::span<const std::uint8_t> data) {\n 92→ if (data.empty()) {\n 93→ return std::nullopt;\n 94→ }\n 95→\n 96→ MuxFrame frame{};\n 97→ const auto kind = static_cast<FrameKind>(data[0]);\n 98→ frame.kind = kind;\n 99→\n 100→ switch (kind) {\n 101→ case FrameKind::kData: {\n 102→ if (data.size() < kDataHeaderSize) {\n 103→ return std::nullopt;\n 104→ }\n 105→ frame.data.stream_id = read_u64(data, 1);\n 106→ frame.data.sequence = read_u64(data, 9);\n 107→ std::uint8_t flags = data[17];\n 108→ frame.data.fin = (flags & 0x01) != 0;\n 109→ std::uint16_t payload_len = read_u16(data, 18);\n 110→ if (data.size() != kDataHeaderSize + payload_len) {\n 111→ return std::nullopt;\n 112→ }\n 113→ frame.data.payload.assign(data.begin() + kDataHeaderSize, data.end());\n 114→ break;\n 115→ }\n 116→ case FrameKind::kAck: {\n 117→ if (data.size() != kAckSize) {\n 118→ return std::nullopt;\n 119→ }\n 120→ frame.ack.stream_id = read_u64(data, 1);\n 121→ frame.ack.ack = read_u64(data, 9);\n 122→ frame.ack.bitmap = read_u32(data, 17);\n 123→ break;\n 124→ }\n 125→ case FrameKind::kControl: {\n 126→ if (data.size() < kControlHeaderSize) {\n 127→ return std::nullopt;\n 128→ }\n 129→ frame.control.type = data[1];\n 130→ std::uint16_t payload_len = read_u16(data, 2);\n 131→ if (data.size() != kControlHeaderSize + payload_len) {\n 132→ return std::nullopt;\n 133→ }\n 134→ frame.control.payload.assign(data.begin() + kControlHeaderSize, data.end());\n 135→ break;\n 136→ }\n 137→ case FrameKind::kHeartbeat: {\n 138→ if (data.size() < kHeartbeatHeaderSize) {\n 139→ return std::nullopt;\n 140→ }\n 141→ frame.heartbeat.timestamp = read_u64(data, 1);\n 142→ frame.heartbeat.sequence = read_u64(data, 9);\n 143→ std::uint16_t payload_len = read_u16(data, 17);\n 144→ if (data.size() != kHeartbeatHeaderSize + payload_len) {\n 145→ return std::nullopt;\n 146→ }\n 147→ frame.heartbeat.payload.assign(data.begin() + kHeartbeatHeaderSize, data.end());\n 148→ break;\n 149→ }\n 150→ default:\n 151→ return std::nullopt;\n 152→ }\n 153→\n 154→ return frame;\n 155→}\n 156→\n 157→std::size_t MuxCodec::encoded_size(const MuxFrame& frame) {\n 158→ switch (frame.kind) {\n 159→ case FrameKind::kData:\n 160→ return kDataHeaderSize + frame.data.payload.size();\n 161→ case FrameKind::kAck:\n 162→ return kAckSize;\n 163→ case FrameKind::kControl:\n 164→ return kControlHeaderSize + frame.control.payload.size();\n 165→ case FrameKind::kHeartbeat:\n 166→ return kHeartbeatHeaderSize + frame.heartbeat.payload.size();\n 167→ }\n 168→ return 0;\n 169→}\n 170→\n 171→MuxFrame make_data_frame(std::uint64_t stream_id, std::uint64_t sequence, bool fin,\n 172→ std::vector<std::uint8_t> payload) {\n 173→ MuxFrame frame{};\n 174→ frame.kind = FrameKind::kData;\n 175→ frame.data.stream_id = stream_id;\n 176→ frame.data.sequence = sequence;\n 177→ frame.data.fin = fin;\n 178→ frame.data.payload = std::move(payload);\n 179→ return frame;\n 180→}\n 181→\n 182→MuxFrame make_ack_frame(std::uint64_t stream_id, std::uint64_t ack, std::uint32_t bitmap) {\n 183→ MuxFrame frame{};\n 184→ frame.kind = FrameKind::kAck;\n 185→ frame.ack.stream_id = stream_id;\n 186→ frame.ack.ack = ack;\n 187→ frame.ack.bitmap = bitmap;\n 188→ return frame;\n 189→}\n 190→\n 191→MuxFrame make_control_frame(std::uint8_t type, std::vector<std::uint8_t> payload) {\n 192→ MuxFrame frame{};\n 193→ frame.kind = FrameKind::kControl;\n 194→ frame.control.type = type;\n 195→ frame.control.payload = std::move(payload);\n 196→ return frame;\n 197→}\n 198→\n 199→MuxFrame make_heartbeat_frame(std::uint64_t timestamp, std::uint64_t sequence,\n 200→ std::vector<std::uint8_t> payload) {\n 201→ MuxFrame frame{};\n 202→ frame.kind = FrameKind::kHeartbeat;\n 203→ frame.heartbeat.timestamp = timestamp;\n 204→ frame.heartbeat.sequence = sequence;\n 205→ frame.heartbeat.payload = std::move(payload);\n 206→ return frame;\n 207→}\n 208→\n 209→} // namespace veil::mux\n 210→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": "#include \"transport/mux/mux_codec.h\"\n\n#include <algorithm>\n#include <cstdint>\n#include <optional>\n#include <span>\n#include <vector>\n\nnamespace {\n\nvoid write_u16(std::vector<std::uint8_t>& out, std::uint16_t value) {\n out.push_back(static_cast<std::uint8_t>((value >> 8) & 0xFF));\n out.push_back(static_cast<std::uint8_t>(value & 0xFF));\n}\n\nvoid write_u32(std::vector<std::uint8_t>& out, std::uint32_t value) {\n out.push_back(static_cast<std::uint8_t>((value >> 24) & 0xFF));\n out.push_back(static_cast<std::uint8_t>((value >> 16) & 0xFF));\n out.push_back(static_cast<std::uint8_t>((value >> 8) & 0xFF));\n out.push_back(static_cast<std::uint8_t>(value & 0xFF));\n}\n\nvoid write_u64(std::vector<std::uint8_t>& out, std::uint64_t value) {\n for (int i = 7; i >= 0; --i) {\n out.push_back(static_cast<std::uint8_t>((value >> (8 * i)) & 0xFF));\n }\n}\n\nstd::uint16_t read_u16(std::span<const std::uint8_t> data, std::size_t offset) {\n return static_cast<std::uint16_t>((data[offset] << 8) | data[offset + 1]);\n}\n\nstd::uint32_t read_u32(std::span<const std::uint8_t> data, std::size_t offset) {\n return (static_cast<std::uint32_t>(data[offset]) << 24) |\n (static_cast<std::uint32_t>(data[offset + 1]) << 16) |\n (static_cast<std::uint32_t>(data[offset + 2]) << 8) |\n static_cast<std::uint32_t>(data[offset + 3]);\n}\n\nstd::uint64_t read_u64(std::span<const std::uint8_t> data, std::size_t offset) {\n std::uint64_t value = 0;\n for (int i = 0; i < 8; ++i) {\n value = (value << 8) | data[offset + static_cast<std::size_t>(i)];\n }\n return value;\n}\n\n} // namespace\n\nnamespace veil::mux {\n\nstd::vector<std::uint8_t> MuxCodec::encode(const MuxFrame& frame) {\n std::vector<std::uint8_t> out;\n out.reserve(encoded_size(frame));\n out.push_back(static_cast<std::uint8_t>(frame.kind));\n\n switch (frame.kind) {\n case FrameKind::kData: {\n write_u64(out, frame.data.stream_id);\n write_u64(out, frame.data.sequence);\n std::uint8_t flags = frame.data.fin ? 0x01 : 0x00;\n out.push_back(flags);\n write_u16(out, static_cast<std::uint16_t>(frame.data.payload.size()));\n out.insert(out.end(), frame.data.payload.begin(), frame.data.payload.end());\n break;\n }\n case FrameKind::kAck: {\n write_u64(out, frame.ack.stream_id);\n write_u64(out, frame.ack.ack);\n write_u32(out, frame.ack.bitmap);\n break;\n }\n case FrameKind::kControl: {\n out.push_back(frame.control.type);\n write_u16(out, static_cast<std::uint16_t>(frame.control.payload.size()));\n out.insert(out.end(), frame.control.payload.begin(), frame.control.payload.end());\n break;\n }\n case FrameKind::kHeartbeat: {\n write_u64(out, frame.heartbeat.timestamp);\n write_u64(out, frame.heartbeat.sequence);\n write_u16(out, static_cast<std::uint16_t>(frame.heartbeat.payload.size()));\n out.insert(out.end(), frame.heartbeat.payload.begin(), frame.heartbeat.payload.end());\n break;\n }\n }\n\n return out;\n}\n\nstd::optional<MuxFrame> MuxCodec::decode(std::span<const std::uint8_t> data) {\n if (data.empty()) {\n return std::nullopt;\n }\n\n MuxFrame frame{};\n const auto kind = static_cast<FrameKind>(data[0]);\n frame.kind = kind;\n\n switch (kind) {\n case FrameKind::kData: {\n if (data.size() < kDataHeaderSize) {\n return std::nullopt;\n }\n frame.data.stream_id = read_u64(data, 1);\n frame.data.sequence = read_u64(data, 9);\n std::uint8_t flags = data[17];\n frame.data.fin = (flags & 0x01) != 0;\n std::uint16_t payload_len = read_u16(data, 18);\n if (data.size() != kDataHeaderSize + payload_len) {\n return std::nullopt;\n }\n frame.data.payload.assign(data.begin() + kDataHeaderSize, data.end());\n break;\n }\n case FrameKind::kAck: {\n if (data.size() != kAckSize) {\n return std::nullopt;\n }\n frame.ack.stream_id = read_u64(data, 1);\n frame.ack.ack = read_u64(data, 9);\n frame.ack.bitmap = read_u32(data, 17);\n break;\n }\n case FrameKind::kControl: {\n if (data.size() < kControlHeaderSize) {\n return std::nullopt;\n }\n frame.control.type = data[1];\n std::uint16_t payload_len = read_u16(data, 2);\n if (data.size() != kControlHeaderSize + payload_len) {\n return std::nullopt;\n }\n frame.control.payload.assign(data.begin() + kControlHeaderSize, data.end());\n break;\n }\n case FrameKind::kHeartbeat: {\n if (data.size() < kHeartbeatHeaderSize) {\n return std::nullopt;\n }\n frame.heartbeat.timestamp = read_u64(data, 1);\n frame.heartbeat.sequence = read_u64(data, 9);\n std::uint16_t payload_len = read_u16(data, 17);\n if (data.size() != kHeartbeatHeaderSize + payload_len) {\n return std::nullopt;\n }\n frame.heartbeat.payload.assign(data.begin() + kHeartbeatHeaderSize, data.end());\n break;\n }\n default:\n return std::nullopt;\n }\n\n return frame;\n}\n\nstd::size_t MuxCodec::encoded_size(const MuxFrame& frame) {\n switch (frame.kind) {\n case FrameKind::kData:\n return kDataHeaderSize + frame.data.payload.size();\n case FrameKind::kAck:\n return kAckSize;\n case FrameKind::kControl:\n return kControlHeaderSize + frame.control.payload.size();\n case FrameKind::kHeartbeat:\n return kHeartbeatHeaderSize + frame.heartbeat.payload.size();\n }\n return 0;\n}\n\nMuxFrame make_data_frame(std::uint64_t stream_id, std::uint64_t sequence, bool fin,\n std::vector<std::uint8_t> payload) {\n MuxFrame frame{};\n frame.kind = FrameKind::kData;\n frame.data.stream_id = stream_id;\n frame.data.sequence = sequence;\n frame.data.fin = fin;\n frame.data.payload = std::move(payload);\n return frame;\n}\n\nMuxFrame make_ack_frame(std::uint64_t stream_id, std::uint64_t ack, std::uint32_t bitmap) {\n MuxFrame frame{};\n frame.kind = FrameKind::kAck;\n frame.ack.stream_id = stream_id;\n frame.ack.ack = ack;\n frame.ack.bitmap = bitmap;\n return frame;\n}\n\nMuxFrame make_control_frame(std::uint8_t type, std::vector<std::uint8_t> payload) {\n MuxFrame frame{};\n frame.kind = FrameKind::kControl;\n frame.control.type = type;\n frame.control.payload = std::move(payload);\n return frame;\n}\n\nMuxFrame make_heartbeat_frame(std::uint64_t timestamp, std::uint64_t sequence,\n std::vector<std::uint8_t> payload) {\n MuxFrame frame{};\n frame.kind = FrameKind::kHeartbeat;\n frame.heartbeat.timestamp = timestamp;\n frame.heartbeat.sequence = sequence;\n frame.heartbeat.payload = std::move(payload);\n return frame;\n}\n\n} // namespace veil::mux\n", | |
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| "text": "Now let me look at how the decryption and frame processing happens. Let me look at the tunnel.cpp and server/main.cpp to understand the packet flow better." | |
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| [2026-01-28T20:05:00.154Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_018LWunk4vCeXLBLFaa4xRxp","type":"tool_result","content":" 1→#include \"tunnel/tunnel.h\"\n 2→\n 3→#include <array>\n 4→#include <fstream>\n 5→\n 6→#include \"common/handshake/handshake_processor.h\"\n 7→#include \"transport/mux/mux_codec.h\"\n 8→#include \"common/logging/logger.h\"\n 9→#ifndef _WIN32\n 10→#include \"common/signal/signal_handler.h\"\n 11→#else\n 12→#include \"windows/console_handler.h\"\n 13→#endif\n 14→#include \"common/utils/rate_limiter.h\"\n 15→\n 16→namespace veil::tunnel {\n 17→\n 18→namespace {\n 19→constexpr std::size_t kMaxPacketSize = 65535;\n 20→\n 21→// Helper functions for ACK sending logging (Issue #72 fix)\n 22→// These avoid the bugprone-lambda-function-name clang-tidy warning when LOG_* is used in lambdas\n 23→void log_ack_send_error(const std::error_code& ec) {\n 24→ LOG_WARN(\"Failed to send ACK to server: {}\", ec.message());\n 25→}\n 26→\n 27→void log_ack_sent([[maybe_unused]] std::uint64_t ack, [[maybe_unused]] std::uint32_t bitmap) {\n 28→ LOG_DEBUG(\"Sent ACK to server: ack={}, bitmap={:#010x}\", ack, bitmap);\n 29→}\n 30→\n 31→// Helper to provide actionable error message for key file issues.\n 32→std::string format_key_error(const std::string& key_type, const std::string& path,\n 33→ const std::error_code& ec) {\n 34→ std::string msg = key_type + \" file '\" + path + \"' error: \" + ec.message() + \"\\n\";\n 35→ if (ec == std::errc::no_such_file_or_directory) {\n 36→ msg += \" To generate a new key, run:\\n\";\n 37→ msg += \" head -c 32 /dev/urandom > \" + path + \"\\n\";\n 38→ msg += \" Then copy this file securely to both server and client.\";\n 39→ } else if (ec == std::errc::permission_denied) {\n 40→ msg += \" Check file permissions with: ls -la \" + path + \"\\n\";\n 41→ msg += \" Ensure the file is readable by the current user.\";\n 42→ } else if (ec == std::errc::io_error) {\n 43→ msg += \" The key file must be exactly 32 bytes.\\n\";\n 44→ msg += \" Regenerate with: head -c 32 /dev/urandom > \" + path;\n 45→ }\n 46→ return msg;\n 47→}\n 48→\n 49→bool load_key_from_file(const std::string& path, std::vector<std::uint8_t>& key,\n 50→ std::error_code& ec) {\n 51→ LOG_DEBUG(\"Loading key from file: {}\", path);\n 52→ std::ifstream file(path, std::ios::binary);\n 53→ if (!file) {\n 54→ ec = std::error_code(errno, std::generic_category());\n 55→ LOG_ERROR(\"Failed to open key file '{}': {}\", path, ec.message());\n 56→ return false;\n 57→ }\n 58→\n 59→ // First, determine the file size\n 60→ file.seekg(0, std::ios::end);\n 61→ auto file_size = file.tellg();\n 62→ file.seekg(0, std::ios::beg);\n 63→ LOG_DEBUG(\"Key file size: {} bytes\", static_cast<long long>(file_size));\n 64→\n 65→ if (file_size < 32) {\n 66→ LOG_ERROR(\"Key file '{}' is too small: {} bytes (expected at least 32)\", path,\n 67→ static_cast<long long>(file_size));\n 68→ ec = std::make_error_code(std::errc::io_error);\n 69→ return false;\n 70→ }\n 71→\n 72→ if (file_size > 32) {\n 73→ LOG_WARN(\"Key file '{}' is {} bytes (expected 32). Only first 32 bytes will be used.\",\n 74→ path, static_cast<long long>(file_size));\n 75→\n 76→ // Read all bytes to show what extra data is present\n 77→ std::vector<std::uint8_t> all_bytes(static_cast<size_t>(file_size));\n 78→ file.read(reinterpret_cast<char*>(all_bytes.data()), file_size);\n 79→\n 80→ // Log hex dump of extra bytes to diagnose the issue\n 81→ if (file.gcount() == file_size && file_size > 32) {\n 82→ std::string extra_hex;\n 83→ for (size_t i = 32; i < static_cast<size_t>(file_size) && i < 44; ++i) {\n 84→ char buf[8];\n 85→ snprintf(buf, sizeof(buf), \"%02x \", all_bytes[i]);\n 86→ extra_hex += buf;\n 87→ }\n 88→ LOG_WARN(\" Extra bytes after position 32: {}\", extra_hex);\n 89→ LOG_WARN(\" This likely means the key file has Windows line endings (CRLF) or was edited in Notepad.\");\n 90→ LOG_WARN(\" FIX: The key should be exactly 32 bytes with no newlines or extra characters.\");\n 91→ LOG_WARN(\" To fix: Copy the raw hex/base64 value WITHOUT any newlines or spaces.\");\n 92→ }\n 93→\n 94→ // Copy first 32 bytes to key\n 95→ key.assign(all_bytes.begin(), all_bytes.begin() + 32);\n 96→ } else {\n 97→ key.resize(32);\n 98→ file.read(reinterpret_cast<char*>(key.data()), static_cast<std::streamsize>(key.size()));\n 99→ if (file.gcount() != static_cast<std::streamsize>(key.size())) {\n 100→ LOG_ERROR(\"Failed to read 32 bytes from key file '{}': only {} bytes read\",\n 101→ path, file.gcount());\n 102→ ec = std::make_error_code(std::errc::io_error);\n 103→ return false;\n 104→ }\n 105→ }\n 106→\n 107→ LOG_DEBUG(\"Successfully read 32 bytes from key file\");\n 108→\n 109→ // Log hex dump of key for debugging (first 8 bytes only for security)\n 110→ if (key.size() >= 8) {\n 111→ LOG_DEBUG(\"Key file content (first 8 bytes): {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x}\",\n 112→ key[0], key[1], key[2], key[3], key[4], key[5], key[6], key[7]);\n 113→ }\n 114→\n 115→ return true;\n 116→}\n 117→} // namespace\n 118→\n 119→Tunnel::Tunnel(TunnelConfig config, std::function<TimePoint()> now_fn)\n 120→ : config_(std::move(config)), now_fn_(std::move(now_fn)), pmtu_discovery_(config_.pmtu, now_fn_) {}\n 121→\n 122→Tunnel::~Tunnel() { stop(); }\n 123→\n 124→bool Tunnel::initialize(std::error_code& ec) {\n 125→ LOG_INFO(\"Initializing tunnel...\");\n 126→\n 127→ // Load pre-shared key if specified.\n 128→ if (!config_.key_file.empty()) {\n 129→ if (!load_key_from_file(config_.key_file, config_.psk, ec)) {\n 130→ std::string error_msg = format_key_error(\"Pre-shared key\", config_.key_file, ec);\n 131→ LOG_ERROR(\"{}\", error_msg);\n 132→ return false;\n 133→ }\n 134→ LOG_DEBUG(\"Loaded pre-shared key from {}\", config_.key_file);\n 135→ // Log key fingerprint (first 4 bytes as hex) for debugging key mismatch issues\n 136→ // This helps verify the same key is being used on client and server\n 137→ // without revealing the full key\n 138→ if (config_.psk.size() >= 4) {\n 139→ LOG_DEBUG(\"PSK fingerprint (first 4 bytes): {:02x}{:02x}{:02x}{:02x}\",\n 140→ config_.psk[0], config_.psk[1], config_.psk[2], config_.psk[3]);\n 141→ }\n 142→ } else {\n 143→ LOG_WARN(\"No pre-shared key file specified - connection will fail!\");\n 144→ }\n 145→\n 146→ // Generate ephemeral key pair for this session.\n 147→ key_pair_ = crypto::generate_x25519_keypair();\n 148→ LOG_DEBUG(\"Generated ephemeral key pair\");\n 149→\n 150→ // Load obfuscation seed if specified.\n 151→ if (!config_.obfuscation_seed_file.empty()) {\n 152→ std::vector<std::uint8_t> seed;\n 153→ if (!load_key_from_file(config_.obfuscation_seed_file, seed, ec)) {\n 154→ LOG_WARN(\"Failed to load obfuscation seed: {}\", ec.message());\n 155→ // Continue without obfuscation seed.\n 156→ } else if (seed.size() >= obfuscation::kProfileSeedSize) {\n 157→ std::copy_n(seed.begin(), obfuscation::kProfileSeedSize,\n 158→ obfuscation_profile_.profile_seed.begin());\n 159→ obfuscation_profile_.enabled = true;\n 160→ LOG_DEBUG(\"Loaded obfuscation seed\");\n 161→ }\n 162→ }\n 163→\n 164→ // NOTE: TUN device creation is deferred until after successful handshake\n 165→ // to avoid routing conflicts where handshake packets would be sent through\n 166→ // the VPN tunnel interface instead of the physical network interface.\n 167→\n 168→ // Open UDP socket.\n 169→ if (!udp_socket_.open(config_.local_port, true, ec)) {\n 170→ LOG_ERROR(\"Failed to open UDP socket: {}\", ec.message());\n 171→ return false;\n 172→ }\n 173→ // Log both requested and actual bound port (they differ if requested port was 0)\n 174→ std::uint16_t actual_port = udp_socket_.local_port();\n 175→ if (config_.local_port == 0) {\n 176→ LOG_INFO(\"UDP socket opened on random port {} (requested port 0)\", actual_port);\n 177→ } else {\n 178→ LOG_INFO(\"UDP socket opened on port {}\", actual_port);\n 179→ }\n 180→\n 181→ // Create event loop.\n 182→ event_loop_ = std::make_unique<transport::EventLoop>(config_.event_loop, now_fn_);\n 183→\n 184→ // Setup PMTU change callback.\n 185→ pmtu_discovery_.set_mtu_change_callback(\n 186→ [this](const std::string& peer, int old_mtu, int new_mtu) {\n 187→ handle_mtu_change(peer, old_mtu, new_mtu);\n 188→ });\n 189→\n 190→ set_state(ConnectionState::kDisconnected);\n 191→ LOG_INFO(\"Tunnel initialized successfully\");\n 192→ return true;\n 193→}\n 194→\n 195→void Tunnel::run() {\n 196→ if (running_.load()) {\n 197→ return;\n 198→ }\n 199→\n 200→ running_.store(true);\n 201→ LOG_INFO(\"Tunnel starting...\");\n 202→\n 203→#ifdef _WIN32\n 204→ // Setup console control handler (Windows).\n 205→ auto& console_handler = windows::ConsoleHandler::instance();\n 206→ if (!console_handler.setup()) {\n 207→ LOG_ERROR(\"Failed to setup console control handler\");\n 208→ running_.store(false);\n 209→ return;\n 210→ }\n 211→#else\n 212→ // Setup signal handlers (POSIX only).\n 213→ auto& sig_handler = signal::SignalHandler::instance();\n 214→ sig_handler.setup_defaults();\n 215→#endif\n 216→\n 217→ // Connect to server (for client mode).\n 218→ if (!config_.server_address.empty()) {\n 219→ set_state(ConnectionState::kConnecting);\n 220→\n 221→ std::error_code ec;\n 222→ transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n 223→ if (!udp_socket_.connect(remote, ec)) {\n 224→ LOG_ERROR(\"Failed to connect to server: {}\", ec.message());\n 225→ if (error_callback_) {\n 226→ error_callback_(\"Failed to connect: \" + ec.message());\n 227→ }\n 228→ set_state(ConnectionState::kDisconnected);\n 229→ running_.store(false);\n 230→ return;\n 231→ }\n 232→\n 233→ // Perform handshake.\n 234→ set_state(ConnectionState::kHandshaking);\n 235→ if (!perform_handshake(ec)) {\n 236→ LOG_ERROR(\"Handshake failed: {}\", ec.message());\n 237→ if (error_callback_) {\n 238→ error_callback_(\"Handshake failed: \" + ec.message());\n 239→ }\n 240→ handle_reconnect();\n 241→ } else {\n 242→ // Handshake succeeded - now create TUN device.\n 243→ LOG_INFO(\"Creating TUN device after successful handshake...\");\n 244→ if (!tun_device_.open(config_.tun, ec)) {\n 245→ LOG_ERROR(\"Failed to open TUN device: {}\", ec.message());\n 246→ if (error_callback_) {\n 247→ error_callback_(\"Failed to open TUN device: \" + ec.message());\n 248→ }\n 249→ set_state(ConnectionState::kDisconnected);\n 250→ running_.store(false);\n 251→ return;\n 252→ }\n 253→ LOG_INFO(\"TUN device {} opened with IP {}\", tun_device_.device_name(), config_.tun.ip_address);\n 254→\n 255→ set_state(ConnectionState::kConnected);\n 256→ stats_.connected_since = now_fn_();\n 257→ }\n 258→ }\n 259→\n 260→ // Main event loop.\n 261→ std::array<std::uint8_t, kMaxPacketSize> tun_buffer{};\n 262→\n 263→ // Diagnostic counters for periodic logging\n 264→ std::uint64_t loop_iterations = 0;\n 265→ std::uint64_t last_logged_tx = 0;\n 266→ std::uint64_t last_logged_rx = 0;\n 267→ auto last_diagnostic_log = now_fn_();\n 268→\n 269→ while (running_.load()\n 270→#ifdef _WIN32\n 271→ && !console_handler.should_terminate()\n 272→#else\n 273→ && !sig_handler.should_terminate()\n 274→#endif\n 275→ ) {\n 276→ std::error_code ec;\n 277→ loop_iterations++;\n 278→\n 279→ // Check TUN device for incoming packets (only if device is open).\n 280→ if (tun_device_.is_open()) {\n 281→ auto tun_read = tun_device_.read_into(tun_buffer, ec);\n 282→ if (tun_read > 0) {\n 283→ on_tun_packet(std::span<const std::uint8_t>(tun_buffer.data(), static_cast<std::size_t>(tun_read)));\n 284→ } else if (tun_read < 0) {\n 285→ LOG_ERROR(\"TUN read error: {}\", ec.message());\n 286→ stats_.tun_read_errors++;\n 287→ }\n 288→ }\n 289→\n 290→ // Poll UDP socket for incoming packets.\n 291→ if (!udp_socket_.poll(\n 292→ [this](const transport::UdpPacket& pkt) {\n 293→ on_udp_packet(pkt.data, pkt.remote);\n 294→ },\n 295→ 10, ec)) {\n 296→ LOG_ERROR(\"UDP poll failed: {}\", ec.message());\n 297→ }\n 298→\n 299→ // Periodic diagnostic logging (every 5 seconds when connected)\n 300→ auto now = now_fn_();\n 301→ auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(now - last_diagnostic_log);\n 302→ if (elapsed.count() >= 5 && state_.load() == ConnectionState::kConnected) {\n 303→ last_diagnostic_log = now;\n 304→\n 305→ // Log traffic stats if they changed\n 306→ if (stats_.udp_packets_sent != last_logged_tx || stats_.udp_packets_received != last_logged_rx) {\n 307→ LOG_INFO(\"Tunnel stats: packets_sent={}, packets_received={}, loops={}, decrypt_errors={}, encrypt_errors={}\",\n 308→ stats_.udp_packets_sent, stats_.udp_packets_received, loop_iterations,\n 309→ stats_.decrypt_errors, stats_.encrypt_errors);\n 310→ last_logged_tx = stats_.udp_packets_sent;\n 311→ last_logged_rx = stats_.udp_packets_received;\n 312→ }\n 313→\n 314→ // Warn if we're sending but not receiving\n 315→ if (stats_.udp_packets_sent > 10 && stats_.udp_packets_received == 0) {\n 316→ LOG_WARN(\"WARNING: Sending packets but receiving none! Check firewall and server connectivity.\");\n 317→ LOG_WARN(\" - Packets sent: {}, Packets received: {}\", stats_.udp_packets_sent, stats_.udp_packets_received);\n 318→ LOG_WARN(\" - Server: {}:{}\", config_.server_address, config_.server_port);\n 319→ }\n 320→ }\n 321→\n 322→ // Process session timers if we have an active session.\n 323→ if (session_) {\n 324→ // Check for retransmits.\n 325→ auto retransmits = session_->get_retransmit_packets();\n 326→ for (const auto& pkt : retransmits) {\n 327→ std::error_code send_ec;\n 328→ transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n 329→ if (!udp_socket_.send(pkt, remote, send_ec)) {\n 330→ LOG_WARN(\"Failed to send retransmit: {}\", send_ec.message());\n 331→ }\n 332→ }\n 333→\n 334→ // Check for session rotation.\n 335→ if (session_->should_rotate_session()) {\n 336→ session_->rotate_session();\n 337→ LOG_DEBUG(\"Session rotated\");\n 338→ }\n 339→ }\n 340→\n 341→ // Handle reconnection if needed.\n 342→ if (state_.load() == ConnectionState::kReconnecting) {\n 343→ handle_reconnect();\n 344→ }\n 345→\n 346→ stats_.last_activity = now_fn_();\n 347→ }\n 348→\n 349→ LOG_INFO(\"Tunnel stopping...\");\n 350→ set_state(ConnectionState::kDisconnected);\n 351→ running_.store(false);\n 352→}\n 353→\n 354→void Tunnel::stop() {\n 355→ running_.store(false);\n 356→ if (event_loop_) {\n 357→ event_loop_->stop();\n 358→ }\n 359→ LOG_INFO(\"Tunnel stopped\");\n 360→}\n 361→\n 362→void Tunnel::on_tun_packet(std::span<const std::uint8_t> packet) {\n 363→ stats_.tun_packets_received++;\n 364→ stats_.tun_bytes_received += packet.size();\n 365→\n 366→ if (!session_ || state_.load() != ConnectionState::kConnected) {\n 367→ return;\n 368→ }\n 369→\n 370→ // Encrypt and send through UDP.\n 371→ auto encrypted_packets = session_->encrypt_data(packet);\n 372→ for (const auto& enc_pkt : encrypted_packets) {\n 373→ std::error_code ec;\n 374→ transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n 375→ if (!udp_socket_.send(enc_pkt, remote, ec)) {\n 376→ LOG_WARN(\"Failed to send encrypted packet: {}\", ec.message());\n 377→ stats_.encrypt_errors++;\n 378→ continue;\n 379→ }\n 380→ stats_.udp_packets_sent++;\n 381→ stats_.udp_bytes_sent += enc_pkt.size();\n 382→ }\n 383→}\n 384→\n 385→void Tunnel::on_udp_packet(std::span<const std::uint8_t> packet,\n 386→ const transport::UdpEndpoint& remote) {\n 387→ stats_.udp_packets_received++;\n 388→ stats_.udp_bytes_received += packet.size();\n 389→\n 390→ if (!session_) {\n 391→ return;\n 392→ }\n 393→\n 394→ // Decrypt the packet.\n 395→ auto frames = session_->decrypt_packet(packet);\n 396→ if (!frames) {\n 397→ LOG_DEBUG(\"Failed to decrypt packet from {}:{}\", remote.host, remote.port);\n 398→ stats_.decrypt_errors++;\n 399→ return;\n 400→ }\n 401→\n 402→ // Process each frame.\n 403→ for (const auto& frame : *frames) {\n 404→ if (frame.kind == mux::FrameKind::kData) {\n 405→ // Write decrypted data to TUN device.\n 406→ std::error_code ec;\n 407→ if (!tun_device_.write(frame.data.payload, ec)) {\n 408→ LOG_ERROR(\"Failed to write to TUN: {}\", ec.message());\n 409→ stats_.tun_write_errors++;\n 410→ continue;\n 411→ }\n 412→ stats_.tun_packets_sent++;\n 413→ stats_.tun_bytes_sent += frame.data.payload.size();\n 414→\n 415→ // Log successful TUN write for diagnostics (helps debug Issue #74)\n 416→ // Use WARN level so logging is always visible regardless of build type\n 417→ if (frame.data.payload.size() >= 20) {\n 418→ // Extract destination IP from IPv4 header for logging\n 419→ std::uint32_t dst_ip = 0;\n 420→ dst_ip |= static_cast<std::uint32_t>(frame.data.payload[16]) << 24;\n 421→ dst_ip |= static_cast<std::uint32_t>(frame.data.payload[17]) << 16;\n 422→ dst_ip |= static_cast<std::uint32_t>(frame.data.payload[18]) << 8;\n 423→ dst_ip |= static_cast<std::uint32_t>(frame.data.payload[19]);\n 424→ LOG_WARN(\"TUN write: {} bytes -> {}.{}.{}.{}\",\n 425→ frame.data.payload.size(),\n 426→ (dst_ip >> 24) & 0xFF, (dst_ip >> 16) & 0xFF,\n 427→ (dst_ip >> 8) & 0xFF, dst_ip & 0xFF);\n 428→ } else {\n 429→ LOG_WARN(\"TUN write: {} bytes (packet too small for IPv4)\", frame.data.payload.size());\n 430→ }\n 431→\n 432→ // Send ACK back to server (Issue #72 fix)\n 433→ // Without ACKs, the server would keep retransmitting packets\n 434→ // IMPORTANT: Use encrypt_frame() instead of encrypt_data() to preserve the ACK frame kind.\n 435→ // encrypt_data() wraps data in a DATA frame, which would cause the receiver to\n 436→ // incorrectly interpret the ACK as data and try to write it to TUN.\n 437→ auto ack_info = session_->generate_ack(frame.data.stream_id);\n 438→ auto ack_frame = mux::make_ack_frame(ack_info.stream_id, ack_info.ack, ack_info.bitmap);\n 439→ auto ack_packet = session_->encrypt_frame(ack_frame);\n 440→ transport::UdpEndpoint server_endpoint{config_.server_address, config_.server_port};\n 441→ std::error_code send_ec;\n 442→ if (!udp_socket_.send(ack_packet, server_endpoint, send_ec)) {\n 443→ log_ack_send_error(send_ec);\n 444→ } else {\n 445→ log_ack_sent(ack_info.ack, ack_info.bitmap);\n 446→ }\n 447→ } else if (frame.kind == mux::FrameKind::kAck) {\n 448→ session_->process_ack(frame.ack);\n 449→ }\n 450→ }\n 451→\n 452→ // Update PMTU discovery.\n 453→ pmtu_discovery_.handle_probe_success(remote.host, static_cast<int>(packet.size()));\n 454→}\n 455→\n 456→bool Tunnel::perform_handshake(std::error_code& ec) {\n 457→ LOG_INFO(\"Performing handshake with {}:{}\", config_.server_address, config_.server_port);\n 458→\n 459→ // Validate PSK before attempting handshake\n 460→ if (config_.psk.empty()) {\n 461→ ec = std::make_error_code(std::errc::invalid_argument);\n 462→ LOG_ERROR(\"HANDSHAKE: PSK is empty - cannot perform handshake\");\n 463→ return false;\n 464→ }\n 465→ if (config_.psk.size() != 32) {\n 466→ ec = std::make_error_code(std::errc::invalid_argument);\n 467→ LOG_ERROR(\"HANDSHAKE: PSK size is {} bytes (expected 32)\", config_.psk.size());\n 468→ return false;\n 469→ }\n 470→ LOG_DEBUG(\"HANDSHAKE: PSK validated (32 bytes)\");\n 471→\n 472→ // Create handshake initiator.\n 473→ handshake::HandshakeInitiator initiator(config_.psk, config_.handshake_skew_tolerance);\n 474→\n 475→ // Generate INIT message.\n 476→ auto init_msg = initiator.create_init();\n 477→ if (init_msg.empty()) {\n 478→ ec = std::make_error_code(std::errc::protocol_error);\n 479→ LOG_ERROR(\"Failed to create handshake INIT message\");\n 480→ return false;\n 481→ }\n 482→\n 483→ LOG_INFO(\"========================================\");\n 484→ LOG_INFO(\"HANDSHAKE: Generated INIT message\");\n 485→ LOG_INFO(\" Size: {} bytes\", init_msg.size());\n 486→ LOG_INFO(\" Target: {}:{}\", config_.server_address, config_.server_port);\n 487→ // Log first few bytes of encrypted INIT for debugging (nonce is public, safe to log)\n 488→ if (init_msg.size() >= 12) {\n 489→ LOG_DEBUG(\" Nonce (first 12 bytes): {:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n 490→ init_msg[0], init_msg[1], init_msg[2], init_msg[3],\n 491→ init_msg[4], init_msg[5], init_msg[6], init_msg[7],\n 492→ init_msg[8], init_msg[9], init_msg[10], init_msg[11]);\n 493→ }\n 494→ LOG_INFO(\"========================================\");\n 495→\n 496→ // Send INIT message.\n 497→ transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n 498→ if (!udp_socket_.send(init_msg, remote, ec)) {\n 499→ LOG_ERROR(\"HANDSHAKE: Failed to send INIT: {}\", ec.message());\n 500→ return false;\n 501→ }\n 502→ LOG_INFO(\"HANDSHAKE: INIT sent successfully, waiting for RESPONSE...\");\n 503→\n 504→ // Wait for RESPONSE.\n 505→ // Use short polling intervals to allow checking running_ flag and respond quickly to stop().\n 506→ std::vector<std::uint8_t> response;\n 507→ bool received = false;\n 508→ transport::UdpEndpoint response_endpoint;\n 509→ int timeout_ms = static_cast<int>(config_.handshake_skew_tolerance.count());\n 510→ LOG_DEBUG(\"HANDSHAKE: Polling for response (timeout: {}ms)\", timeout_ms);\n 511→\n 512→ auto start_time = now_fn_();\n 513→ const auto timeout_duration = std::chrono::milliseconds(timeout_ms);\n 514→ constexpr int poll_interval_ms = 100; // Poll in 100ms chunks to check running_ flag.\n 515→\n 516→ while (!received && running_.load()) {\n 517→ auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now_fn_() - start_time);\n 518→ if (elapsed >= timeout_duration) {\n 519→ break; // Timeout reached.\n 520→ }\n 521→\n 522→ // Calculate remaining time, but don't exceed poll_interval_ms.\n 523→ auto remaining = timeout_duration - elapsed;\n 524→ int current_poll_ms = std::min(poll_interval_ms, static_cast<int>(remaining.count()));\n 525→\n 526→ udp_socket_.poll(\n 527→ [&response, &received, &response_endpoint](const transport::UdpPacket& pkt) {\n 528→ response = pkt.data;\n 529→ response_endpoint = pkt.remote;\n 530→ received = true;\n 531→ },\n 532→ current_poll_ms, ec);\n 533→\n 534→ if (received) {\n 535→ break; // Got response!\n 536→ }\n 537→\n 538→ // Check if we should stop (user pressed disconnect).\n 539→ if (!running_.load()) {\n 540→ LOG_INFO(\"HANDSHAKE: Aborted by user disconnect\");\n 541→ ec = std::make_error_code(std::errc::operation_canceled);\n 542→ return false;\n 543→ }\n 544→ }\n 545→\n 546→ if (!received || response.empty()) {\n 547→ ec = std::make_error_code(std::errc::timed_out);\n 548→ LOG_ERROR(\"HANDSHAKE: Timeout waiting for RESPONSE after {}ms\", timeout_ms);\n 549→ LOG_ERROR(\"HANDSHAKE: No packets received from server\");\n 550→ return false;\n 551→ }\n 552→\n 553→ LOG_INFO(\"HANDSHAKE: Received packet from {}:{}, size: {} bytes\",\n 554→ response_endpoint.host, response_endpoint.port, response.size());\n 555→\n 556→ // Process RESPONSE.\n 557→ auto hs_session = initiator.consume_response(response);\n 558→ if (!hs_session) {\n 559→ ec = std::make_error_code(std::errc::protocol_error);\n 560→ LOG_ERROR(\"Failed to process handshake RESPONSE\");\n 561→ return false;\n 562→ }\n 563→\n 564→ // Create transport session from handshake result.\n 565→ session_ = std::make_unique<transport::TransportSession>(*hs_session, config_.transport, now_fn_);\n 566→\n 567→ LOG_INFO(\"Handshake completed successfully, session ID: {}\", session_->session_id());\n 568→ return true;\n 569→}\n 570→\n 571→void Tunnel::set_state(ConnectionState new_state) {\n 572→ ConnectionState old_state = state_.exchange(new_state);\n 573→ if (old_state != new_state) {\n 574→ LOG_INFO(\"Connection state: {} -> {}\",\n 575→ static_cast<int>(old_state), static_cast<int>(new_state));\n 576→ if (state_change_callback_) {\n 577→ state_change_callback_(old_state, new_state);\n 578→ }\n 579→ }\n 580→}\n 581→\n 582→bool Tunnel::send_packet(std::span<const std::uint8_t> data) {\n 583→ if (!session_ || state_.load() != ConnectionState::kConnected) {\n 584→ return false;\n 585→ }\n 586→\n 587→ auto encrypted_packets = session_->encrypt_data(data);\n 588→ for (const auto& pkt : encrypted_packets) {\n 589→ std::error_code ec;\n 590→ transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n 591→ if (!udp_socket_.send(pkt, remote, ec)) {\n 592→ return false;\n 593→ }\n 594→ }\n 595→ return true;\n 596→}\n 597→\n 598→void Tunnel::handle_reconnect() {\n 599→ // Check if tunnel has been stopped - don't reconnect if user disconnected.\n 600→ if (!running_.load()) {\n 601→ LOG_DEBUG(\"Reconnect aborted: tunnel stopped\");\n 602→ set_state(ConnectionState::kDisconnected);\n 603→ return;\n 604→ }\n 605→\n 606→ if (!config_.auto_reconnect) {\n 607→ set_state(ConnectionState::kDisconnected);\n 608→ return;\n 609→ }\n 610→\n 611→ // Check if we've exceeded max attempts.\n 612→ if (config_.max_reconnect_attempts > 0 && reconnect_attempts_ >= config_.max_reconnect_attempts) {\n 613→ LOG_ERROR(\"Max reconnection attempts ({}) exceeded\", config_.max_reconnect_attempts);\n 614→ set_state(ConnectionState::kDisconnected);\n 615→ if (error_callback_) {\n 616→ error_callback_(\"Max reconnection attempts exceeded\");\n 617→ }\n 618→ return;\n 619→ }\n 620→\n 621→ // Check if enough time has passed since last attempt.\n 622→ auto now = now_fn_();\n 623→ auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - last_reconnect_attempt_);\n 624→ if (elapsed < config_.reconnect_delay) {\n 625→ return;\n 626→ }\n 627→\n 628→ reconnect_attempts_++;\n 629→ last_reconnect_attempt_ = now;\n 630→ LOG_INFO(\"Reconnection attempt {} (delay: {}ms)\", reconnect_attempts_,\n 631→ config_.reconnect_delay.count());\n 632→\n 633→ set_state(ConnectionState::kConnecting);\n 634→\n 635→ // Re-initialize socket.\n 636→ udp_socket_.close();\n 637→ std::error_code ec;\n 638→ if (!udp_socket_.open(config_.local_port, true, ec)) {\n 639→ LOG_ERROR(\"Failed to reopen UDP socket: {}\", ec.message());\n 640→ set_state(ConnectionState::kReconnecting);\n 641→ return;\n 642→ }\n 643→\n 644→ // Reconnect.\n 645→ transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n 646→ if (!udp_socket_.connect(remote, ec)) {\n 647→ LOG_ERROR(\"Failed to reconnect: {}\", ec.message());\n 648→ set_state(ConnectionState::kReconnecting);\n 649→ return;\n 650→ }\n 651→\n 652→ // Perform handshake.\n 653→ set_state(ConnectionState::kHandshaking);\n 654→ if (!perform_handshake(ec)) {\n 655→ LOG_ERROR(\"Reconnection handshake failed: {}\", ec.message());\n 656→ set_state(ConnectionState::kReconnecting);\n 657→ return;\n 658→ }\n 659→\n 660→ // Handshake succeeded - create TUN device if not already created.\n 661→ if (!tun_device_.is_open()) {\n 662→ LOG_INFO(\"Creating TUN device after successful reconnection...\");\n 663→ if (!tun_device_.open(config_.tun, ec)) {\n 664→ LOG_ERROR(\"Failed to open TUN device: {}\", ec.message());\n 665→ set_state(ConnectionState::kReconnecting);\n 666→ return;\n 667→ }\n 668→ LOG_INFO(\"TUN device {} opened with IP {}\", tun_device_.device_name(), config_.tun.ip_address);\n 669→ }\n 670→\n 671→ // Success!\n 672→ reconnect_attempts_ = 0;\n 673→ stats_.reconnect_count++;\n 674→ stats_.connected_since = now_fn_();\n 675→ set_state(ConnectionState::kConnected);\n 676→ LOG_INFO(\"Reconnected successfully\");\n 677→}\n 678→\n 679→void Tunnel::on_state_change(StateChangeCallback callback) {\n 680→ state_change_callback_ = std::move(callback);\n 681→}\n 682→\n 683→void Tunnel::on_error(ErrorCallback callback) { error_callback_ = std::move(callback); }\n 684→\n 685→void Tunnel::handle_mtu_change(const std::string& peer, int old_mtu, int new_mtu) {\n 686→ LOG_INFO(\"MTU changed for {}: {} -> {}\", peer, old_mtu, new_mtu);\n 687→ // Update TUN device MTU.\n 688→ std::error_code mtu_ec;\n 689→ if (!tun_device_.set_mtu(new_mtu, mtu_ec)) {\n 690→ LOG_WARN(\"Failed to update TUN MTU: {}\", mtu_ec.message());\n 691→ }\n 692→}\n 693→\n 694→} // namespace veil::tunnel\n 695→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"6ac110f2-5246-48ec-bb5d-4c5387d4b6ad","uuid":"b013b275-2f17-4dba-b8ae-28ecd629676f","tool_use_result":{"type":"text","file":{"filePath":"/tmp/gh-issue-solver-1769630568012/src/tunnel/tunnel.cpp","content":"#include \"tunnel/tunnel.h\"\n\n#include <array>\n#include <fstream>\n\n#include \"common/handshake/handshake_processor.h\"\n#include \"transport/mux/mux_codec.h\"\n#include \"common/logging/logger.h\"\n#ifndef _WIN32\n#include \"common/signal/signal_handler.h\"\n#else\n#include \"windows/console_handler.h\"\n#endif\n#include \"common/utils/rate_limiter.h\"\n\nnamespace veil::tunnel {\n\nnamespace {\nconstexpr std::size_t kMaxPacketSize = 65535;\n\n// Helper functions for ACK sending logging (Issue #72 fix)\n// These avoid the bugprone-lambda-function-name clang-tidy warning when LOG_* is used in lambdas\nvoid log_ack_send_error(const std::error_code& ec) {\n LOG_WARN(\"Failed to send ACK to server: {}\", ec.message());\n}\n\nvoid log_ack_sent([[maybe_unused]] std::uint64_t ack, [[maybe_unused]] std::uint32_t bitmap) {\n LOG_DEBUG(\"Sent ACK to server: ack={}, bitmap={:#010x}\", ack, bitmap);\n}\n\n// Helper to provide actionable error message for key file issues.\nstd::string format_key_error(const std::string& key_type, const std::string& path,\n const std::error_code& ec) {\n std::string msg = key_type + \" file '\" + path + \"' error: \" + ec.message() + \"\\n\";\n if (ec == std::errc::no_such_file_or_directory) {\n msg += \" To generate a new key, run:\\n\";\n msg += \" head -c 32 /dev/urandom > \" + path + \"\\n\";\n msg += \" Then copy this file securely to both server and client.\";\n } else if (ec == std::errc::permission_denied) {\n msg += \" Check file permissions with: ls -la \" + path + \"\\n\";\n msg += \" Ensure the file is readable by the current user.\";\n } else if (ec == std::errc::io_error) {\n msg += \" The key file must be exactly 32 bytes.\\n\";\n msg += \" Regenerate with: head -c 32 /dev/urandom > \" + path;\n }\n return msg;\n}\n\nbool load_key_from_file(const std::string& path, std::vector<std::uint8_t>& key,\n std::error_code& ec) {\n LOG_DEBUG(\"Loading key from file: {}\", path);\n std::ifstream file(path, std::ios::binary);\n if (!file) {\n ec = std::error_code(errno, std::generic_category());\n LOG_ERROR(\"Failed to open key file '{}': {}\", path, ec.message());\n return false;\n }\n\n // First, determine the file size\n file.seekg(0, std::ios::end);\n auto file_size = file.tellg();\n file.seekg(0, std::ios::beg);\n LOG_DEBUG(\"Key file size: {} bytes\", static_cast<long long>(file_size));\n\n if (file_size < 32) {\n LOG_ERROR(\"Key file '{}' is too small: {} bytes (expected at least 32)\", path,\n static_cast<long long>(file_size));\n ec = std::make_error_code(std::errc::io_error);\n return false;\n }\n\n if (file_size > 32) {\n LOG_WARN(\"Key file '{}' is {} bytes (expected 32). Only first 32 bytes will be used.\",\n path, static_cast<long long>(file_size));\n\n // Read all bytes to show what extra data is present\n std::vector<std::uint8_t> all_bytes(static_cast<size_t>(file_size));\n file.read(reinterpret_cast<char*>(all_bytes.data()), file_size);\n\n // Log hex dump of extra bytes to diagnose the issue\n if (file.gcount() == file_size && file_size > 32) {\n std::string extra_hex;\n for (size_t i = 32; i < static_cast<size_t>(file_size) && i < 44; ++i) {\n char buf[8];\n snprintf(buf, sizeof(buf), \"%02x \", all_bytes[i]);\n extra_hex += buf;\n }\n LOG_WARN(\" Extra bytes after position 32: {}\", extra_hex);\n LOG_WARN(\" This likely means the key file has Windows line endings (CRLF) or was edited in Notepad.\");\n LOG_WARN(\" FIX: The key should be exactly 32 bytes with no newlines or extra characters.\");\n LOG_WARN(\" To fix: Copy the raw hex/base64 value WITHOUT any newlines or spaces.\");\n }\n\n // Copy first 32 bytes to key\n key.assign(all_bytes.begin(), all_bytes.begin() + 32);\n } else {\n key.resize(32);\n file.read(reinterpret_cast<char*>(key.data()), static_cast<std::streamsize>(key.size()));\n if (file.gcount() != static_cast<std::streamsize>(key.size())) {\n LOG_ERROR(\"Failed to read 32 bytes from key file '{}': only {} bytes read\",\n path, file.gcount());\n ec = std::make_error_code(std::errc::io_error);\n return false;\n }\n }\n\n LOG_DEBUG(\"Successfully read 32 bytes from key file\");\n\n // Log hex dump of key for debugging (first 8 bytes only for security)\n if (key.size() >= 8) {\n LOG_DEBUG(\"Key file content (first 8 bytes): {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x}\",\n key[0], key[1], key[2], key[3], key[4], key[5], key[6], key[7]);\n }\n\n return true;\n}\n} // namespace\n\nTunnel::Tunnel(TunnelConfig config, std::function<TimePoint()> now_fn)\n : config_(std::move(config)), now_fn_(std::move(now_fn)), pmtu_discovery_(config_.pmtu, now_fn_) {}\n\nTunnel::~Tunnel() { stop(); }\n\nbool Tunnel::initialize(std::error_code& ec) {\n LOG_INFO(\"Initializing tunnel...\");\n\n // Load pre-shared key if specified.\n if (!config_.key_file.empty()) {\n if (!load_key_from_file(config_.key_file, config_.psk, ec)) {\n std::string error_msg = format_key_error(\"Pre-shared key\", config_.key_file, ec);\n LOG_ERROR(\"{}\", error_msg);\n return false;\n }\n LOG_DEBUG(\"Loaded pre-shared key from {}\", config_.key_file);\n // Log key fingerprint (first 4 bytes as hex) for debugging key mismatch issues\n // This helps verify the same key is being used on client and server\n // without revealing the full key\n if (config_.psk.size() >= 4) {\n LOG_DEBUG(\"PSK fingerprint (first 4 bytes): {:02x}{:02x}{:02x}{:02x}\",\n config_.psk[0], config_.psk[1], config_.psk[2], config_.psk[3]);\n }\n } else {\n LOG_WARN(\"No pre-shared key file specified - connection will fail!\");\n }\n\n // Generate ephemeral key pair for this session.\n key_pair_ = crypto::generate_x25519_keypair();\n LOG_DEBUG(\"Generated ephemeral key pair\");\n\n // Load obfuscation seed if specified.\n if (!config_.obfuscation_seed_file.empty()) {\n std::vector<std::uint8_t> seed;\n if (!load_key_from_file(config_.obfuscation_seed_file, seed, ec)) {\n LOG_WARN(\"Failed to load obfuscation seed: {}\", ec.message());\n // Continue without obfuscation seed.\n } else if (seed.size() >= obfuscation::kProfileSeedSize) {\n std::copy_n(seed.begin(), obfuscation::kProfileSeedSize,\n obfuscation_profile_.profile_seed.begin());\n obfuscation_profile_.enabled = true;\n LOG_DEBUG(\"Loaded obfuscation seed\");\n }\n }\n\n // NOTE: TUN device creation is deferred until after successful handshake\n // to avoid routing conflicts where handshake packets would be sent through\n // the VPN tunnel interface instead of the physical network interface.\n\n // Open UDP socket.\n if (!udp_socket_.open(config_.local_port, true, ec)) {\n LOG_ERROR(\"Failed to open UDP socket: {}\", ec.message());\n return false;\n }\n // Log both requested and actual bound port (they differ if requested port was 0)\n std::uint16_t actual_port = udp_socket_.local_port();\n if (config_.local_port == 0) {\n LOG_INFO(\"UDP socket opened on random port {} (requested port 0)\", actual_port);\n } else {\n LOG_INFO(\"UDP socket opened on port {}\", actual_port);\n }\n\n // Create event loop.\n event_loop_ = std::make_unique<transport::EventLoop>(config_.event_loop, now_fn_);\n\n // Setup PMTU change callback.\n pmtu_discovery_.set_mtu_change_callback(\n [this](const std::string& peer, int old_mtu, int new_mtu) {\n handle_mtu_change(peer, old_mtu, new_mtu);\n });\n\n set_state(ConnectionState::kDisconnected);\n LOG_INFO(\"Tunnel initialized successfully\");\n return true;\n}\n\nvoid Tunnel::run() {\n if (running_.load()) {\n return;\n }\n\n running_.store(true);\n LOG_INFO(\"Tunnel starting...\");\n\n#ifdef _WIN32\n // Setup console control handler (Windows).\n auto& console_handler = windows::ConsoleHandler::instance();\n if (!console_handler.setup()) {\n LOG_ERROR(\"Failed to setup console control handler\");\n running_.store(false);\n return;\n }\n#else\n // Setup signal handlers (POSIX only).\n auto& sig_handler = signal::SignalHandler::instance();\n sig_handler.setup_defaults();\n#endif\n\n // Connect to server (for client mode).\n if (!config_.server_address.empty()) {\n set_state(ConnectionState::kConnecting);\n\n std::error_code ec;\n transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n if (!udp_socket_.connect(remote, ec)) {\n LOG_ERROR(\"Failed to connect to server: {}\", ec.message());\n if (error_callback_) {\n error_callback_(\"Failed to connect: \" + ec.message());\n }\n set_state(ConnectionState::kDisconnected);\n running_.store(false);\n return;\n }\n\n // Perform handshake.\n set_state(ConnectionState::kHandshaking);\n if (!perform_handshake(ec)) {\n LOG_ERROR(\"Handshake failed: {}\", ec.message());\n if (error_callback_) {\n error_callback_(\"Handshake failed: \" + ec.message());\n }\n handle_reconnect();\n } else {\n // Handshake succeeded - now create TUN device.\n LOG_INFO(\"Creating TUN device after successful handshake...\");\n if (!tun_device_.open(config_.tun, ec)) {\n LOG_ERROR(\"Failed to open TUN device: {}\", ec.message());\n if (error_callback_) {\n error_callback_(\"Failed to open TUN device: \" + ec.message());\n }\n set_state(ConnectionState::kDisconnected);\n running_.store(false);\n return;\n }\n LOG_INFO(\"TUN device {} opened with IP {}\", tun_device_.device_name(), config_.tun.ip_address);\n\n set_state(ConnectionState::kConnected);\n stats_.connected_since = now_fn_();\n }\n }\n\n // Main event loop.\n std::array<std::uint8_t, kMaxPacketSize> tun_buffer{};\n\n // Diagnostic counters for periodic logging\n std::uint64_t loop_iterations = 0;\n std::uint64_t last_logged_tx = 0;\n std::uint64_t last_logged_rx = 0;\n auto last_diagnostic_log = now_fn_();\n\n while (running_.load()\n#ifdef _WIN32\n && !console_handler.should_terminate()\n#else\n && !sig_handler.should_terminate()\n#endif\n ) {\n std::error_code ec;\n loop_iterations++;\n\n // Check TUN device for incoming packets (only if device is open).\n if (tun_device_.is_open()) {\n auto tun_read = tun_device_.read_into(tun_buffer, ec);\n if (tun_read > 0) {\n on_tun_packet(std::span<const std::uint8_t>(tun_buffer.data(), static_cast<std::size_t>(tun_read)));\n } else if (tun_read < 0) {\n LOG_ERROR(\"TUN read error: {}\", ec.message());\n stats_.tun_read_errors++;\n }\n }\n\n // Poll UDP socket for incoming packets.\n if (!udp_socket_.poll(\n [this](const transport::UdpPacket& pkt) {\n on_udp_packet(pkt.data, pkt.remote);\n },\n 10, ec)) {\n LOG_ERROR(\"UDP poll failed: {}\", ec.message());\n }\n\n // Periodic diagnostic logging (every 5 seconds when connected)\n auto now = now_fn_();\n auto elapsed = std::chrono::duration_cast<std::chrono::seconds>(now - last_diagnostic_log);\n if (elapsed.count() >= 5 && state_.load() == ConnectionState::kConnected) {\n last_diagnostic_log = now;\n\n // Log traffic stats if they changed\n if (stats_.udp_packets_sent != last_logged_tx || stats_.udp_packets_received != last_logged_rx) {\n LOG_INFO(\"Tunnel stats: packets_sent={}, packets_received={}, loops={}, decrypt_errors={}, encrypt_errors={}\",\n stats_.udp_packets_sent, stats_.udp_packets_received, loop_iterations,\n stats_.decrypt_errors, stats_.encrypt_errors);\n last_logged_tx = stats_.udp_packets_sent;\n last_logged_rx = stats_.udp_packets_received;\n }\n\n // Warn if we're sending but not receiving\n if (stats_.udp_packets_sent > 10 && stats_.udp_packets_received == 0) {\n LOG_WARN(\"WARNING: Sending packets but receiving none! Check firewall and server connectivity.\");\n LOG_WARN(\" - Packets sent: {}, Packets received: {}\", stats_.udp_packets_sent, stats_.udp_packets_received);\n LOG_WARN(\" - Server: {}:{}\", config_.server_address, config_.server_port);\n }\n }\n\n // Process session timers if we have an active session.\n if (session_) {\n // Check for retransmits.\n auto retransmits = session_->get_retransmit_packets();\n for (const auto& pkt : retransmits) {\n std::error_code send_ec;\n transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n if (!udp_socket_.send(pkt, remote, send_ec)) {\n LOG_WARN(\"Failed to send retransmit: {}\", send_ec.message());\n }\n }\n\n // Check for session rotation.\n if (session_->should_rotate_session()) {\n session_->rotate_session();\n LOG_DEBUG(\"Session rotated\");\n }\n }\n\n // Handle reconnection if needed.\n if (state_.load() == ConnectionState::kReconnecting) {\n handle_reconnect();\n }\n\n stats_.last_activity = now_fn_();\n }\n\n LOG_INFO(\"Tunnel stopping...\");\n set_state(ConnectionState::kDisconnected);\n running_.store(false);\n}\n\nvoid Tunnel::stop() {\n running_.store(false);\n if (event_loop_) {\n event_loop_->stop();\n }\n LOG_INFO(\"Tunnel stopped\");\n}\n\nvoid Tunnel::on_tun_packet(std::span<const std::uint8_t> packet) {\n stats_.tun_packets_received++;\n stats_.tun_bytes_received += packet.size();\n\n if (!session_ || state_.load() != ConnectionState::kConnected) {\n return;\n }\n\n // Encrypt and send through UDP.\n auto encrypted_packets = session_->encrypt_data(packet);\n for (const auto& enc_pkt : encrypted_packets) {\n std::error_code ec;\n transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n if (!udp_socket_.send(enc_pkt, remote, ec)) {\n LOG_WARN(\"Failed to send encrypted packet: {}\", ec.message());\n stats_.encrypt_errors++;\n continue;\n }\n stats_.udp_packets_sent++;\n stats_.udp_bytes_sent += enc_pkt.size();\n }\n}\n\nvoid Tunnel::on_udp_packet(std::span<const std::uint8_t> packet,\n const transport::UdpEndpoint& remote) {\n stats_.udp_packets_received++;\n stats_.udp_bytes_received += packet.size();\n\n if (!session_) {\n return;\n }\n\n // Decrypt the packet.\n auto frames = session_->decrypt_packet(packet);\n if (!frames) {\n LOG_DEBUG(\"Failed to decrypt packet from {}:{}\", remote.host, remote.port);\n stats_.decrypt_errors++;\n return;\n }\n\n // Process each frame.\n for (const auto& frame : *frames) {\n if (frame.kind == mux::FrameKind::kData) {\n // Write decrypted data to TUN device.\n std::error_code ec;\n if (!tun_device_.write(frame.data.payload, ec)) {\n LOG_ERROR(\"Failed to write to TUN: {}\", ec.message());\n stats_.tun_write_errors++;\n continue;\n }\n stats_.tun_packets_sent++;\n stats_.tun_bytes_sent += frame.data.payload.size();\n\n // Log successful TUN write for diagnostics (helps debug Issue #74)\n // Use WARN level so logging is always visible regardless of build type\n if (frame.data.payload.size() >= 20) {\n // Extract destination IP from IPv4 header for logging\n std::uint32_t dst_ip = 0;\n dst_ip |= static_cast<std::uint32_t>(frame.data.payload[16]) << 24;\n dst_ip |= static_cast<std::uint32_t>(frame.data.payload[17]) << 16;\n dst_ip |= static_cast<std::uint32_t>(frame.data.payload[18]) << 8;\n dst_ip |= static_cast<std::uint32_t>(frame.data.payload[19]);\n LOG_WARN(\"TUN write: {} bytes -> {}.{}.{}.{}\",\n frame.data.payload.size(),\n (dst_ip >> 24) & 0xFF, (dst_ip >> 16) & 0xFF,\n (dst_ip >> 8) & 0xFF, dst_ip & 0xFF);\n } else {\n LOG_WARN(\"TUN write: {} bytes (packet too small for IPv4)\", frame.data.payload.size());\n }\n\n // Send ACK back to server (Issue #72 fix)\n // Without ACKs, the server would keep retransmitting packets\n // IMPORTANT: Use encrypt_frame() instead of encrypt_data() to preserve the ACK frame kind.\n // encrypt_data() wraps data in a DATA frame, which would cause the receiver to\n // incorrectly interpret the ACK as data and try to write it to TUN.\n auto ack_info = session_->generate_ack(frame.data.stream_id);\n auto ack_frame = mux::make_ack_frame(ack_info.stream_id, ack_info.ack, ack_info.bitmap);\n auto ack_packet = session_->encrypt_frame(ack_frame);\n transport::UdpEndpoint server_endpoint{config_.server_address, config_.server_port};\n std::error_code send_ec;\n if (!udp_socket_.send(ack_packet, server_endpoint, send_ec)) {\n log_ack_send_error(send_ec);\n } else {\n log_ack_sent(ack_info.ack, ack_info.bitmap);\n }\n } else if (frame.kind == mux::FrameKind::kAck) {\n session_->process_ack(frame.ack);\n }\n }\n\n // Update PMTU discovery.\n pmtu_discovery_.handle_probe_success(remote.host, static_cast<int>(packet.size()));\n}\n\nbool Tunnel::perform_handshake(std::error_code& ec) {\n LOG_INFO(\"Performing handshake with {}:{}\", config_.server_address, config_.server_port);\n\n // Validate PSK before attempting handshake\n if (config_.psk.empty()) {\n ec = std::make_error_code(std::errc::invalid_argument);\n LOG_ERROR(\"HANDSHAKE: PSK is empty - cannot perform handshake\");\n return false;\n }\n if (config_.psk.size() != 32) {\n ec = std::make_error_code(std::errc::invalid_argument);\n LOG_ERROR(\"HANDSHAKE: PSK size is {} bytes (expected 32)\", config_.psk.size());\n return false;\n }\n LOG_DEBUG(\"HANDSHAKE: PSK validated (32 bytes)\");\n\n // Create handshake initiator.\n handshake::HandshakeInitiator initiator(config_.psk, config_.handshake_skew_tolerance);\n\n // Generate INIT message.\n auto init_msg = initiator.create_init();\n if (init_msg.empty()) {\n ec = std::make_error_code(std::errc::protocol_error);\n LOG_ERROR(\"Failed to create handshake INIT message\");\n return false;\n }\n\n LOG_INFO(\"========================================\");\n LOG_INFO(\"HANDSHAKE: Generated INIT message\");\n LOG_INFO(\" Size: {} bytes\", init_msg.size());\n LOG_INFO(\" Target: {}:{}\", config_.server_address, config_.server_port);\n // Log first few bytes of encrypted INIT for debugging (nonce is public, safe to log)\n if (init_msg.size() >= 12) {\n LOG_DEBUG(\" Nonce (first 12 bytes): {:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n init_msg[0], init_msg[1], init_msg[2], init_msg[3],\n init_msg[4], init_msg[5], init_msg[6], init_msg[7],\n init_msg[8], init_msg[9], init_msg[10], init_msg[11]);\n }\n LOG_INFO(\"========================================\");\n\n // Send INIT message.\n transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n if (!udp_socket_.send(init_msg, remote, ec)) {\n LOG_ERROR(\"HANDSHAKE: Failed to send INIT: {}\", ec.message());\n return false;\n }\n LOG_INFO(\"HANDSHAKE: INIT sent successfully, waiting for RESPONSE...\");\n\n // Wait for RESPONSE.\n // Use short polling intervals to allow checking running_ flag and respond quickly to stop().\n std::vector<std::uint8_t> response;\n bool received = false;\n transport::UdpEndpoint response_endpoint;\n int timeout_ms = static_cast<int>(config_.handshake_skew_tolerance.count());\n LOG_DEBUG(\"HANDSHAKE: Polling for response (timeout: {}ms)\", timeout_ms);\n\n auto start_time = now_fn_();\n const auto timeout_duration = std::chrono::milliseconds(timeout_ms);\n constexpr int poll_interval_ms = 100; // Poll in 100ms chunks to check running_ flag.\n\n while (!received && running_.load()) {\n auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now_fn_() - start_time);\n if (elapsed >= timeout_duration) {\n break; // Timeout reached.\n }\n\n // Calculate remaining time, but don't exceed poll_interval_ms.\n auto remaining = timeout_duration - elapsed;\n int current_poll_ms = std::min(poll_interval_ms, static_cast<int>(remaining.count()));\n\n udp_socket_.poll(\n [&response, &received, &response_endpoint](const transport::UdpPacket& pkt) {\n response = pkt.data;\n response_endpoint = pkt.remote;\n received = true;\n },\n current_poll_ms, ec);\n\n if (received) {\n break; // Got response!\n }\n\n // Check if we should stop (user pressed disconnect).\n if (!running_.load()) {\n LOG_INFO(\"HANDSHAKE: Aborted by user disconnect\");\n ec = std::make_error_code(std::errc::operation_canceled);\n return false;\n }\n }\n\n if (!received || response.empty()) {\n ec = std::make_error_code(std::errc::timed_out);\n LOG_ERROR(\"HANDSHAKE: Timeout waiting for RESPONSE after {}ms\", timeout_ms);\n LOG_ERROR(\"HANDSHAKE: No packets received from server\");\n return false;\n }\n\n LOG_INFO(\"HANDSHAKE: Received packet from {}:{}, size: {} bytes\",\n response_endpoint.host, response_endpoint.port, response.size());\n\n // Process RESPONSE.\n auto hs_session = initiator.consume_response(response);\n if (!hs_session) {\n ec = std::make_error_code(std::errc::protocol_error);\n LOG_ERROR(\"Failed to process handshake RESPONSE\");\n return false;\n }\n\n // Create transport session from handshake result.\n session_ = std::make_unique<transport::TransportSession>(*hs_session, config_.transport, now_fn_);\n\n LOG_INFO(\"Handshake completed successfully, session ID: {}\", session_->session_id());\n return true;\n}\n\nvoid Tunnel::set_state(ConnectionState new_state) {\n ConnectionState old_state = state_.exchange(new_state);\n if (old_state != new_state) {\n LOG_INFO(\"Connection state: {} -> {}\",\n static_cast<int>(old_state), static_cast<int>(new_state));\n if (state_change_callback_) {\n state_change_callback_(old_state, new_state);\n }\n }\n}\n\nbool Tunnel::send_packet(std::span<const std::uint8_t> data) {\n if (!session_ || state_.load() != ConnectionState::kConnected) {\n return false;\n }\n\n auto encrypted_packets = session_->encrypt_data(data);\n for (const auto& pkt : encrypted_packets) {\n std::error_code ec;\n transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n if (!udp_socket_.send(pkt, remote, ec)) {\n return false;\n }\n }\n return true;\n}\n\nvoid Tunnel::handle_reconnect() {\n // Check if tunnel has been stopped - don't reconnect if user disconnected.\n if (!running_.load()) {\n LOG_DEBUG(\"Reconnect aborted: tunnel stopped\");\n set_state(ConnectionState::kDisconnected);\n return;\n }\n\n if (!config_.auto_reconnect) {\n set_state(ConnectionState::kDisconnected);\n return;\n }\n\n // Check if we've exceeded max attempts.\n if (config_.max_reconnect_attempts > 0 && reconnect_attempts_ >= config_.max_reconnect_attempts) {\n LOG_ERROR(\"Max reconnection attempts ({}) exceeded\", config_.max_reconnect_attempts);\n set_state(ConnectionState::kDisconnected);\n if (error_callback_) {\n error_callback_(\"Max reconnection attempts exceeded\");\n }\n return;\n }\n\n // Check if enough time has passed since last attempt.\n auto now = now_fn_();\n auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - last_reconnect_attempt_);\n if (elapsed < config_.reconnect_delay) {\n return;\n }\n\n reconnect_attempts_++;\n last_reconnect_attempt_ = now;\n LOG_INFO(\"Reconnection attempt {} (delay: {}ms)\", reconnect_attempts_,\n config_.reconnect_delay.count());\n\n set_state(ConnectionState::kConnecting);\n\n // Re-initialize socket.\n udp_socket_.close();\n std::error_code ec;\n if (!udp_socket_.open(config | |
| [2026-01-28T20:05:00.167Z] [INFO] _.local_port, true, ec)) {\n LOG_ERROR(\"Failed to reopen UDP socket: {}\", ec.message());\n set_state(ConnectionState::kReconnecting);\n return;\n }\n\n // Reconnect.\n transport::UdpEndpoint remote{config_.server_address, config_.server_port};\n if (!udp_socket_.connect(remote, ec)) {\n LOG_ERROR(\"Failed to reconnect: {}\", ec.message());\n set_state(ConnectionState::kReconnecting);\n return;\n }\n\n // Perform handshake.\n set_state(ConnectionState::kHandshaking);\n if (!perform_handshake(ec)) {\n LOG_ERROR(\"Reconnection handshake failed: {}\", ec.message());\n set_state(ConnectionState::kReconnecting);\n return;\n }\n\n // Handshake succeeded - create TUN device if not already created.\n if (!tun_device_.is_open()) {\n LOG_INFO(\"Creating TUN device after successful reconnection...\");\n if (!tun_device_.open(config_.tun, ec)) {\n LOG_ERROR(\"Failed to open TUN device: {}\", ec.message());\n set_state(ConnectionState::kReconnecting);\n return;\n }\n LOG_INFO(\"TUN device {} opened with IP {}\", tun_device_.device_name(), config_.tun.ip_address);\n }\n\n // Success!\n reconnect_attempts_ = 0;\n stats_.reconnect_count++;\n stats_.connected_since = now_fn_();\n set_state(ConnectionState::kConnected);\n LOG_INFO(\"Reconnected successfully\");\n}\n\nvoid Tunnel::on_state_change(StateChangeCallback callback) {\n state_change_callback_ = std::move(callback);\n}\n\nvoid Tunnel::on_error(ErrorCallback callback) { error_callback_ = std::move(callback); }\n\nvoid Tunnel::handle_mtu_change(const std::string& peer, int old_mtu, int new_mtu) {\n LOG_INFO(\"MTU changed for {}: {} -> {}\", peer, old_mtu, new_mtu);\n // Update TUN device MTU.\n std::error_code mtu_ec;\n if (!tun_device_.set_mtu(new_mtu, mtu_ec)) {\n LOG_WARN(\"Failed to update TUN MTU: {}\", mtu_ec.message());\n }\n}\n\n} // namespace veil::tunnel\n","numLines":695,"startLine":1,"totalLines":695}}} | |
| [2026-01-28T20:05:04.195Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01U6cHSCwQw44jvPJctKQy4h", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "Now I see the packet flow on the client side. Looking at line 407:\n```cpp\nif (!tun_device_.write(frame.data.payload, ec)) {\n```\n\nThe payload from the data frame is being written directly to TUN. Now I need to understand why some payloads appear to contain garbage. Let me look at the transport session to understand how decryption works." | |
| } | |
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| "service_tier": "standard" | |
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| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "d275cbe0-5921-46e4-8c42-e3d0f86bd752" | |
| } | |
| [2026-01-28T20:05:05.126Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01U6cHSCwQw44jvPJctKQy4h", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01RvxoXaLs1ztLQmANc8pjNP", | |
| "name": "Read", | |
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| "file_path": "/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp" | |
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| } | |
| [2026-01-28T20:05:05.145Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01RvxoXaLs1ztLQmANc8pjNP","type":"tool_result","content":" 1→#include \"transport/session/transport_session.h\"\n 2→\n 3→#include <sodium.h>\n 4→\n 5→#include <algorithm>\n 6→#include <cassert>\n 7→#include <chrono>\n 8→#include <cstdint>\n 9→#include <limits>\n 10→#include <optional>\n 11→#include <span>\n 12→#include <utility>\n 13→#include <vector>\n 14→\n 15→#include \"common/crypto/crypto_engine.h\"\n 16→#include \"common/crypto/random.h\"\n 17→#include \"common/logging/logger.h\"\n 18→\n 19→// SECURITY: Nonce overflow threshold.\n 20→// With uint64_t, we can send 2^64 packets before overflow. At 10 Gbps with 1KB packets,\n 21→// this would take over 58 million years. However, we set a conservative threshold to\n 22→// detect any anomalies or implementation bugs that might cause rapid sequence growth.\n 23→// This threshold triggers a warning well before any practical risk of overflow.\n 24→constexpr std::uint64_t kNonceOverflowWarningThreshold = std::numeric_limits<std::uint64_t>::max() - (1ULL << 32);\n 25→\n 26→namespace veil::transport {\n 27→\n 28→TransportSession::TransportSession(const handshake::HandshakeSession& handshake_session,\n 29→ TransportSessionConfig config, std::function<TimePoint()> now_fn)\n 30→ : config_(config),\n 31→ now_fn_(std::move(now_fn)),\n 32→ keys_(handshake_session.keys),\n 33→ current_session_id_(handshake_session.session_id),\n 34→ send_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.send_key, keys_.send_nonce)),\n 35→ recv_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.recv_key, keys_.recv_nonce)),\n 36→ replay_window_(config_.replay_window_size),\n 37→ session_rotator_(config_.session_rotation_interval, config_.session_rotation_packets),\n 38→ reorder_buffer_(0, config_.reorder_buffer_size),\n 39→ fragment_reassembly_(config_.fragment_buffer_size),\n 40→ retransmit_buffer_(config_.retransmit_config, now_fn_) {\n 41→ // Enhanced diagnostic logging for session creation (Issue #69, #72)\n 42→ // Use INFO level so key fingerprints are always logged, not just in verbose mode\n 43→ // This helps diagnose key mismatch issues between client and server\n 44→ LOG_INFO(\"TransportSession created: session_id={}\", current_session_id_);\n 45→ LOG_INFO(\" send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n 46→ keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n 47→ keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n 48→ LOG_INFO(\" recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n 49→ keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n 50→ keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n 51→ LOG_INFO(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n 52→ send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n 53→ send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3],\n 54→ recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n 55→ recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3]);\n 56→}\n 57→\n 58→TransportSession::~TransportSession() {\n 59→ // SECURITY: Clear all session key material on destruction\n 60→ sodium_memzero(keys_.send_key.data(), keys_.send_key.size());\n 61→ sodium_memzero(keys_.recv_key.data(), keys_.recv_key.size());\n 62→ sodium_memzero(keys_.send_nonce.data(), keys_.send_nonce.size());\n 63→ sodium_memzero(keys_.recv_nonce.data(), keys_.recv_nonce.size());\n 64→ sodium_memzero(send_seq_obfuscation_key_.data(), send_seq_obfuscation_key_.size());\n 65→ sodium_memzero(recv_seq_obfuscation_key_.data(), recv_seq_obfuscation_key_.size());\n 66→ LOG_DEBUG(\"TransportSession destroyed, keys cleared\");\n 67→}\n 68→\n 69→std::vector<std::vector<std::uint8_t>> TransportSession::encrypt_data(\n 70→ std::span<const std::uint8_t> plaintext, std::uint64_t stream_id, bool fin) {\n 71→ VEIL_DCHECK_THREAD(thread_checker_);\n 72→\n 73→ std::vector<std::vector<std::uint8_t>> result;\n 74→\n 75→ // Fragment data if necessary.\n 76→ auto frames = fragment_data(plaintext, stream_id, fin);\n 77→\n 78→ for (auto& frame : frames) {\n 79→ auto encrypted = build_encrypted_packet(frame);\n 80→\n 81→ // Store in retransmit buffer.\n 82→ if (retransmit_buffer_.has_capacity(encrypted.size())) {\n 83→ retransmit_buffer_.insert(send_sequence_ - 1, encrypted);\n 84→ }\n 85→\n 86→ ++stats_.packets_sent;\n 87→ stats_.bytes_sent += encrypted.size();\n 88→ if (frame.kind == mux::FrameKind::kData) {\n 89→ ++stats_.fragments_sent;\n 90→ }\n 91→\n 92→ result.push_back(std::move(encrypted));\n 93→ ++packets_since_rotation_;\n 94→ }\n 95→\n 96→ return result;\n 97→}\n 98→\n 99→std::vector<std::uint8_t> TransportSession::encrypt_frame(const mux::MuxFrame& frame) {\n 100→ VEIL_DCHECK_THREAD(thread_checker_);\n 101→\n 102→ // Use the existing build_encrypted_packet method which properly encrypts any frame type.\n 103→ // This preserves the frame's original kind (ACK, control, heartbeat, etc.) without wrapping\n 104→ // it in a DATA frame like encrypt_data() does.\n 105→ auto encrypted = build_encrypted_packet(frame);\n 106→\n 107→ // Update statistics for non-data frames (data frame stats are updated in encrypt_data)\n 108→ ++stats_.packets_sent;\n 109→ stats_.bytes_sent += encrypted.size();\n 110→ ++packets_since_rotation_;\n 111→\n 112→ return encrypted;\n 113→}\n 114→\n 115→std::optional<std::vector<mux::MuxFrame>> TransportSession::decrypt_packet(\n 116→ std::span<const std::uint8_t> ciphertext) {\n 117→ VEIL_DCHECK_THREAD(thread_checker_);\n 118→\n 119→ // Minimum packet size: nonce (8 bytes for sequence) + tag (16 bytes) + header (1 byte minimum)\n 120→ constexpr std::size_t kMinPacketSize = 8 + 16 + 1;\n 121→ if (ciphertext.size() < kMinPacketSize) {\n 122→ LOG_DEBUG(\"Packet too small: {} bytes\", ciphertext.size());\n 123→ ++stats_.packets_dropped_decrypt;\n 124→ return std::nullopt;\n 125→ }\n 126→\n 127→ // Extract obfuscated sequence from first 8 bytes.\n 128→ std::uint64_t obfuscated_sequence = 0;\n 129→ for (int i = 0; i < 8; ++i) {\n 130→ obfuscated_sequence = (obfuscated_sequence << 8) | ciphertext[static_cast<std::size_t>(i)];\n 131→ }\n 132→\n 133→ // DPI RESISTANCE (Issue #21): Deobfuscate sequence number.\n 134→ // The sender obfuscated the sequence to prevent traffic analysis. We reverse the\n 135→ // obfuscation here to recover the real sequence for nonce derivation and replay checking.\n 136→ const std::uint64_t sequence = crypto::deobfuscate_sequence(obfuscated_sequence, recv_seq_obfuscation_key_);\n 137→\n 138→ // Enhanced diagnostic logging for decryption debugging (Issue #69, #72)\n 139→ // Use WARN level temporarily to trace decryption flow in production\n 140→ LOG_WARN(\"Decrypt attempt: session_id={}, pkt_size={}, obfuscated_seq={:#018x}, deobfuscated_seq={}\",\n 141→ current_session_id_, ciphertext.size(), obfuscated_sequence, sequence);\n 142→ LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_8_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n 143→ recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n 144→ recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n 145→ ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n 146→ ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n 147→\n 148→ // Replay check.\n 149→ if (!replay_window_.mark_and_check(sequence)) {\n 150→ LOG_WARN(\"Packet replay detected or out of window: sequence={}, highest={}\",\n 151→ sequence, replay_window_.highest());\n 152→ ++stats_.packets_dropped_replay;\n 153→ return std::nullopt;\n 154→ }\n 155→ LOG_WARN(\"Replay check passed, proceeding to decryption\");\n 156→\n 157→ // Derive nonce from sequence.\n 158→ const auto nonce = crypto::derive_nonce(keys_.recv_nonce, sequence);\n 159→\n 160→ // Decrypt (skip sequence prefix).\n 161→ auto ciphertext_body = ciphertext.subspan(8);\n 162→ auto decrypted = crypto::aead_decrypt(keys_.recv_key, nonce, {}, ciphertext_body);\n 163→ if (!decrypted) {\n 164→ // Enhanced error logging for decryption failures (Issue #69, #72)\n 165→ // Use WARN level so this always appears, not just in verbose mode\n 166→ // Log key fingerprints (first 4 bytes) to help diagnose key mismatch issues\n 167→ LOG_WARN(\"Decryption FAILED: session_id={}, sequence={}, ciphertext_size={}, \"\n 168→ \"recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n 169→ current_session_id_, sequence, ciphertext_body.size(),\n 170→ keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n 171→ keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n 172→ // Also log the obfuscation key fingerprint and packet header\n 173→ LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_pkt_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n 174→ recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n 175→ recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n 176→ ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n 177→ ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n 178→ ++stats_.packets_dropped_decrypt;\n 179→ return std::nullopt;\n 180→ }\n 181→\n 182→ // Enhanced diagnostic logging for decryption success (Issue #72)\n 183→ LOG_WARN(\"Decryption SUCCESS: session_id={}, sequence={}, decrypted_size={}\",\n 184→ current_session_id_, sequence, decrypted->size());\n 185→\n 186→ ++stats_.packets_received;\n 187→ stats_.bytes_received += ciphertext.size();\n 188→\n 189→ // Parse mux frames from decrypted data.\n 190→ std::vector<mux::MuxFrame> frames;\n 191→ auto frame = mux::MuxCodec::decode(*decrypted);\n 192→ if (frame) {\n 193→ // Log frame details for debugging (Issue #72)\n 194→ LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n 195→ static_cast<int>(frame->kind),\n 196→ frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n 197→ frames.push_back(std::move(*frame));\n 198→\n 199→ if (frame->kind == mux::FrameKind::kData) {\n 200→ ++stats_.fragments_received;\n 201→ recv_ack_bitmap_.ack(sequence);\n 202→ }\n 203→ } else {\n 204→ // Log frame decode failure for debugging (Issue #72)\n 205→ LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n 206→ decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n 207→ }\n 208→\n 209→ if (sequence > recv_sequence_max_) {\n 210→ recv_sequence_max_ = sequence;\n 211→ }\n 212→\n 213→ return frames;\n 214→}\n 215→\n 216→std::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n 217→ VEIL_DCHECK_THREAD(thread_checker_);\n 218→\n 219→ std::vector<std::vector<std::uint8_t>> result;\n 220→ auto to_retransmit = retransmit_buffer_.get_packets_to_retransmit();\n 221→\n 222→ for (const auto* pkt : to_retransmit) {\n 223→ if (retransmit_buffer_.mark_retransmitted(pkt->sequence)) {\n 224→ result.push_back(pkt->data);\n 225→ ++stats_.retransmits;\n 226→ } else {\n 227→ // Exceeded max retries, drop packet.\n 228→ retransmit_buffer_.drop_packet(pkt->sequence);\n 229→ }\n 230→ }\n 231→\n 232→ return result;\n 233→}\n 234→\n 235→void TransportSession::process_ack(const mux::AckFrame& ack) {\n 236→ VEIL_DCHECK_THREAD(thread_checker_);\n 237→\n 238→ // Debug logging for ACK processing (Issue #72)\n 239→ LOG_WARN(\"process_ack called: stream_id={}, ack={}, bitmap={:#010x}, pending_before={}\",\n 240→ ack.stream_id, ack.ack, ack.bitmap, retransmit_buffer_.pending_count());\n 241→\n 242→ // Cumulative ACK.\n 243→ retransmit_buffer_.acknowledge_cumulative(ack.ack);\n 244→\n 245→ // Selective ACK from bitmap.\n 246→ for (std::uint32_t i = 0; i < 32; ++i) {\n 247→ if (((ack.bitmap >> i) & 1U) != 0U) {\n 248→ std::uint64_t seq = ack.ack - 1 - i;\n 249→ if (seq > 0) {\n 250→ retransmit_buffer_.acknowledge(seq);\n 251→ }\n 252→ }\n 253→ }\n 254→\n 255→ // Debug logging for ACK processing result (Issue #72)\n 256→ LOG_WARN(\"process_ack done: pending_after={}\", retransmit_buffer_.pending_count());\n 257→}\n 258→\n 259→mux::AckFrame TransportSession::generate_ack(std::uint64_t stream_id) {\n 260→ VEIL_DCHECK_THREAD(thread_checker_);\n 261→\n 262→ return mux::AckFrame{\n 263→ .stream_id = stream_id,\n 264→ .ack = recv_ack_bitmap_.head(),\n 265→ .bitmap = recv_ack_bitmap_.bitmap(),\n 266→ };\n 267→}\n 268→\n 269→bool TransportSession::should_rotate_session() {\n 270→ VEIL_DCHECK_THREAD(thread_checker_);\n 271→ return session_rotator_.should_rotate(packets_since_rotation_, now_fn_());\n 272→}\n 273→\n 274→void TransportSession::rotate_session() {\n 275→ VEIL_DCHECK_THREAD(thread_checker_);\n 276→\n 277→ // SECURITY: Capture sequence number before rotation for verification\n 278→ [[maybe_unused]] const auto sequence_before_rotation = send_sequence_;\n 279→\n 280→ current_session_id_ = session_rotator_.rotate(now_fn_());\n 281→ packets_since_rotation_ = 0;\n 282→ ++stats_.session_rotations;\n 283→\n 284→ // ===========================================================================\n 285→ // SECURITY-CRITICAL: NONCE COUNTER LIFECYCLE\n 286→ // ===========================================================================\n 287→ // The nonce for ChaCha20-Poly1305 is derived as:\n 288→ // nonce = derive_nonce(base_nonce, send_sequence_)\n 289→ //\n 290→ // Where derive_nonce XORs the counter into the last 8 bytes of base_nonce.\n 291→ //\n 292→ // CRITICAL INVARIANT: send_sequence_ MUST NEVER be reset.\n 293→ //\n 294→ // Why this matters:\n 295→ // - ChaCha20-Poly1305 security completely breaks if the same (key, nonce) pair\n 296→ // is ever used twice\n 297→ // - The encryption key (keys_.send_key) is derived once during handshake and\n 298→ // does NOT change during session rotation\n 299→ // - Session rotation only changes the session_id for protocol-level management\n 300→ //\n 301→ // Nonce uniqueness guarantee:\n 302→ // - send_sequence_ is uint64_t, allowing 2^64 unique nonces\n 303→ // - At 10 Gbps with 1KB packets, exhaustion would take ~58 million years\n 304→ // - send_sequence_ is incremented after each packet in build_encrypted_packet()\n 305→ // - It is NEVER reset or decremented\n 306→ //\n 307→ // This design was chosen over alternatives like:\n 308→ // - Rotating keys on session rotation: Would require re-handshake or key derivation\n 309→ // - Resetting counter with new base_nonce: Adds complexity, risk of implementation bugs\n 310→ // - Using random nonces: Requires tracking to prevent collisions (birthday bound)\n 311→ //\n 312→ // See also: Issue #3 - Verify nonce counter lifecycle on session rotation\n 313→ // ===========================================================================\n 314→\n 315→ // ASSERTION: Verify send_sequence_ was not reset (defense in depth)\n 316→ assert(send_sequence_ == sequence_before_rotation &&\n 317→ \"SECURITY VIOLATION: send_sequence_ must never be reset during rotation\");\n 318→\n 319→ LOG_DEBUG(\"Session rotated to session_id={}, send_sequence_={} (unchanged)\",\n 320→ current_session_id_, send_sequence_);\n 321→}\n 322→\n 323→std::vector<std::uint8_t> TransportSession::build_encrypted_packet(const mux::MuxFrame& frame) {\n 324→ // SECURITY: Check for sequence number overflow (extremely unlikely but provides defense in depth)\n 325→ // At 10 Gbps with 1KB packets, reaching this threshold would take millions of years,\n 326→ // but we check anyway to catch any implementation bugs that might cause unexpected growth.\n 327→ if (send_sequence_ >= kNonceOverflowWarningThreshold) {\n 328→ LOG_ERROR(\"SECURITY WARNING: send_sequence_ approaching overflow (current={}). \"\n 329→ \"Session should be re-established to prevent nonce reuse.\",\n 330→ send_sequence_);\n 331→ // Note: We log but continue - in practice this is unreachable under normal operation.\n 332→ // A production system might want to force session termination here.\n 333→ }\n 334→\n 335→ // Serialize the frame.\n 336→ auto plaintext = mux::MuxCodec::encode(frame);\n 337→\n 338→ // Derive nonce from current send sequence.\n 339→ // SECURITY: Each packet gets a unique nonce = base_nonce XOR send_sequence_\n 340→ // Since send_sequence_ is never reset and always increments, nonces are guaranteed unique.\n 341→ const auto nonce = crypto::derive_nonce(keys_.send_nonce, send_sequence_);\n 342→\n 343→ // Encrypt using ChaCha20-Poly1305 AEAD.\n 344→ auto ciphertext = crypto::aead_encrypt(keys_.send_key, nonce, {}, plaintext);\n 345→\n 346→ // DPI RESISTANCE (Issue #21): Obfuscate sequence number before transmission.\n 347→ // Previously, the sequence was sent in plaintext, creating a DPI signature (monotonically\n 348→ // increasing values). Now we obfuscate it using ChaCha20 with a session-specific key.\n 349→ // The receiver can deobfuscate using the same key to recover the sequence for nonce derivation.\n 350→ const std::uint64_t obfuscated_sequence = crypto::obfuscate_sequence(send_sequence_, send_seq_obfuscation_key_);\n 351→\n 352→ // Enhanced diagnostic logging for encryption (Issue #69)\n 353→ // Log key fingerprints (first 4 bytes) to help diagnose key mismatch between client and server\n 354→ LOG_DEBUG(\"Encrypt: session_id={}, sequence={}, obfuscated_seq={:#018x}, plaintext_size={}, \"\n 355→ \"send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n 356→ current_session_id_, send_sequence_, obfuscated_sequence, plaintext.size(),\n 357→ keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n 358→ keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n 359→ LOG_DEBUG(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n 360→ send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n 361→ send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3]);\n 362→\n 363→ // Prepend obfuscated sequence number (8 bytes big-endian).\n 364→ std::vector<std::uint8_t> packet;\n 365→ packet.reserve(8 + ciphertext.size());\n 366→ for (int i = 7; i >= 0; --i) {\n 367→ packet.push_back(static_cast<std::uint8_t>((obfuscated_sequence >> (8 * i)) & 0xFF));\n 368→ }\n 369→ packet.insert(packet.end(), ciphertext.begin(), ciphertext.end());\n 370→\n 371→ // SECURITY: Increment AFTER using the sequence number.\n 372→ // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n 373→ ++send_sequence_;\n 374→\n 375→ return packet;\n 376→}\n 377→\n 378→std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n 379→ std::uint64_t stream_id, bool fin) {\n 380→ std::vector<mux::MuxFrame> frames;\n 381→\n 382→ if (data.size() <= config_.max_fragment_size) {\n 383→ // No fragmentation needed.\n 384→ frames.push_back(mux::make_data_frame(\n 385→ stream_id, message_id_counter_++, fin,\n 386→ std::vector<std::uint8_t>(data.begin(), data.end())));\n 387→ return frames;\n 388→ }\n 389→\n 390→ // Fragment the data.\n 391→ const std::uint64_t msg_id = message_id_counter_++;\n 392→ std::size_t offset = 0;\n 393→ std::uint64_t frag_seq = 0;\n 394→\n 395→ while (offset < data.size()) {\n 396→ const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n 397→ const bool is_last = (offset + chunk_size >= data.size());\n 398→ const bool frag_fin = is_last && fin;\n 399→\n 400→ std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n 401→ data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n 402→\n 403→ // For fragmented messages, we use a special encoding in the sequence field.\n 404→ // High 32 bits: message ID, Low 32 bits: fragment index.\n 405→ const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n 406→\n 407→ frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n 408→\n 409→ offset += chunk_size;\n 410→ ++frag_seq;\n 411→ }\n 412→\n 413→ return frames;\n 414→}\n 415→\n 416→} // namespace veil::transport\n 417→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"6ac110f2-5246-48ec-bb5d-4c5387d4b6ad","uuid":"cc78ac5c-9a80-4f11-b114-e50b62d6e9da","tool_use_result":{"type":"text","file":{"filePath":"/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp","content":"#include \"transport/session/transport_session.h\"\n\n#include <sodium.h>\n\n#include <algorithm>\n#include <cassert>\n#include <chrono>\n#include <cstdint>\n#include <limits>\n#include <optional>\n#include <span>\n#include <utility>\n#include <vector>\n\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/crypto/random.h\"\n#include \"common/logging/logger.h\"\n\n// SECURITY: Nonce overflow threshold.\n// With uint64_t, we can send 2^64 packets before overflow. At 10 Gbps with 1KB packets,\n// this would take over 58 million years. However, we set a conservative threshold to\n// detect any anomalies or implementation bugs that might cause rapid sequence growth.\n// This threshold triggers a warning well before any practical risk of overflow.\nconstexpr std::uint64_t kNonceOverflowWarningThreshold = std::numeric_limits<std::uint64_t>::max() - (1ULL << 32);\n\nnamespace veil::transport {\n\nTransportSession::TransportSession(const handshake::HandshakeSession& handshake_session,\n TransportSessionConfig config, std::function<TimePoint()> now_fn)\n : config_(config),\n now_fn_(std::move(now_fn)),\n keys_(handshake_session.keys),\n current_session_id_(handshake_session.session_id),\n send_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.send_key, keys_.send_nonce)),\n recv_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.recv_key, keys_.recv_nonce)),\n replay_window_(config_.replay_window_size),\n session_rotator_(config_.session_rotation_interval, config_.session_rotation_packets),\n reorder_buffer_(0, config_.reorder_buffer_size),\n fragment_reassembly_(config_.fragment_buffer_size),\n retransmit_buffer_(config_.retransmit_config, now_fn_) {\n // Enhanced diagnostic logging for session creation (Issue #69, #72)\n // Use INFO level so key fingerprints are always logged, not just in verbose mode\n // This helps diagnose key mismatch issues between client and server\n LOG_INFO(\"TransportSession created: session_id={}\", current_session_id_);\n LOG_INFO(\" send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_INFO(\" recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n LOG_INFO(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3],\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3]);\n}\n\nTransportSession::~TransportSession() {\n // SECURITY: Clear all session key material on destruction\n sodium_memzero(keys_.send_key.data(), keys_.send_key.size());\n sodium_memzero(keys_.recv_key.data(), keys_.recv_key.size());\n sodium_memzero(keys_.send_nonce.data(), keys_.send_nonce.size());\n sodium_memzero(keys_.recv_nonce.data(), keys_.recv_nonce.size());\n sodium_memzero(send_seq_obfuscation_key_.data(), send_seq_obfuscation_key_.size());\n sodium_memzero(recv_seq_obfuscation_key_.data(), recv_seq_obfuscation_key_.size());\n LOG_DEBUG(\"TransportSession destroyed, keys cleared\");\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::encrypt_data(\n std::span<const std::uint8_t> plaintext, std::uint64_t stream_id, bool fin) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n\n // Fragment data if necessary.\n auto frames = fragment_data(plaintext, stream_id, fin);\n\n for (auto& frame : frames) {\n auto encrypted = build_encrypted_packet(frame);\n\n // Store in retransmit buffer.\n if (retransmit_buffer_.has_capacity(encrypted.size())) {\n retransmit_buffer_.insert(send_sequence_ - 1, encrypted);\n }\n\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n if (frame.kind == mux::FrameKind::kData) {\n ++stats_.fragments_sent;\n }\n\n result.push_back(std::move(encrypted));\n ++packets_since_rotation_;\n }\n\n return result;\n}\n\nstd::vector<std::uint8_t> TransportSession::encrypt_frame(const mux::MuxFrame& frame) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Use the existing build_encrypted_packet method which properly encrypts any frame type.\n // This preserves the frame's original kind (ACK, control, heartbeat, etc.) without wrapping\n // it in a DATA frame like encrypt_data() does.\n auto encrypted = build_encrypted_packet(frame);\n\n // Update statistics for non-data frames (data frame stats are updated in encrypt_data)\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n ++packets_since_rotation_;\n\n return encrypted;\n}\n\nstd::optional<std::vector<mux::MuxFrame>> TransportSession::decrypt_packet(\n std::span<const std::uint8_t> ciphertext) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Minimum packet size: nonce (8 bytes for sequence) + tag (16 bytes) + header (1 byte minimum)\n constexpr std::size_t kMinPacketSize = 8 + 16 + 1;\n if (ciphertext.size() < kMinPacketSize) {\n LOG_DEBUG(\"Packet too small: {} bytes\", ciphertext.size());\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Extract obfuscated sequence from first 8 bytes.\n std::uint64_t obfuscated_sequence = 0;\n for (int i = 0; i < 8; ++i) {\n obfuscated_sequence = (obfuscated_sequence << 8) | ciphertext[static_cast<std::size_t>(i)];\n }\n\n // DPI RESISTANCE (Issue #21): Deobfuscate sequence number.\n // The sender obfuscated the sequence to prevent traffic analysis. We reverse the\n // obfuscation here to recover the real sequence for nonce derivation and replay checking.\n const std::uint64_t sequence = crypto::deobfuscate_sequence(obfuscated_sequence, recv_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for decryption debugging (Issue #69, #72)\n // Use WARN level temporarily to trace decryption flow in production\n LOG_WARN(\"Decrypt attempt: session_id={}, pkt_size={}, obfuscated_seq={:#018x}, deobfuscated_seq={}\",\n current_session_id_, ciphertext.size(), obfuscated_sequence, sequence);\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_8_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n\n // Replay check.\n if (!replay_window_.mark_and_check(sequence)) {\n LOG_WARN(\"Packet replay detected or out of window: sequence={}, highest={}\",\n sequence, replay_window_.highest());\n ++stats_.packets_dropped_replay;\n return std::nullopt;\n }\n LOG_WARN(\"Replay check passed, proceeding to decryption\");\n\n // Derive nonce from sequence.\n const auto nonce = crypto::derive_nonce(keys_.recv_nonce, sequence);\n\n // Decrypt (skip sequence prefix).\n auto ciphertext_body = ciphertext.subspan(8);\n auto decrypted = crypto::aead_decrypt(keys_.recv_key, nonce, {}, ciphertext_body);\n if (!decrypted) {\n // Enhanced error logging for decryption failures (Issue #69, #72)\n // Use WARN level so this always appears, not just in verbose mode\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch issues\n LOG_WARN(\"Decryption FAILED: session_id={}, sequence={}, ciphertext_size={}, \"\n \"recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, sequence, ciphertext_body.size(),\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n // Also log the obfuscation key fingerprint and packet header\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_pkt_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Enhanced diagnostic logging for decryption success (Issue #72)\n LOG_WARN(\"Decryption SUCCESS: session_id={}, sequence={}, decrypted_size={}\",\n current_session_id_, sequence, decrypted->size());\n\n ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n auto to_retransmit = retransmit_buffer_.get_packets_to_retransmit();\n\n for (const auto* pkt : to_retransmit) {\n if (retransmit_buffer_.mark_retransmitted(pkt->sequence)) {\n result.push_back(pkt->data);\n ++stats_.retransmits;\n } else {\n // Exceeded max retries, drop packet.\n retransmit_buffer_.drop_packet(pkt->sequence);\n }\n }\n\n return result;\n}\n\nvoid TransportSession::process_ack(const mux::AckFrame& ack) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Debug logging for ACK processing (Issue #72)\n LOG_WARN(\"process_ack called: stream_id={}, ack={}, bitmap={:#010x}, pending_before={}\",\n ack.stream_id, ack.ack, ack.bitmap, retransmit_buffer_.pending_count());\n\n // Cumulative ACK.\n retransmit_buffer_.acknowledge_cumulative(ack.ack);\n\n // Selective ACK from bitmap.\n for (std::uint32_t i = 0; i < 32; ++i) {\n if (((ack.bitmap >> i) & 1U) != 0U) {\n std::uint64_t seq = ack.ack - 1 - i;\n if (seq > 0) {\n retransmit_buffer_.acknowledge(seq);\n }\n }\n }\n\n // Debug logging for ACK processing result (Issue #72)\n LOG_WARN(\"process_ack done: pending_after={}\", retransmit_buffer_.pending_count());\n}\n\nmux::AckFrame TransportSession::generate_ack(std::uint64_t stream_id) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n return mux::AckFrame{\n .stream_id = stream_id,\n .ack = recv_ack_bitmap_.head(),\n .bitmap = recv_ack_bitmap_.bitmap(),\n };\n}\n\nbool TransportSession::should_rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n return session_rotator_.should_rotate(packets_since_rotation_, now_fn_());\n}\n\nvoid TransportSession::rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // SECURITY: Capture sequence number before rotation for verification\n [[maybe_unused]] const auto sequence_before_rotation = send_sequence_;\n\n current_session_id_ = session_rotator_.rotate(now_fn_());\n packets_since_rotation_ = 0;\n ++stats_.session_rotations;\n\n // ===========================================================================\n // SECURITY-CRITICAL: NONCE COUNTER LIFECYCLE\n // ===========================================================================\n // The nonce for ChaCha20-Poly1305 is derived as:\n // nonce = derive_nonce(base_nonce, send_sequence_)\n //\n // Where derive_nonce XORs the counter into the last 8 bytes of base_nonce.\n //\n // CRITICAL INVARIANT: send_sequence_ MUST NEVER be reset.\n //\n // Why this matters:\n // - ChaCha20-Poly1305 security completely breaks if the same (key, nonce) pair\n // is ever used twice\n // - The encryption key (keys_.send_key) is derived once during handshake and\n // does NOT change during session rotation\n // - Session rotation only changes the session_id for protocol-level management\n //\n // Nonce uniqueness guarantee:\n // - send_sequence_ is uint64_t, allowing 2^64 unique nonces\n // - At 10 Gbps with 1KB packets, exhaustion would take ~58 million years\n // - send_sequence_ is incremented after each packet in build_encrypted_packet()\n // - It is NEVER reset or decremented\n //\n // This design was chosen over alternatives like:\n // - Rotating keys on session rotation: Would require re-handshake or key derivation\n // - Resetting counter with new base_nonce: Adds complexity, risk of implementation bugs\n // - Using random nonces: Requires tracking to prevent collisions (birthday bound)\n //\n // See also: Issue #3 - Verify nonce counter lifecycle on session rotation\n // ===========================================================================\n\n // ASSERTION: Verify send_sequence_ was not reset (defense in depth)\n assert(send_sequence_ == sequence_before_rotation &&\n \"SECURITY VIOLATION: send_sequence_ must never be reset during rotation\");\n\n LOG_DEBUG(\"Session rotated to session_id={}, send_sequence_={} (unchanged)\",\n current_session_id_, send_sequence_);\n}\n\nstd::vector<std::uint8_t> TransportSession::build_encrypted_packet(const mux::MuxFrame& frame) {\n // SECURITY: Check for sequence number overflow (extremely unlikely but provides defense in depth)\n // At 10 Gbps with 1KB packets, reaching this threshold would take millions of years,\n // but we check anyway to catch any implementation bugs that might cause unexpected growth.\n if (send_sequence_ >= kNonceOverflowWarningThreshold) {\n LOG_ERROR(\"SECURITY WARNING: send_sequence_ approaching overflow (current={}). \"\n \"Session should be re-established to prevent nonce reuse.\",\n send_sequence_);\n // Note: We log but continue - in practice this is unreachable under normal operation.\n // A production system might want to force session termination here.\n }\n\n // Serialize the frame.\n auto plaintext = mux::MuxCodec::encode(frame);\n\n // Derive nonce from current send sequence.\n // SECURITY: Each packet gets a unique nonce = base_nonce XOR send_sequence_\n // Since send_sequence_ is never reset and always increments, nonces are guaranteed unique.\n const auto nonce = crypto::derive_nonce(keys_.send_nonce, send_sequence_);\n\n // Encrypt using ChaCha20-Poly1305 AEAD.\n auto ciphertext = crypto::aead_encrypt(keys_.send_key, nonce, {}, plaintext);\n\n // DPI RESISTANCE (Issue #21): Obfuscate sequence number before transmission.\n // Previously, the sequence was sent in plaintext, creating a DPI signature (monotonically\n // increasing values). Now we obfuscate it using ChaCha20 with a session-specific key.\n // The receiver can deobfuscate using the same key to recover the sequence for nonce derivation.\n const std::uint64_t obfuscated_sequence = crypto::obfuscate_sequence(send_sequence_, send_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for encryption (Issue #69)\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch between client and server\n LOG_DEBUG(\"Encrypt: session_id={}, sequence={}, obfuscated_seq={:#018x}, plaintext_size={}, \"\n \"send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, send_sequence_, obfuscated_sequence, plaintext.size(),\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_DEBUG(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3]);\n\n // Prepend obfuscated sequence number (8 bytes big-endian).\n std::vector<std::uint8_t> packet;\n packet.reserve(8 + ciphertext.size());\n for (int i = 7; i >= 0; --i) {\n packet.push_back(static_cast<std::uint8_t>((obfuscated_sequence >> (8 * i)) & 0xFF));\n }\n packet.insert(packet.e | |
| [2026-01-28T20:05:05.149Z] [INFO] nd(), ciphertext.begin(), ciphertext.end());\n\n // SECURITY: Increment AFTER using the sequence number.\n // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n ++send_sequence_;\n\n return packet;\n}\n\nstd::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n\n // Fragment the data.\n const std::uint64_t msg_id = message_id_counter_++;\n std::size_t offset = 0;\n std::uint64_t frag_seq = 0;\n\n while (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin;\n\n std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n\n // For fragmented messages, we use a special encoding in the sequence field.\n // High 32 bits: message ID, Low 32 bits: fragment index.\n const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n\n frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n\n offset += chunk_size;\n ++frag_seq;\n }\n\n return frames;\n}\n\n} // namespace veil::transport\n","numLines":417,"startLine":1,"totalLines":417}}} | |
| [2026-01-28T20:05:10.029Z] [INFO] { | |
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| [2026-01-28T20:05:15.476Z] [INFO] {"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017dj6brd4zFMuZug9ttGj9M","type":"tool_result","content":" 1→#include <arpa/inet.h>\n 2→\n 3→#include <array>\n 4→#include <cstdlib>\n 5→#include <fstream>\n 6→#include <iostream>\n 7→#include <chrono>\n 8→#include <iomanip>\n 9→\n 10→#include \"common/cli/cli_utils.h\"\n 11→#include \"common/crypto/crypto_engine.h\"\n 12→#include \"common/daemon/daemon.h\"\n 13→#include \"common/handshake/handshake_processor.h\"\n 14→#include \"common/logging/logger.h\"\n 15→#include \"common/signal/signal_handler.h\"\n 16→#include \"common/utils/rate_limiter.h\"\n 17→#include \"server/server_config.h\"\n 18→#include \"server/session_table.h\"\n 19→#include \"transport/mux/frame.h\"\n 20→#include \"transport/mux/mux_codec.h\"\n 21→#include \"transport/session/transport_session.h\"\n 22→#include \"transport/udp_socket/udp_socket.h\"\n 23→#include \"tun/routing.h\"\n 24→#include \"tun/tun_device.h\"\n 25→\n 26→using namespace veil;\n 27→\n 28→namespace {\n 29→constexpr std::size_t kMaxPacketSize = 65535;\n 30→\n 31→// Minimum expected packet size for both data and handshake packets.\n 32→// This is the absolute minimum to filter out obviously malformed packets\n 33→// before any cryptographic processing. Actual validation happens in the\n 34→// handshake processor and transport session.\n 35→// Value: nonce (12 bytes) + min ciphertext (1 byte) + AEAD tag (16 bytes) = 29 bytes\n 36→constexpr std::size_t kMinPacketSize = 29;\n 37→\n 38→// Statistics for display\n 39→struct ServerStats {\n 40→ std::atomic<uint64_t> total_bytes_sent{0};\n 41→ std::atomic<uint64_t> total_bytes_received{0};\n 42→ std::atomic<uint64_t> total_packets_sent{0};\n 43→ std::atomic<uint64_t> total_packets_received{0};\n 44→ std::atomic<uint64_t> connections_total{0};\n 45→ std::atomic<uint64_t> connections_active{0};\n 46→ std::chrono::steady_clock::time_point start_time;\n 47→};\n 48→\n 49→ServerStats g_stats;\n 50→\n 51→bool load_key_from_file(const std::string& path, std::array<std::uint8_t, 32>& key,\n 52→ std::error_code& ec) {\n 53→ std::ifstream file(path, std::ios::binary);\n 54→ if (!file) {\n 55→ ec = std::error_code(errno, std::generic_category());\n 56→ return false;\n 57→ }\n 58→ file.read(reinterpret_cast<char*>(key.data()), static_cast<std::streamsize>(key.size()));\n 59→ if (file.gcount() != static_cast<std::streamsize>(key.size())) {\n 60→ ec = std::make_error_code(std::errc::io_error);\n 61→ return false;\n 62→ }\n 63→ return true;\n 64→}\n 65→\n 66→// Helper to provide actionable error message for key file issues.\n 67→std::string format_key_error(const std::string& key_type, const std::string& path,\n 68→ const std::error_code& ec) {\n 69→ std::string msg = key_type + \" file '\" + path + \"' error: \" + ec.message();\n 70→ if (ec == std::errc::no_such_file_or_directory) {\n 71→ msg += \"\\n To generate a new key, run:\\n\";\n 72→ msg += \" head -c 32 /dev/urandom > \" + path + \"\\n\";\n 73→ msg += \" Then copy this file securely to both server and client.\";\n 74→ } else if (ec == std::errc::permission_denied) {\n 75→ msg += \"\\n Check file permissions with: ls -la \" + path + \"\\n\";\n 76→ msg += \" Ensure the file is readable by the current user.\";\n 77→ } else if (ec == std::errc::io_error) {\n 78→ msg += \"\\n The key file must be exactly 32 bytes.\\n\";\n 79→ msg += \" Regenerate with: head -c 32 /dev/urandom > \" + path;\n 80→ }\n 81→ return msg;\n 82→}\n 83→\n 84→// Helper functions for logging\n 85→void log_signal_sigint() {\n 86→ LOG_INFO(\"Received SIGINT, shutting down...\");\n 87→ std::cout << '\\n';\n 88→ cli::print_warning(\"Received interrupt signal, initiating graceful shutdown...\");\n 89→}\n 90→\n 91→void log_signal_sigterm() {\n 92→ LOG_INFO(\"Received SIGTERM, shutting down...\");\n 93→ std::cout << '\\n';\n 94→ cli::print_warning(\"Received termination signal, initiating graceful shutdown...\");\n 95→}\n 96→\n 97→void log_tun_write_error(const std::error_code& ec) {\n 98→ LOG_ERROR(\"Failed to write to TUN: {}\", ec.message());\n 99→}\n 100→\n 101→void log_handshake_send_error(const std::error_code& ec) {\n 102→ LOG_ERROR(\"Failed to send handshake response: {}\", ec.message());\n 103→}\n 104→\n 105→void log_retransmit_error(const std::error_code& ec) {\n 106→ LOG_WARN(\"Failed to retransmit to client: {}\", ec.message());\n 107→}\n 108→\n 109→void log_decryption_failure(std::uint64_t session_id, const std::string& host,\n 110→ std::uint16_t port, std::size_t size) {\n 111→ LOG_WARN(\"Failed to decrypt packet from session {} ({}:{}), size={}. \"\n 112→ \"Possible causes: key mismatch, replay attack, or corrupted packet.\",\n 113→ session_id, host, port, size);\n 114→}\n 115→\n 116→// Helper function to log packet processing - avoids clang-tidy bugprone-lambda-function-name\n 117→// warning when LOG_WARN is used inside lambdas (Issue #72 debugging)\n 118→void log_processing_packet(std::uint64_t session_id, const std::string& host,\n 119→ std::uint16_t port, std::size_t size) {\n 120→ LOG_WARN(\"Processing packet from session {} ({}:{}), size={}\",\n 121→ session_id, host, port, size);\n 122→}\n 123→\n 124→// Additional helper functions for Issue #72 debugging - avoid bugprone-lambda-function-name\n 125→void log_decrypted_frames(std::size_t frame_count, std::uint64_t session_id) {\n 126→ LOG_WARN(\"Decrypted {} frame(s) from session {}\", frame_count, session_id);\n 127→}\n 128→\n 129→void log_frame_info(int kind, bool is_data) {\n 130→ LOG_WARN(\" Frame kind={}, is_data={}\", kind, is_data);\n 131→}\n 132→\n 133→void log_tun_write_attempt(std::size_t bytes, std::uint64_t session_id) {\n 134→ LOG_WARN(\"Writing {} bytes to TUN from session {}\", bytes, session_id);\n 135→}\n 136→\n 137→void log_tun_write_success(std::size_t bytes) {\n 138→ LOG_WARN(\"TUN write SUCCESS: {} bytes\", bytes);\n 139→}\n 140→\n 141→void log_ack_processing() {\n 142→ LOG_WARN(\"Processing ACK frame\");\n 143→}\n 144→\n 145→// Helper functions for ACK sending logging (Issue #72 fix)\n 146→// These avoid the bugprone-lambda-function-name clang-tidy warning\n 147→void log_ack_send_error(const std::error_code& ec) {\n 148→ LOG_WARN(\"Failed to send ACK to client: {}\", ec.message());\n 149→}\n 150→\n 151→void log_ack_sent([[maybe_unused]] std::uint64_t ack, [[maybe_unused]] std::uint32_t bitmap) {\n 152→ LOG_DEBUG(\"Sent ACK to client: ack={}, bitmap={:#010x}\", ack, bitmap);\n 153→}\n 154→\n 155→void log_new_client(const std::string& host, std::uint16_t port, std::uint64_t session_id) {\n 156→ LOG_INFO(\"New client connected from {}:{}, session {}\", host, port, session_id);\n 157→\n 158→ g_stats.connections_total++;\n 159→ g_stats.connections_active++;\n 160→\n 161→ auto& state = cli::cli_state();\n 162→ if (state.use_color) {\n 163→ std::cout << cli::colors::kBrightGreen << cli::symbols::kCircle << cli::colors::kReset\n 164→ << \" Client connected: \" << cli::colors::kBrightCyan << host << \":\" << port\n 165→ << cli::colors::kReset << \" (session \" << cli::colors::kDim << session_id\n 166→ << cli::colors::kReset << \")\" << '\\n';\n 167→ } else {\n 168→ std::cout << \"[+] Client connected: \" << host << \":\" << port << \" (session \" << session_id\n 169→ << \")\" << '\\n';\n 170→ }\n 171→}\n 172→\n 173→[[maybe_unused]]\n 174→void log_client_disconnected(const std::string& host, std::uint16_t port,\n 175→ std::uint64_t session_id) {\n 176→ LOG_INFO(\"Client disconnected: {}:{}, session {}\", host, port, session_id);\n 177→\n 178→ if (g_stats.connections_active > 0) {\n 179→ g_stats.connections_active--;\n 180→ }\n 181→\n 182→ auto& state = cli::cli_state();\n 183→ if (state.use_color) {\n 184→ std::cout << cli::colors::kBrightRed << cli::symbols::kCircleEmpty << cli::colors::kReset\n 185→ << \" Client disconnected: \" << cli::colors::kDim << host << \":\" << port\n 186→ << cli::colors::kReset << \" (session \" << cli::colors::kDim << session_id\n 187→ << cli::colors::kReset << \")\" << '\\n';\n 188→ } else {\n 189→ std::cout << \"[-] Client disconnected: \" << host << \":\" << port << \" (session \" << session_id\n 190→ << \")\" << '\\n';\n 191→ }\n 192→}\n 193→\n 194→void log_packet_received([[maybe_unused]] std::size_t size,\n 195→ [[maybe_unused]] const std::string& host,\n 196→ [[maybe_unused]] std::uint16_t port) {\n 197→ LOG_DEBUG(\"Received {} bytes from {}:{}\", size, host, port);\n 198→ g_stats.total_packets_received++;\n 199→ g_stats.total_bytes_received += size;\n 200→}\n 201→\n 202→void print_configuration(const server::ServerConfig& config) {\n 203→ cli::print_section(\"Server Configuration\");\n 204→ cli::print_row(\"Listen Address\", config.listen_address + \":\" + std::to_string(config.listen_port));\n 205→ cli::print_row(\"Max Clients\", std::to_string(config.max_clients));\n 206→ cli::print_row(\"Session Timeout\", std::to_string(config.session_timeout.count()) + \"s\");\n 207→ cli::print_row(\"TUN Device\", config.tunnel.tun.device_name);\n 208→ cli::print_row(\"TUN IP\", config.tunnel.tun.ip_address);\n 209→ cli::print_row(\"IP Pool\", config.ip_pool_start + \" - \" + config.ip_pool_end);\n 210→ cli::print_row(\"NAT Enabled\", config.nat.enable_forwarding ? \"Yes\" : \"No\");\n 211→ if (config.nat.enable_forwarding) {\n 212→ cli::print_row(\"External Interface\", config.nat.external_interface);\n 213→ }\n 214→ cli::print_row(\"Verbose\", config.verbose ? \"Yes\" : \"No\");\n 215→ cli::print_row(\"Daemon Mode\", config.daemon_mode ? \"Yes\" : \"No\");\n 216→ std::cout << '\\n';\n 217→}\n 218→\n 219→void print_server_status(std::size_t max_clients) {\n 220→ auto now = std::chrono::steady_clock::now();\n 221→ auto uptime_seconds = std::chrono::duration_cast<std::chrono::seconds>(now - g_stats.start_time).count();\n 222→\n 223→ cli::print_section(\"Server Status\");\n 224→ cli::print_row_colored(\"Status\", \"Running\", cli::colors::kBrightGreen);\n 225→ cli::print_row(\"Uptime\", cli::format_duration(uptime_seconds));\n 226→ cli::print_row(\"Active Clients\", std::to_string(g_stats.connections_active.load()) + \"/\" +\n 227→ std::to_string(max_clients));\n 228→ cli::print_row(\"Total Connections\", std::to_string(g_stats.connections_total.load()));\n 229→ cli::print_row(\"Bytes Sent\", cli::format_bytes(g_stats.total_bytes_sent.load()));\n 230→ cli::print_row(\"Bytes Received\", cli::format_bytes(g_stats.total_bytes_received.load()));\n 231→ cli::print_row(\"Packets Sent\", std::to_string(g_stats.total_packets_sent.load()));\n 232→ cli::print_row(\"Packets Received\", std::to_string(g_stats.total_packets_received.load()));\n 233→ std::cout << '\\n';\n 234→}\n 235→\n 236→} // namespace\n 237→\n 238→int main(int argc, char* argv[]) {\n 239→ // Parse configuration\n 240→ server::ServerConfig config;\n 241→ std::error_code ec;\n 242→\n 243→ if (!server::parse_args(argc, argv, config, ec)) {\n 244→ cli::print_error(\"Failed to parse arguments: \" + ec.message());\n 245→ std::cerr << '\\n';\n 246→ std::cerr << \"Usage: veil-server [-p <port>] [options]\" << '\\n';\n 247→ std::cerr << '\\n';\n 248→ std::cerr << \"Options:\" << '\\n';\n 249→ std::cerr << \" -p, --port <port> Listen port (default: 4433)\" << '\\n';\n 250→ std::cerr << \" -l, --listen <addr> Listen address (default: 0.0.0.0)\" << '\\n';\n 251→ std::cerr << \" -c, --config <file> Configuration file path\" << '\\n';\n 252→ std::cerr << \" -k, --key <file> Pre-shared key file\" << '\\n';\n 253→ std::cerr << \" -m, --max-clients <n> Maximum clients (default: 256)\" << '\\n';\n 254→ std::cerr << \" -d, --daemon Run as daemon\" << '\\n';\n 255→ std::cerr << \" -v, --verbose Enable verbose logging\" << '\\n';\n 256→ std::cerr << \" --tun-name <name> TUN device name (default: veil0)\" << '\\n';\n 257→ std::cerr << \" --tun-ip <ip> TUN device IP (default: 10.8.0.1)\" << '\\n';\n 258→ std::cerr << \" --nat Enable NAT forwarding\" << '\\n';\n 259→ std::cerr << \" --nat-interface <iface> External NAT interface\" << '\\n';\n 260→ std::cerr << '\\n';\n 261→ return EXIT_FAILURE;\n 262→ }\n 263→\n 264→ // Finalize configuration (auto-detect interfaces, etc.)\n 265→ if (!server::finalize_config(config, ec)) {\n 266→ cli::print_error(\"Configuration finalization failed: \" + ec.message());\n 267→ return EXIT_FAILURE;\n 268→ }\n 269→\n 270→ // Validate configuration\n 271→ std::string validation_error;\n 272→ if (!server::validate_config(config, validation_error)) {\n 273→ cli::print_error(\"Configuration error: \" + validation_error);\n 274→ return EXIT_FAILURE;\n 275→ }\n 276→\n 277→ // Print banner (only if not daemon mode)\n 278→ if (!config.daemon_mode) {\n 279→ cli::print_banner(\"VEIL VPN Server\", \"1.0.0\");\n 280→ print_configuration(config);\n 281→ }\n 282→\n 283→ // Initialize logging\n 284→ logging::configure_logging(config.verbose ? logging::LogLevel::debug : logging::LogLevel::info,\n 285→ true);\n 286→ LOG_INFO(\"VEIL Server starting...\");\n 287→\n 288→ // Check if already running\n 289→ if (!config.pid_file.empty() && daemon::is_already_running(config.pid_file, ec)) {\n 290→ cli::print_error(\"Another instance is already running (PID file: \" + config.pid_file + \")\");\n 291→ return EXIT_FAILURE;\n 292→ }\n 293→\n 294→ // Daemonize if requested\n 295→ if (config.daemon_mode) {\n 296→ daemon::DaemonConfig daemon_config;\n 297→ daemon_config.pid_file = config.pid_file;\n 298→ daemon_config.user = config.user;\n 299→ daemon_config.group = config.group;\n 300→\n 301→ cli::print_info(\"Daemonizing...\");\n 302→ LOG_INFO(\"Daemonizing...\");\n 303→ if (!daemon::daemonize(daemon_config, ec)) {\n 304→ cli::print_error(\"Failed to daemonize: \" + ec.message());\n 305→ LOG_ERROR(\"Failed to daemonize: {}\", ec.message());\n 306→ return EXIT_FAILURE;\n 307→ }\n 308→ }\n 309→\n 310→ // Create PID file if not daemonizing\n 311→ std::unique_ptr<daemon::PidFile> pid_file;\n 312→ if (!config.daemon_mode && !config.pid_file.empty()) {\n 313→ pid_file = std::make_unique<daemon::PidFile>(config.pid_file);\n 314→ if (!pid_file->create(ec)) {\n 315→ cli::print_warning(\"Failed to create PID file: \" + ec.message());\n 316→ LOG_WARN(\"Failed to create PID file: {}\", ec.message());\n 317→ }\n 318→ }\n 319→\n 320→ // Load keys\n 321→ [[maybe_unused]] crypto::KeyPair key_pair = crypto::generate_x25519_keypair();\n 322→ std::vector<std::uint8_t> psk;\n 323→ if (!config.tunnel.key_file.empty()) {\n 324→ std::array<std::uint8_t, 32> psk_arr{};\n 325→ if (load_key_from_file(config.tunnel.key_file, psk_arr, ec)) {\n 326→ psk.assign(psk_arr.begin(), psk_arr.end());\n 327→ cli::print_success(\"Pre-shared key loaded\");\n 328→ } else {\n 329→ std::string error_msg = format_key_error(\"Pre-shared key\", config.tunnel.key_file, ec);\n 330→ cli::print_error(error_msg);\n 331→ LOG_ERROR(\"{}\", error_msg);\n 332→ return EXIT_FAILURE;\n 333→ }\n 334→ } else {\n 335→ // PSK is required for server operation\n 336→ cli::print_error(\"Pre-shared key file is required but not specified\");\n 337→ std::cerr << '\\n';\n 338→ std::cerr << \"The server requires a pre-shared key (PSK) for secure client authentication.\" << '\\n';\n 339→ std::cerr << '\\n';\n 340→ std::cerr << \"To generate a new 32-byte PSK file:\" << '\\n';\n 341→ std::cerr << \" head -c 32 /dev/urandom > /etc/veil/server.key\" << '\\n';\n 342→ std::cerr << '\\n';\n 343→ std::cerr << \"Then start the server with:\" << '\\n';\n 344→ std::cerr << \" veil-server -k /etc/veil/server.key\" << '\\n';\n 345→ std::cerr << '\\n';\n 346→ std::cerr << \"Or specify it in your config file:\" << '\\n';\n 347→ std::cerr << \" [crypto]\" << '\\n';\n 348→ std::cerr << \" preshared_key_file = /etc/veil/server.key\" << '\\n';\n 349→ std::cerr << '\\n';\n 350→ std::cerr << \"Remember to copy this key securely to all clients!\" << '\\n';\n 351→ LOG_ERROR(\"Pre-shared key file not specified. Use -k/--key option or config file.\");\n 352→ return EXIT_FAILURE;\n 353→ }\n 354→\n 355→ // Open TUN device\n 356→ cli::print_info(\"Opening TUN device...\");\n 357→ tun::TunDevice tun_device;\n 358→ if (!tun_device.open(config.tunnel.tun, ec)) {\n 359→ cli::print_error(\"Failed to open TUN device: \" + ec.message());\n 360→ LOG_ERROR(\"Failed to open TUN device: {}\", ec.message());\n 361→ return EXIT_FAILURE;\n 362→ }\n 363→ cli::print_success(\"TUN device \" + tun_device.device_name() + \" opened with IP \" +\n 364→ config.tunnel.tun.ip_address);\n 365→ LOG_INFO(\"TUN device {} opened with IP {}\", tun_device.device_name(),\n 366→ config.tunnel.tun.ip_address);\n 367→\n 368→ // Setup routing and NAT\n 369→ tun::RouteManager route_manager;\n 370→\n 371→ if (config.nat.enable_forwarding) {\n 372→ cli::print_info(\"Configuring NAT...\");\n 373→ config.nat.internal_interface = tun_device.device_name();\n 374→ if (!route_manager.configure_nat(config.nat, ec)) {\n 375→ cli::print_error(\"Failed to configure NAT: \" + ec.message());\n 376→ LOG_ERROR(\"Failed to configure NAT: {}\", ec.message());\n 377→ return EXIT_FAILURE;\n 378→ }\n 379→ cli::print_success(\"NAT configured: \" + config.nat.internal_interface + \" -> \" +\n 380→ config.nat.external_interface);\n 381→ LOG_INFO(\"NAT configured: {} -> {}\", config.nat.internal_interface,\n 382→ config.nat.external_interface);\n 383→ }\n 384→\n 385→ // Open UDP socket\n 386→ cli::print_info(\"Opening UDP socket...\");\n 387→ transport::UdpSocket udp_socket;\n 388→ if (!udp_socket.open(config.listen_port, true, ec)) {\n 389→ cli::print_error(\"Failed to open UDP socket: \" + ec.message());\n 390→ LOG_ERROR(\"Failed to open UDP socket: {}\", ec.message());\n 391→ return EXIT_FAILURE;\n 392→ }\n 393→ cli::print_success(\"Listening on \" + config.listen_address + \":\" +\n 394→ std::to_string(config.listen_port));\n 395→ LOG_INFO(\"Listening on {}:{}\", config.listen_address, config.listen_port);\n 396→\n 397→ // Create session table\n 398→ server::SessionTable session_table(config.max_clients, config.session_timeout,\n 399→ config.ip_pool_start, config.ip_pool_end);\n 400→\n 401→ // Create handshake responder\n 402→ utils::TokenBucket rate_limiter(100.0, std::chrono::milliseconds(10)); // 100 tokens, 10ms refill\n 403→ handshake::HandshakeResponder responder(psk, config.tunnel.handshake_skew_tolerance, rate_limiter);\n 404→\n 405→ // Setup signal handlers\n 406→ auto& sig_handler = signal::SignalHandler::instance();\n 407→ sig_handler.setup_defaults();\n 408→\n 409→ std::atomic<bool> running{true};\n 410→ sig_handler.on(signal::Signal::kInterrupt, [&running](signal::Signal) {\n 411→ log_signal_sigint();\n 412→ running.store(false);\n 413→ });\n 414→ sig_handler.on(signal::Signal::kTerminate, [&running](signal::Signal) {\n 415→ log_signal_sigterm();\n 416→ running.store(false);\n 417→ });\n 418→\n 419→ // Session cleanup timer\n 420→ auto last_cleanup = std::chrono::steady_clock::now();\n 421→ auto last_stats = std::chrono::steady_clock::now();\n 422→\n 423→ // Record start time\n 424→ g_stats.start_time = std::chrono::steady_clock::now();\n 425→\n 426→ // Print running status\n 427→ std::cout << '\\n';\n 428→ cli::print_section(\"Server Running\");\n 429→\n 430→ auto& cli_st = cli::cli_state();\n 431→ if (cli_st.use_color) {\n 432→ std::cout << cli::colors::kBrightGreen << cli::symbols::kCircle << cli::colors::kReset\n 433→ << \" Server is ready and accepting connections\" << '\\n';\n 434→ std::cout << cli::colors::kDim << \" Press Ctrl+C to stop\" << cli::colors::kReset << '\\n';\n 435→ } else {\n 436→ std::cout << \"[*] Server is ready and accepting connections\" << '\\n';\n 437→ std::cout << \" Press Ctrl+C to stop\" << '\\n';\n 438→ }\n 439→ std::cout << '\\n';\n 440→\n 441→ LOG_INFO(\"Server running, accepting connections...\");\n 442→\n 443→ // Main server loop\n 444→ std::array<std::uint8_t, kMaxPacketSize> buffer{};\n 445→\n 446→ while (running.load() && !sig_handler.should_terminate()) {\n 447→ // Poll UDP socket\n 448→ udp_socket.poll(\n 449→ [&](const transport::UdpPacket& pkt) {\n 450→ // Early rejection of obviously malformed packets (DoS prevention).\n 451→ // This filters out undersized packets before any crypto processing.\n 452→ if (pkt.data.size() < kMinPacketSize || pkt.data.size() > kMaxPacketSize) {\n 453→ LOG_DEBUG(\"Dropping packet with invalid size {} from {}:{}\",\n 454→ pkt.data.size(), pkt.remote.host, pkt.remote.port);\n 455→ return;\n 456→ }\n 457→\n 458→ log_packet_received(pkt.data.size(), pkt.remote.host, pkt.remote.port);\n 459→\n 460→ // Check if this is from an existing session\n 461→ auto* session = session_table.find_by_endpoint(pkt.remote);\n 462→\n 463→ if (session != nullptr) {\n 464→ // Process data from existing session\n 465→ session_table.update_activity(session->session_id);\n 466→ session->packets_received++;\n 467→ session->bytes_received += pkt.data.size();\n 468→\n 469→ if (session->transport) {\n 470→ // Use WARN level temporarily for Issue #72 debugging\n 471→ log_processing_packet(session->session_id, pkt.remote.host,\n 472→ pkt.remote.port, pkt.data.size());\n 473→ auto frames = session->transport->decrypt_packet(pkt.data);\n 474→ if (frames) {\n 475→ // Use helper functions for Issue #72 debugging (avoid bugprone-lambda-function-name)\n 476→ log_decrypted_frames(frames->size(), session->session_id);\n 477→ for (const auto& frame : *frames) {\n 478→ log_frame_info(static_cast<int>(frame.kind),\n 479→ frame.kind == mux::FrameKind::kData);\n 480→ if (frame.kind == mux::FrameKind::kData) {\n 481→ // Issue #74 fix: Extract source IP from the IP packet header and update\n 482→ // session's tunnel_ip. This is necessary because the client may use its\n 483→ // own configured tunnel IP (e.g., 10.8.0.2) instead of the server-assigned\n 484→ // IP (e.g., 10.8.0.254). Without this fix, return packets from the internet\n 485→ // cannot be routed back to the correct client because the destination IP\n 486→ // in return packets matches the client's source IP, not the server-assigned IP.\n 487→ const auto& payload = frame.data.payload;\n 488→ // Check for valid IPv4 packet: minimum 20 bytes header AND IPv4 version (first nibble == 4)\n 489→ if (payload.size() >= 20 && ((payload[0] >> 4) == 4)) {\n 490→ // Extract source IP from IPv4 header (bytes 12-15)\n 491→ std::uint32_t src_ip = (static_cast<std::uint32_t>(payload[12]) << 24) |\n 492→ (static_cast<std::uint32_t>(payload[13]) << 16) |\n 493→ (static_cast<std::uint32_t>(payload[14]) << 8) |\n 494→ static_cast<std::uint32_t>(payload[15]);\n 495→ // Only update if source IP is non-zero (valid)\n 496→ if (src_ip != 0) {\n 497→ struct in_addr src_addr {};\n 498→ src_addr.s_addr = htonl(src_ip);\n 499→ char src_ip_str[INET_ADDRSTRLEN];\n 500→ inet_ntop(AF_INET, &src_addr, src_ip_str, sizeof(src_ip_str));\n 501→\n 502→ // Update session's tunnel IP if it differs from the packet's source IP\n 503→ // This ensures return packets can be routed back to this client\n 504→ session_table.update_tunnel_ip(session->session_id, src_ip_str);\n 505→ }\n 506→ }\n 507→\n 508→ // Write to TUN device\n 509→ log_tun_write_attempt(frame.data.payload.size(), session->session_id);\n 510→ if (!tun_device.write(frame.data.payload, ec)) {\n 511→ log_tun_write_error(ec);\n 512→ } else {\n 513→ log_tun_write_success(frame.data.payload.size());\n 514→ }\n 515→\n 516→ // Send ACK back to client (Issue #72 fix)\n 517→ // Without ACKs, the client keeps retransmitting packets\n 518→ // IMPORTANT: Use encrypt_frame() instead of encrypt_data() to preserve the ACK frame kind.\n 519→ // encrypt_data() wraps data in a DATA frame, which would cause the receiver to\n 520→ // incorrectly interpret the ACK as data and try to write it to TUN.\n 521→ auto ack_info = session->transport->generate_ack(frame.data.stream_id);\n 522→ auto ack_frame = mux::make_ack_frame(ack_info.stream_id, ack_info.ack, ack_info.bitmap);\n 523→ auto ack_packet = session->transport->encrypt_frame(ack_frame);\n 524→ if (!udp_socket.send(ack_packet, pkt.remote, ec)) {\n 525→ log_ack_send_error(ec);\n 526→ } else {\n 527→ log_ack_sent(ack_info.ack, ack_info.bitmap);\n 528→ }\n 529→ } else if (frame.kind == mux::FrameKind::kAck) {\n 530→ log_ack_processing();\n 531→ session->transport->process_ack(frame.ack);\n 532→ }\n 533→ }\n 534→ } else {\n 535→ // Log decryption failure for diagnostics\n 536→ log_decryption_failure(session->session_id, pkt.remote.host,\n 537→ pkt.remote.port, pkt.data.size());\n 538→ }\n 539→ }\n 540→ } else {\n 541→ // Log when packet doesn't match any existing session\n 542→ LOG_DEBUG(\"No session found for endpoint {}:{}, treating as potential handshake\",\n 543→ pkt.remote.host, pkt.remote.port);\n 544→ // New connection - handle handshake\n 545→ auto hs_result = responder.handle_init(pkt.data);\n 546→ if (hs_result) {\n 547→ if (!udp_socket.send(hs_result->response, pkt.remote, ec)) {\n 548→ log_handshake_send_error(ec);\n 549→ } else {\n 550→ // Create transport session\n 551→ auto transport = std::make_unique<transport::TransportSession>(\n 552→ hs_result->session, config.tunnel.transport);\n 553→\n 554→ // Create client session\n 555→ auto session_id = session_table.create_session(pkt.remote, std::move(transport));\n 556→ if (session_id) {\n 557→ log_new_client(pkt.remote.host, pkt.remote.port, *session_id);\n 558→ }\n 559→ }\n 560→ }\n 561→ }\n 562→ },\n 563→ 10, ec);\n 564→\n 565→ // Read from TUN and route to appropriate client\n 566→ auto tun_read = tun_device.read_into(buffer, ec);\n 567→ if (tun_read > 0) {\n 568→ // Parse IP header to find destination\n 569→ if (tun_read >= 20) {\n 570→ // Check if this is an IPv4 packet (version nibble == 4)\n 571→ std::uint8_t version = (buffer[0] >> 4);\n 572→ if (version != 4) {\n 573→ LOG_DEBUG(\"TUN read: {} bytes, non-IPv4 packet (version={}), skipping\", tun_read, version);\n 574→ } else {\n 575→ // Extract source IP from IPv4 header (bytes 12-15)\n 576→ std::uint32_t src_ip = (static_cast<std::uint32_t>(buffer[12]) << 24) |\n 577→ (static_cast<std::uint32_t>(buffer[13]) << 16) |\n 578→ (static_cast<std::uint32_t>(buffer[14]) << 8) |\n 579→ static_cast<std::uint32_t>(buffer[15]);\n 580→ // Extract destination IP from IPv4 header (bytes 16-19)\n 581→ std::uint32_t dst_ip = (static_cast<std::uint32_t>(buffer[16]) << 24) |\n 582→ (static_cast<std::uint32_t>(buffer[17]) << 16) |\n 583→ (static_cast<std::uint32_t>(buffer[18]) << 8) |\n 584→ static_cast<std::uint32_t>(buffer[19]);\n 585→\n 586→ // Convert to string\n 587→ char src_ip_str[INET_ADDRSTRLEN];\n 588→ char dst_ip_str[INET_ADDRSTRLEN];\n 589→ struct in_addr src_addr {};\n 590→ struct in_addr dst_addr {};\n 591→ src_addr.s_addr = htonl(src_ip);\n 592→ dst_addr.s_addr = htonl(dst_ip);\n 593→ inet_ntop(AF_INET, &src_addr, src_ip_str, sizeof(src_ip_str));\n 594→ inet_ntop(AF_INET, &dst_addr, dst_ip_str, sizeof(dst_ip_str));\n 595→\n 596→ // Use WARN level temporarily for Issue #74 debugging (return traffic routing)\n 597→ LOG_WARN(\"TUN read: {} bytes, {} -> {}\", tun_read, src_ip_str, dst_ip_str);\n 598→\n 599→ // Find session by tunnel IP\n 600→ auto* session = session_table.find_by_tunnel_ip(dst_ip_str);\n 601→ if (session != nullptr && session->transport) {\n 602→ LOG_WARN(\"Routing {} bytes to session {} ({}:{})\",\n 603→ tun_read, session->session_id, session->endpoint.host, session->endpoint.port);\n 604→ // Encrypt and send\n 605→ auto packets = session->transport->encrypt_data(\n 606→ std::span<const std::uint8_t>(buffer.data(), static_cast<std::size_t>(tun_read)));\n 607→ for (const auto& pkt : packets) {\n 608→ if (!udp_socket.send(pkt, session->endpoint, ec)) {\n 609→ LOG_ERROR(\"Failed to send to client: {}\", ec.message());\n 610→ } else {\n 611→ session->packets_sent++;\n 612→ session->bytes_sent += pkt.size();\n 613→ g_stats.total_packets_sent++;\n 614→ g_stats.total_bytes_sent += pkt.size();\n 615→ }\n 616→ }\n 617→ } else {\n 618→ LOG_WARN(\"No session found for tunnel IP {}, packet dropped\", dst_ip_str);\n 619→ }\n 620→ }\n 621→ }\n 622→ }\n 623→\n 624→ // Periodic session cleanup\n 625→ auto now = std::chrono::steady_clock::now();\n 626→ if (now - last_cleanup >= config.cleanup_interval) {\n 627→ auto expired = session_table.cleanup_expired();\n 628→ if (expired > 0) {\n 629→ if (g_stats.connections_active >= expired) {\n 630→ g_stats.connections_active -= expired;\n 631→ } else {\n 632→ g_stats.connections_active = 0;\n 633→ }\n 634→ cli::print_info(\"Cleaned up \" + std::to_string(expired) + \" expired session(s)\");\n 635→ LOG_INFO(\"Cleaned up {} expired sessions\", expired);\n 636→ }\n 637→ last_cleanup = now;\n 638→ }\n 639→\n 640→ // Periodic stats display (every 60 seconds in verbose mode)\n 641→ if (config.verbose && (now - last_stats >= std::chrono::seconds(60))) {\n 642→ print_server_status(config.max_clients);\n 643→ last_stats = now;\n 644→ }\n 645→\n 646→ // Process retransmits for all sessions (use for_each_session to avoid use-after-free)\n 647→ session_table.for_each_session([&](server::ClientSession* session) {\n 648→ if (session->transport) {\n 649→ auto retransmits = session->transport->get_retransmit_packets();\n 650→ for (const auto& pkt : retransmits) {\n 651→ if (!udp_socket.send(pkt, session->endpoint, ec)) {\n 652→ log_retransmit_error(ec);\n 653→ }\n 654→ }\n 655→ }\n 656→ });\n 657→ }\n 658→\n 659→ // Cleanup\n 660→ std::cout << '\\n';\n 661→ cli::print_section(\"Shutdown\");\n 662→ cli::print_info(\"Cleaning up routes and NAT...\");\n 663→ LOG_INFO(\"Shutting down...\");\n 664→ route_manager.cleanup();\n 665→\n 666→ // Print final stats\n 667→ if (!config.daemon_mode) {\n 668→ print_server_status(config.max_clients);\n 669→ }\n 670→\n 671→ cli::print_success(\"VEIL Server stopped gracefully\");\n 672→ LOG_INFO(\"VEIL Server stopped\");\n 673→ return EXIT_SUCCESS;\n 674→}\n 675→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"6ac110f2-5246-48ec-bb5d-4c5387d4b6ad","uuid":"b458def0-7181-4c80-8d81-7486993e3d51","tool_use_result":{"type":"text","file":{"filePath":"/tmp/gh-issue-solver-1769630568012/src/server/main.cpp","content":"#include <arpa/inet.h>\n\n#include <array>\n#include <cstdlib>\n#include <fstream>\n#include <iostream>\n#include <chrono>\n#include <iomanip>\n\n#include \"common/cli/cli_utils.h\"\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/daemon/daemon.h\"\n#include \"common/handshake/handshake_processor.h\"\n#include \"common/logging/logger.h\"\n#include \"common/signal/signal_handler.h\"\n#include \"common/utils/rate_limiter.h\"\n#include \"server/server_config.h\"\n#include \"server/session_table.h\"\n#include \"transport/mux/frame.h\"\n#include \"transport/mux/mux_codec.h\"\n#include \"transport/session/transport_session.h\"\n#include \"transport/udp_socket/udp_socket.h\"\n#include \"tun/routing.h\"\n#include \"tun/tun_device.h\"\n\nusing namespace veil;\n\nnamespace {\nconstexpr std::size_t kMaxPacketSize = 65535;\n\n// Minimum expected packet size for both data and handshake packets.\n// This is the absolute minimum to filter out obviously malformed packets\n// before any cryptographic processing. Actual validation happens in the\n// handshake processor and transport session.\n// Value: nonce (12 bytes) + min ciphertext (1 byte) + AEAD tag (16 bytes) = 29 bytes\nconstexpr std::size_t kMinPacketSize = 29;\n\n// Statistics for display\nstruct ServerStats {\n std::atomic<uint64_t> total_bytes_sent{0};\n std::atomic<uint64_t> total_bytes_received{0};\n std::atomic<uint64_t> total_packets_sent{0};\n std::atomic<uint64_t> total_packets_received{0};\n std::atomic<uint64_t> connections_total{0};\n std::atomic<uint64_t> connections_active{0};\n std::chrono::steady_clock::time_point start_time;\n};\n\nServerStats g_stats;\n\nbool load_key_from_file(const std::string& path, std::array<std::uint8_t, 32>& key,\n std::error_code& ec) {\n std::ifstream file(path, std::ios::binary);\n if (!file) {\n ec = std::error_code(errno, std::generic_category());\n return false;\n }\n file.read(reinterpret_cast<char*>(key.data()), static_cast<std::streamsize>(key.size()));\n if (file.gcount() != static_cast<std::streamsize>(key.size())) {\n ec = std::make_error_code(std::errc::io_error);\n return false;\n }\n return true;\n}\n\n// Helper to provide actionable error message for key file issues.\nstd::string format_key_error(const std::string& key_type, const std::string& path,\n const std::error_code& ec) {\n std::string msg = key_type + \" file '\" + path + \"' error: \" + ec.message();\n if (ec == std::errc::no_such_file_or_directory) {\n msg += \"\\n To generate a new key, run:\\n\";\n msg += \" head -c 32 /dev/urandom > \" + path + \"\\n\";\n msg += \" Then copy this file securely to both server and client.\";\n } else if (ec == std::errc::permission_denied) {\n msg += \"\\n Check file permissions with: ls -la \" + path + \"\\n\";\n msg += \" Ensure the file is readable by the current user.\";\n } else if (ec == std::errc::io_error) {\n msg += \"\\n The key file must be exactly 32 bytes.\\n\";\n msg += \" Regenerate with: head -c 32 /dev/urandom > \" + path;\n }\n return msg;\n}\n\n// Helper functions for logging\nvoid log_signal_sigint() {\n LOG_INFO(\"Received SIGINT, shutting down...\");\n std::cout << '\\n';\n cli::print_warning(\"Received interrupt signal, initiating graceful shutdown...\");\n}\n\nvoid log_signal_sigterm() {\n LOG_INFO(\"Received SIGTERM, shutting down...\");\n std::cout << '\\n';\n cli::print_warning(\"Received termination signal, initiating graceful shutdown...\");\n}\n\nvoid log_tun_write_error(const std::error_code& ec) {\n LOG_ERROR(\"Failed to write to TUN: {}\", ec.message());\n}\n\nvoid log_handshake_send_error(const std::error_code& ec) {\n LOG_ERROR(\"Failed to send handshake response: {}\", ec.message());\n}\n\nvoid log_retransmit_error(const std::error_code& ec) {\n LOG_WARN(\"Failed to retransmit to client: {}\", ec.message());\n}\n\nvoid log_decryption_failure(std::uint64_t session_id, const std::string& host,\n std::uint16_t port, std::size_t size) {\n LOG_WARN(\"Failed to decrypt packet from session {} ({}:{}), size={}. \"\n \"Possible causes: key mismatch, replay attack, or corrupted packet.\",\n session_id, host, port, size);\n}\n\n// Helper function to log packet processing - avoids clang-tidy bugprone-lambda-function-name\n// warning when LOG_WARN is used inside lambdas (Issue #72 debugging)\nvoid log_processing_packet(std::uint64_t session_id, const std::string& host,\n std::uint16_t port, std::size_t size) {\n LOG_WARN(\"Processing packet from session {} ({}:{}), size={}\",\n session_id, host, port, size);\n}\n\n// Additional helper functions for Issue #72 debugging - avoid bugprone-lambda-function-name\nvoid log_decrypted_frames(std::size_t frame_count, std::uint64_t session_id) {\n LOG_WARN(\"Decrypted {} frame(s) from session {}\", frame_count, session_id);\n}\n\nvoid log_frame_info(int kind, bool is_data) {\n LOG_WARN(\" Frame kind={}, is_data={}\", kind, is_data);\n}\n\nvoid log_tun_write_attempt(std::size_t bytes, std::uint64_t session_id) {\n LOG_WARN(\"Writing {} bytes to TUN from session {}\", bytes, session_id);\n}\n\nvoid log_tun_write_success(std::size_t bytes) {\n LOG_WARN(\"TUN write SUCCESS: {} bytes\", bytes);\n}\n\nvoid log_ack_processing() {\n LOG_WARN(\"Processing ACK frame\");\n}\n\n// Helper functions for ACK sending logging (Issue #72 fix)\n// These avoid the bugprone-lambda-function-name clang-tidy warning\nvoid log_ack_send_error(const std::error_code& ec) {\n LOG_WARN(\"Failed to send ACK to client: {}\", ec.message());\n}\n\nvoid log_ack_sent([[maybe_unused]] std::uint64_t ack, [[maybe_unused]] std::uint32_t bitmap) {\n LOG_DEBUG(\"Sent ACK to client: ack={}, bitmap={:#010x}\", ack, bitmap);\n}\n\nvoid log_new_client(const std::string& host, std::uint16_t port, std::uint64_t session_id) {\n LOG_INFO(\"New client connected from {}:{}, session {}\", host, port, session_id);\n\n g_stats.connections_total++;\n g_stats.connections_active++;\n\n auto& state = cli::cli_state();\n if (state.use_color) {\n std::cout << cli::colors::kBrightGreen << cli::symbols::kCircle << cli::colors::kReset\n << \" Client connected: \" << cli::colors::kBrightCyan << host << \":\" << port\n << cli::colors::kReset << \" (session \" << cli::colors::kDim << session_id\n << cli::colors::kReset << \")\" << '\\n';\n } else {\n std::cout << \"[+] Client connected: \" << host << \":\" << port << \" (session \" << session_id\n << \")\" << '\\n';\n }\n}\n\n[[maybe_unused]]\nvoid log_client_disconnected(const std::string& host, std::uint16_t port,\n std::uint64_t session_id) {\n LOG_INFO(\"Client disconnected: {}:{}, session {}\", host, port, session_id);\n\n if (g_stats.connections_active > 0) {\n g_stats.connections_active--;\n }\n\n auto& state = cli::cli_state();\n if (state.use_color) {\n std::cout << cli::colors::kBrightRed << cli::symbols::kCircleEmpty << cli::colors::kReset\n << \" Client disconnected: \" << cli::colors::kDim << host << \":\" << port\n << cli::colors::kReset << \" (session \" << cli::colors::kDim << session_id\n << cli::colors::kReset << \")\" << '\\n';\n } else {\n std::cout << \"[-] Client disconnected: \" << host << \":\" << port << \" (session \" << session_id\n << \")\" << '\\n';\n }\n}\n\nvoid log_packet_received([[maybe_unused]] std::size_t size,\n [[maybe_unused]] const std::string& host,\n [[maybe_unused]] std::uint16_t port) {\n LOG_DEBUG(\"Received {} bytes from {}:{}\", size, host, port);\n g_stats.total_packets_received++;\n g_stats.total_bytes_received += size;\n}\n\nvoid print_configuration(const server::ServerConfig& config) {\n cli::print_section(\"Server Configuration\");\n cli::print_row(\"Listen Address\", config.listen_address + \":\" + std::to_string(config.listen_port));\n cli::print_row(\"Max Clients\", std::to_string(config.max_clients));\n cli::print_row(\"Session Timeout\", std::to_string(config.session_timeout.count()) + \"s\");\n cli::print_row(\"TUN Device\", config.tunnel.tun.device_name);\n cli::print_row(\"TUN IP\", config.tunnel.tun.ip_address);\n cli::print_row(\"IP Pool\", config.ip_pool_start + \" - \" + config.ip_pool_end);\n cli::print_row(\"NAT Enabled\", config.nat.enable_forwarding ? \"Yes\" : \"No\");\n if (config.nat.enable_forwarding) {\n cli::print_row(\"External Interface\", config.nat.external_interface);\n }\n cli::print_row(\"Verbose\", config.verbose ? \"Yes\" : \"No\");\n cli::print_row(\"Daemon Mode\", config.daemon_mode ? \"Yes\" : \"No\");\n std::cout << '\\n';\n}\n\nvoid print_server_status(std::size_t max_clients) {\n auto now = std::chrono::steady_clock::now();\n auto uptime_seconds = std::chrono::duration_cast<std::chrono::seconds>(now - g_stats.start_time).count();\n\n cli::print_section(\"Server Status\");\n cli::print_row_colored(\"Status\", \"Running\", cli::colors::kBrightGreen);\n cli::print_row(\"Uptime\", cli::format_duration(uptime_seconds));\n cli::print_row(\"Active Clients\", std::to_string(g_stats.connections_active.load()) + \"/\" +\n std::to_string(max_clients));\n cli::print_row(\"Total Connections\", std::to_string(g_stats.connections_total.load()));\n cli::print_row(\"Bytes Sent\", cli::format_bytes(g_stats.total_bytes_sent.load()));\n cli::print_row(\"Bytes Received\", cli::format_bytes(g_stats.total_bytes_received.load()));\n cli::print_row(\"Packets Sent\", std::to_string(g_stats.total_packets_sent.load()));\n cli::print_row(\"Packets Received\", std::to_string(g_stats.total_packets_received.load()));\n std::cout << '\\n';\n}\n\n} // namespace\n\nint main(int argc, char* argv[]) {\n // Parse configuration\n server::ServerConfig config;\n std::error_code ec;\n\n if (!server::parse_args(argc, argv, config, ec)) {\n cli::print_error(\"Failed to parse arguments: \" + ec.message());\n std::cerr << '\\n';\n std::cerr << \"Usage: veil-server [-p <port>] [options]\" << '\\n';\n std::cerr << '\\n';\n std::cerr << \"Options:\" << '\\n';\n std::cerr << \" -p, --port <port> Listen port (default: 4433)\" << '\\n';\n std::cerr << \" -l, --listen <addr> Listen address (default: 0.0.0.0)\" << '\\n';\n std::cerr << \" -c, --config <file> Configuration file path\" << '\\n';\n std::cerr << \" -k, --key <file> Pre-shared key file\" << '\\n';\n std::cerr << \" -m, --max-clients <n> Maximum clients (default: 256)\" << '\\n';\n std::cerr << \" -d, --daemon Run as daemon\" << '\\n';\n std::cerr << \" -v, --verbose Enable verbose logging\" << '\\n';\n std::cerr << \" --tun-name <name> TUN device name (default: veil0)\" << '\\n';\n std::cerr << \" --tun-ip <ip> TUN device IP (default: 10.8.0.1)\" << '\\n';\n std::cerr << \" --nat Enable NAT forwarding\" << '\\n';\n std::cerr << \" --nat-interface <iface> External NAT interface\" << '\\n';\n std::cerr << '\\n';\n return EXIT_FAILURE;\n }\n\n // Finalize configuration (auto-detect interfaces, etc.)\n if (!server::finalize_config(config, ec)) {\n cli::print_error(\"Configuration finalization failed: \" + ec.message());\n return EXIT_FAILURE;\n }\n\n // Validate configuration\n std::string validation_error;\n if (!server::validate_config(config, validation_error)) {\n cli::print_error(\"Configuration error: \" + validation_error);\n return EXIT_FAILURE;\n }\n\n // Print banner (only if not daemon mode)\n if (!config.daemon_mode) {\n cli::print_banner(\"VEIL VPN Server\", \"1.0.0\");\n print_configuration(config);\n }\n\n // Initialize logging\n logging::configure_logging(config.verbose ? logging::LogLevel::debug : logging::LogLevel::info,\n true);\n LOG_INFO(\"VEIL Server starting...\");\n\n // Check if already running\n if (!config.pid_file.empty() && daemon::is_already_running(config.pid_file, ec)) {\n cli::print_error(\"Another instance is already running (PID file: \" + config.pid_file + \")\");\n return EXIT_FAILURE;\n }\n\n // Daemonize if requested\n if (config.daemon_mode) {\n daemon::DaemonConfig daemon_config;\n daemon_config.pid_file = config.pid_file;\n daemon_config.user = config.user;\n daemon_config.group = config.group;\n\n cli::print_info(\"Daemonizing...\");\n LOG_INFO(\"Daemonizing...\");\n if (!daemon::daemonize(daemon_config, ec)) {\n cli::print_error(\"Failed to daemonize: \" + ec.message());\n LOG_ERROR(\"Failed to daemonize: {}\", ec.message());\n return EXIT_FAILURE;\n }\n }\n\n // Create PID file if not daemonizing\n std::unique_ptr<daemon::PidFile> pid_file;\n if (!config.daemon_mode && !config.pid_file.empty()) {\n pid_file = std::make_unique<daemon::PidFile>(config.pid_file);\n if (!pid_file->create(ec)) {\n cli::print_warning(\"Failed to create PID file: \" + ec.message());\n LOG_WARN(\"Failed to create PID file: {}\", ec.message());\n }\n }\n\n // Load keys\n [[maybe_unused]] crypto::KeyPair key_pair = crypto::generate_x25519_keypair();\n std::vector<std::uint8_t> psk;\n if (!config.tunnel.key_file.empty()) {\n std::array<std::uint8_t, 32> psk_arr{};\n if (load_key_from_file(config.tunnel.key_file, psk_arr, ec)) {\n psk.assign(psk_arr.begin(), psk_arr.end());\n cli::print_success(\"Pre-shared key loaded\");\n } else {\n std::string error_msg = format_key_error(\"Pre-shared key\", config.tunnel.key_file, ec);\n cli::print_error(error_msg);\n LOG_ERROR(\"{}\", error_msg);\n return EXIT_FAILURE;\n }\n } else {\n // PSK is required for server operation\n cli::print_error(\"Pre-shared key file is required but not specified\");\n std::cerr << '\\n';\n std::cerr << \"The server requires a pre-shared key (PSK) for secure client authentication.\" << '\\n';\n std::cerr << '\\n';\n std::cerr << \"To generate a new 32-byte PSK file:\" << '\\n';\n std::cerr << \" head -c 32 /dev/urandom > /etc/veil/server.key\" << '\\n';\n std::cerr << '\\n';\n std::cerr << \"Then start the server with:\" << '\\n';\n std::cerr << \" veil-server -k /etc/veil/server.key\" << '\\n';\n std::cerr << '\\n';\n std::cerr << \"Or specify it in your config file:\" << '\\n';\n std::cerr << \" [crypto]\" << '\\n';\n std::cerr << \" preshared_key_file = /etc/veil/server.key\" << '\\n';\n std::cerr << '\\n';\n std::cerr << \"Remember to copy this key securely to all clients!\" << '\\n';\n LOG_ERROR(\"Pre-shared key file not specified. Use -k/--key option or config file.\");\n return EXIT_FAILURE;\n }\n\n // Open TUN device\n cli::print_info(\"Opening TUN device...\");\n tun::TunDevice tun_device;\n if (!tun_device.open(config.tunnel.tun, ec)) {\n cli::print_error(\"Failed to open TUN device: \" + ec.message());\n LOG_ERROR(\"Failed to open TUN device: {}\", ec.message());\n return EXIT_FAILURE;\n }\n cli::print_success(\"TUN device \" + tun_device.device_name() + \" opened with IP \" +\n config.tunnel.tun.ip_address);\n LOG_INFO(\"TUN device {} opened with IP {}\", tun_device.device_name(),\n config.tunnel.tun.ip_address);\n\n // Setup routing and NAT\n tun::RouteManager route_manager;\n\n if (config.nat.enable_forwarding) {\n cli::print_info(\"Configuring NAT...\");\n config.nat.internal_interface = tun_device.device_name();\n if (!route_manager.configure_nat(config.nat, ec)) {\n cli::print_error(\"Failed to configure NAT: \" + ec.message());\n LOG_ERROR(\"Failed to configure NAT: {}\", ec.message());\n return EXIT_FAILURE;\n }\n cli::print_success(\"NAT configured: \" + config.nat.internal_interface + \" -> \" +\n config.nat.external_interface);\n LOG_INFO(\"NAT configured: {} -> {}\", config.nat.internal_interface,\n config.nat.external_interface);\n }\n\n // Open UDP socket\n cli::print_info(\"Opening UDP socket...\");\n transport::UdpSocket udp_socket;\n if (!udp_socket.open(config.listen_port, true, ec)) {\n cli::print_error(\"Failed to open UDP socket: \" + ec.message());\n LOG_ERROR(\"Failed to open UDP socket: {}\", ec.message());\n return EXIT_FAILURE;\n }\n cli::print_success(\"Listening on \" + config.listen_address + \":\" +\n std::to_string(config.listen_port));\n LOG_INFO(\"Listening on {}:{}\", config.listen_address, config.listen_port);\n\n // Create session table\n server::SessionTable session_table(config.max_clients, config.session_timeout,\n config.ip_pool_start, config.ip_pool_end);\n\n // Create handshake responder\n utils::TokenBucket rate_limiter(100.0, std::chrono::milliseconds(10)); // 100 tokens, 10ms refill\n handshake::HandshakeResponder responder(psk, config.tunnel.handshake_skew_tolerance, rate_limiter);\n\n // Setup signal handlers\n auto& sig_handler = signal::SignalHandler::instance();\n sig_handler.setup_defaults();\n\n std::atomic<bool> running{true};\n sig_handler.on(signal::Signal::kInterrupt, [&running](signal::Signal) {\n log_signal_sigint();\n running.store(false);\n });\n sig_handler.on(signal::Signal::kTerminate, [&running](signal::Signal) {\n log_signal_sigterm();\n running.store(false);\n });\n\n // Session cleanup timer\n auto last_cleanup = std::chrono::steady_clock::now();\n auto last_stats = std::chrono::steady_clock::now();\n\n // Record start time\n g_stats.start_time = std::chrono::steady_clock::now();\n\n // Print running status\n std::cout << '\\n';\n cli::print_section(\"Server Running\");\n\n auto& cli_st = cli::cli_state();\n if (cli_st.use_color) {\n std::cout << cli::colors::kBrightGreen << cli::symbols::kCircle << cli::colors::kReset\n << \" Server is ready and accepting connections\" << '\\n';\n std::cout << cli::colors::kDim << \" Press Ctrl+C to stop\" << cli::colors::kReset << '\\n';\n } else {\n std::cout << \"[*] Server is ready and accepting connections\" << '\\n';\n std::cout << \" Press Ctrl+C to stop\" << '\\n';\n }\n std::cout << '\\n';\n\n LOG_INFO(\"Server running, accepting connections...\");\n\n // Main server loop\n std::array<std::uint8_t, kMaxPacketSize> buffer{};\n\n while (running.load() && !sig_handler.should_terminate()) {\n // Poll UDP socket\n udp_socket.poll(\n [&](const transport::UdpPacket& pkt) {\n // Early rejection of obviously malformed packets (DoS prevention).\n // This filters out undersized packets before any crypto processing.\n if (pkt.data.size() < kMinPacketSize || pkt.data.size() > kMaxPacketSize) {\n LOG_DEBUG(\"Dropping packet with invalid size {} from {}:{}\",\n pkt.data.size(), pkt.remote.host, pkt.remote.port);\n return;\n }\n\n log_packet_received(pkt.data.size(), pkt.remote.host, pkt.remote.port);\n\n // Check if this is from an existing session\n auto* session = session_table.find_by_endpoint(pkt.remote);\n\n if (session != nullptr) {\n // Process data from existing session\n session_table.update_activity(session->session_id);\n session->packets_received++;\n session->bytes_received += pkt.data.size();\n\n if (session->transport) {\n // Use WARN level temporarily for Issue #72 debugging\n log_processing_packet(session->session_id, pkt.remote.host,\n pkt.remote.port, pkt.data.size());\n auto frames = session->transport->decrypt_packet(pkt.data);\n if (frames) {\n // Use helper functions for Issue #72 debugging (avoid bugprone-lambda-function-name)\n log_decrypted_frames(frames->size(), session->session_id);\n for (const auto& frame : *frames) {\n log_frame_info(static_cast<int>(frame.kind),\n frame.kind == mux::FrameKind::kData);\n if (frame.kind == mux::FrameKind::kData) {\n // Issue #74 fix: Extract source IP from the IP packet header and update\n // session's tunnel_ip. This is necessary because the client may use its\n // own configured tunnel IP (e.g., 10.8.0.2) instead of the server-assigned\n // IP (e.g., 10.8.0.254). Without this fix, return packets from the internet\n // cannot be routed back to the correct client because the destination IP\n // in return packets matches the client's source IP, not the server-assigned IP.\n const auto& payload = frame.data.payload;\n // Check for valid IPv4 packet: minimum 20 bytes header AND IPv4 version (first nibble == 4)\n if (payload.size() >= 20 && ((payload[0] >> 4) == 4)) {\n // Extract source IP from IPv4 header (bytes 12-15)\n std::uint32_t src_ip = (static_cast<std::uint32_t>(payload[12]) << 24) |\n (static_cast<std::uint32_t>(payload[13]) << 16) |\n (static_cast<std::uint32_t>(payload[14]) << 8) |\n static_cast<std::uint32_t>(payload[15]);\n // Only update if source IP is non-zero (valid)\n if (src_ip != 0) {\n struct in_addr src_addr {};\n src_addr.s_addr = htonl(src_ip);\n char src_ip_str[INET_ADDRSTRLEN];\n inet_ntop(AF_INET, &src_addr, src_ip_str, sizeof(src_ip_str));\n\n // Update session's tunnel IP if it differs from the packet's source IP\n // This ensures return packets can be routed back to this client\n session_table.update_tunnel_ip(session->session_id, src_ip_str);\n }\n }\n\n // Write to TUN device\n log_tun_write_attempt(frame.data.payload.size(), session->session_id);\n if (!tun_device.write(frame.data.payload, ec)) {\n log_tun_write_error(ec);\n } else {\n log_tun_write_success(frame.data.payload.size());\n }\n\n // Send ACK back to client (Issue #72 fix)\n // Without ACKs, the client keeps retransmitting packets\n // IMPORTANT: Use encrypt_frame() instead of encrypt_data() to preserve the ACK frame kind.\n // encrypt_data() wraps data in a DATA frame, which would cause the receiver to\n // incorrectly interpret the ACK as data and try to write it to TUN.\n auto ack_info = session->transport->generate_ack(frame.data.stream_id);\n auto ack_frame = mux::make_ack_frame(ack_info.stream_id, ack_info.ack, ack_info.bitmap);\n auto ack_packet = session->transport->encrypt_frame(ack_frame);\n if (!udp_socket.send(ack_packet, pkt.remote, ec)) {\n log_ack_send_error(ec);\n } else {\n log_ack_sent(ack_info.ack, ack_info.bitmap);\n }\n } else if (frame.kind == mux::FrameKind::kAck) {\n log_ack_processing();\n session->transport->process_ack(frame.ack);\n }\n }\n } else {\n // Log decryption failure for diagnostics\n log_decryption_failure(session->session_id, pkt.remote.host,\n pkt.remote.port, pkt.data.size());\n }\n }\n } else {\n // Log when packet doesn't match any existing session\n LOG_DEBUG(\"No session found for endpoint {}:{}, treating as potential handshake\",\n pkt.remote.host, pkt.remote.port);\n // New connection - handle handshake\n auto hs_result = responder.handle_init(pkt.data);\n if (hs_result) {\n if (!udp_socket.send(hs_result->response, pkt.remote, ec)) {\n log_handshake_send_error(ec);\n } else {\n // Create transport session\n auto transport = std::make_unique<transport::TransportSession>(\n hs_result->session, config.tunnel.transport);\n\n // Create client session\n auto session_id = session_table.create_session(pkt.remote, std::move(transport));\n if (session_id) {\n log_new_client(pkt.remote.host, pkt.remote.port, *session_id);\n }\n }\n }\n }\n },\n 10, ec);\n\n // Read from TUN and route to appropriate client\n auto tun_read = tun_device.read_into(buffer, ec);\n if (tun_read > 0) {\n // Parse IP header to find destination\n if (tun_read >= 20) {\n // Check if this is an IPv4 packet (version nibble == 4)\n std::uint8_t version = (buffer[0] >> 4);\n if (version != 4) {\n LOG_DEBUG(\"TUN read: {} bytes, non-IPv4 packet (version={}), skipping\", tun_read, version);\n } else {\n // Extract source IP from IPv4 header (bytes 12-15)\n std::uint32_t src_ip = (static_cast<std::uint32_t>(buffer[12]) << 24) |\n (static_cast<std::uint32_t>(buffer[13]) << 16) |\n (static_cast<std::uint32_t>(buffer[14]) << 8) |\n static_cast<std::uint32_t>(buffer[15]);\n // Extract destination IP from IPv4 header (bytes 16-19)\n std::uint32_t dst_ip = (static_cast<std::uint32_t>(buffer[16]) << 24) |\n (static_cast<std::uint32_t>(buffer[17]) << 16) |\n (static_cast<std::uint32_t>(buffer[18]) << 8) |\n static_cast<std::uint32_t>(buffer[19]);\n\n // Convert to string\n char src_ip_str[INET_ADDRSTRLEN];\n char dst_ip_str[INET_ADDRSTRLEN];\n struct in_addr src_addr {};\n struct in_addr dst_addr {};\n src_addr.s_addr = htonl(src_ip);\n dst_addr.s_addr = htonl(dst_ip);\n inet_ntop(AF_INET, &src_addr, src_ip_str, sizeof(src_ip_str));\n inet_ntop(AF_INET, &dst_addr, dst_ip_str, sizeof(dst_ip_str));\n\n // Use WARN level temporarily for Issue #74 debugging (return traffic routing)\n LOG_WARN(\"TUN read: {} bytes, {} -> {}\", tun_read, src_ip_str, dst_ip_str);\n\n // Find session by tunnel IP\n auto* session = session_table.find_by_tunnel_ip(dst_ip_str);\n if (session != nullptr && session->transport) {\n LOG_WARN(\"Routing {} bytes to session {} ({}:{})\",\n tun_read, session->session_id, session->endpoint.host, session->endpoint.port);\n // Encrypt and send\n auto packets = session->transport->encrypt_data(\n std::span<const std::uint8_t>(buffer.data(), static_cast<std::size_t>(tun_read)));\n for (const auto& pkt : packets) {\n if (!udp_socket.send(pkt, session->endpoint, ec)) {\n LOG_ERROR(\"Failed to send to client: {}\", ec.message());\n } else {\n session->packets_sent++;\n session->bytes_sent += pkt.size();\n g_stats.total_packets_sent++;\n g_stats.total_bytes_sent += pkt.size();\n }\n }\n } else {\n LOG_WARN(\"No session found for tunnel IP {}, packet dropped\", dst_ip_str);\n }\n | |
| [2026-01-28T20:05:15.480Z] [INFO] }\n }\n }\n\n // Periodic session cleanup\n auto now = std::chrono::steady_clock::now();\n if (now - last_cleanup >= config.cleanup_interval) {\n auto expired = session_table.cleanup_expired();\n if (expired > 0) {\n if (g_stats.connections_active >= expired) {\n g_stats.connections_active -= expired;\n } else {\n g_stats.connections_active = 0;\n }\n cli::print_info(\"Cleaned up \" + std::to_string(expired) + \" expired session(s)\");\n LOG_INFO(\"Cleaned up {} expired sessions\", expired);\n }\n last_cleanup = now;\n }\n\n // Periodic stats display (every 60 seconds in verbose mode)\n if (config.verbose && (now - last_stats >= std::chrono::seconds(60))) {\n print_server_status(config.max_clients);\n last_stats = now;\n }\n\n // Process retransmits for all sessions (use for_each_session to avoid use-after-free)\n session_table.for_each_session([&](server::ClientSession* session) {\n if (session->transport) {\n auto retransmits = session->transport->get_retransmit_packets();\n for (const auto& pkt : retransmits) {\n if (!udp_socket.send(pkt, session->endpoint, ec)) {\n log_retransmit_error(ec);\n }\n }\n }\n });\n }\n\n // Cleanup\n std::cout << '\\n';\n cli::print_section(\"Shutdown\");\n cli::print_info(\"Cleaning up routes and NAT...\");\n LOG_INFO(\"Shutting down...\");\n route_manager.cleanup();\n\n // Print final stats\n if (!config.daemon_mode) {\n print_server_status(config.max_clients);\n }\n\n cli::print_success(\"VEIL Server stopped gracefully\");\n LOG_INFO(\"VEIL Server stopped\");\n return EXIT_SUCCESS;\n}\n","numLines":675,"startLine":1,"totalLines":675}}} | |
| [2026-01-28T20:05:21.237Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01Y2AJvqePLu28vUBnsJr5C4", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "text", | |
| "text": "Now I have a clear picture of the packet flow. Looking at the logs more carefully, I see:\n\n1. On server side, packets with 50 bytes and \"unknown IP version\" are being written to TUN and failing\n2. On client side, similar 50-byte packets with wrong IP versions are succeeding (Wintun on Windows is more permissive)\n\nLet me look at the TUN write function to understand the issue better." | |
| } | |
| ], | |
| "stop_reason": null, | |
| "stop_sequence": null, | |
| "usage": { | |
| "input_tokens": 1, | |
| "cache_creation_input_tokens": 11382, | |
| "cache_read_input_tokens": 81377, | |
| "cache_creation": { | |
| "ephemeral_5m_input_tokens": 11382, | |
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| "service_tier": "standard" | |
| }, | |
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| }, | |
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| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "8e5549bb-c21d-4a75-89f1-9b298a6e71f2" | |
| } | |
| [2026-01-28T20:05:22.854Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01Y2AJvqePLu28vUBnsJr5C4", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_012P4cUN9gQGuFYoQrLqJpta", | |
| "name": "Grep", | |
| "input": { | |
| "pattern": "TunDevice::write.*unknown IP version|TunDevice::write.*first byte", | |
| "glob": "**/*.cpp", | |
| "output_mode": "files_with_matches" | |
| } | |
| } | |
| ], | |
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| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "39c7404f-5884-4e99-98e2-997794e0c3e9" | |
| } | |
| [2026-01-28T20:05:23.376Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_012P4cUN9gQGuFYoQrLqJpta", | |
| "type": "tool_result", | |
| "content": "Found 2 files\nsrc/tun/tun_device_linux.cpp\nsrc/tun/tun_device_windows.cpp" | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "58210e61-0435-40f6-ae1b-60892295b7eb", | |
| "tool_use_result": { | |
| "mode": "files_with_matches", | |
| "filenames": [ | |
| "src/tun/tun_device_linux.cpp", | |
| "src/tun/tun_device_windows.cpp" | |
| ], | |
| "numFiles": 2 | |
| } | |
| } | |
| [2026-01-28T20:05:27.240Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01WoxQuNMWYM9NYzefLAzC6M", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_018TDXnG3Y7uePEFJkePHamJ", | |
| "name": "Read", | |
| "input": { | |
| "file_path": "/tmp/gh-issue-solver-1769630568012/src/tun/tun_device_linux.cpp" | |
| } | |
| } | |
| ], | |
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| "uuid": "04660473-019c-4b5d-8bc0-8f7408c34bd5" | |
| } | |
| [2026-01-28T20:05:27.256Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_018TDXnG3Y7uePEFJkePHamJ", | |
| "type": "tool_result", | |
| "content": " 1→#include \"tun/tun_device.h\"\n 2→\n 3→#include <arpa/inet.h>\n 4→#include <cerrno>\n 5→#include <cstring>\n 6→#include <fcntl.h>\n 7→#include <linux/if_tun.h>\n 8→#include <net/if.h>\n 9→#include <sys/epoll.h>\n 10→#include <sys/ioctl.h>\n 11→#include <sys/socket.h>\n 12→#include <unistd.h>\n 13→\n 14→#include <array>\n 15→#include <system_error>\n 16→\n 17→#include \"common/logging/logger.h\"\n 18→\n 19→namespace {\n 20→std::error_code last_error() { return std::error_code(errno, std::generic_category()); }\n 21→\n 22→// Maximum packet size for TUN devices.\n 23→constexpr std::size_t kMaxPacketSize = 65535;\n 24→\n 25→// TUN packet info header size (4 bytes: flags + proto).\n 26→constexpr std::size_t kTunPiSize = 4;\n 27→} // namespace\n 28→\n 29→namespace veil::tun {\n 30→\n 31→TunDevice::TunDevice() = default;\n 32→\n 33→TunDevice::~TunDevice() { close(); }\n 34→\n 35→TunDevice::TunDevice(TunDevice&& other) noexcept\n 36→ : fd_(other.fd_),\n 37→ device_name_(std::move(other.device_name_)),\n 38→ stats_(other.stats_),\n 39→ packet_info_(other.packet_info_) {\n 40→ other.fd_ = -1;\n 41→}\n 42→\n 43→TunDevice& TunDevice::operator=(TunDevice&& other) noexcept {\n 44→ if (this != &other) {\n 45→ close();\n 46→ fd_ = other.fd_;\n 47→ device_name_ = std::move(other.device_name_);\n 48→ stats_ = other.stats_;\n 49→ packet_info_ = other.packet_info_;\n 50→ other.fd_ = -1;\n 51→ }\n 52→ return *this;\n 53→}\n 54→\n 55→bool TunDevice::open(const TunConfig& config, std::error_code& ec) {\n 56→ // Open the TUN clone device.\n 57→ fd_ = ::open(\"/dev/net/tun\", O_RDWR | O_NONBLOCK);\n 58→ if (fd_ < 0) {\n 59→ ec = last_error();\n 60→ LOG_ERROR(\"Failed to open /dev/net/tun: {}\", ec.message());\n 61→ return false;\n 62→ }\n 63→\n 64→ // Configure the TUN device.\n 65→ ifreq ifr{};\n 66→ ifr.ifr_flags = IFF_TUN | IFF_NO_PI;\n 67→ if (config.packet_info) {\n 68→ ifr.ifr_flags = IFF_TUN;\n 69→ packet_info_ = true;\n 70→ }\n 71→\n 72→ // Set device name if provided.\n 73→ if (!config.device_name.empty()) {\n 74→ // IFNAMSIZ is typically 16, so we use size()-1 to leave room for null terminator.\n 75→ std::strncpy(ifr.ifr_name, config.device_name.c_str(), IFNAMSIZ - 1);\n 76→ ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n 77→ }\n 78→\n 79→ // Create the TUN device.\n 80→ if (ioctl(fd_, TUNSETIFF, &ifr) < 0) {\n 81→ ec = last_error();\n 82→ LOG_ERROR(\"Failed to create TUN device: {}\", ec.message());\n 83→ close();\n 84→ return false;\n 85→ }\n 86→\n 87→ device_name_ = ifr.ifr_name;\n 88→ LOG_INFO(\"Created TUN device: {}\", device_name_);\n 89→\n 90→ // Configure IP address if provided.\n 91→ if (!config.ip_address.empty()) {\n 92→ if (!configure_address(config, ec)) {\n 93→ close();\n 94→ return false;\n 95→ }\n 96→ }\n 97→\n 98→ // Set MTU.\n 99→ if (config.mtu > 0) {\n 100→ if (!configure_mtu(config.mtu, ec)) {\n 101→ close();\n 102→ return false;\n 103→ }\n 104→ }\n 105→\n 106→ // Bring interface up.\n 107→ if (config.bring_up) {\n 108→ if (!bring_interface_up(ec)) {\n 109→ close();\n 110→ return false;\n 111→ }\n 112→ }\n 113→\n 114→ return true;\n 115→}\n 116→\n 117→void TunDevice::close() {\n 118→ if (fd_ >= 0) {\n 119→ ::close(fd_);\n 120→ fd_ = -1;\n 121→ LOG_INFO(\"Closed TUN device: {}\", device_name_);\n 122→ }\n 123→}\n 124→\n 125→bool TunDevice::configure_address(const TunConfig& config, std::error_code& ec) {\n 126→ // Need a socket for ioctl operations.\n 127→ const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n 128→ if (sock < 0) {\n 129→ ec = last_error();\n 130→ LOG_ERROR(\"Failed to create socket for TUN configuration: {}\", ec.message());\n 131→ return false;\n 132→ }\n 133→\n 134→ ifreq ifr{};\n 135→ std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n 136→ ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n 137→\n 138→ // Set IP address.\n 139→ auto* addr = reinterpret_cast<sockaddr_in*>(&ifr.ifr_addr);\n 140→ addr->sin_family = AF_INET;\n 141→ if (inet_pton(AF_INET, config.ip_address.c_str(), &addr->sin_addr) != 1) {\n 142→ ec = std::make_error_code(std::errc::invalid_argument);\n 143→ LOG_ERROR(\"Invalid IP address: {}\", config.ip_address);\n 144→ ::close(sock);\n 145→ return false;\n 146→ }\n 147→\n 148→ if (ioctl(sock, SIOCSIFADDR, &ifr) < 0) {\n 149→ ec = last_error();\n 150→ LOG_ERROR(\"Failed to set IP address: {}\", ec.message());\n 151→ ::close(sock);\n 152→ return false;\n 153→ }\n 154→\n 155→ LOG_INFO(\"Set IP address {} on {}\", config.ip_address, device_name_);\n 156→\n 157→ // Set netmask.\n 158→ auto* mask = reinterpret_cast<sockaddr_in*>(&ifr.ifr_netmask);\n 159→ mask->sin_family = AF_INET;\n 160→ if (inet_pton(AF_INET, config.netmask.c_str(), &mask->sin_addr) != 1) {\n 161→ ec = std::make_error_code(std::errc::invalid_argument);\n 162→ LOG_ERROR(\"Invalid netmask: {}\", config.netmask);\n 163→ ::close(sock);\n 164→ return false;\n 165→ }\n 166→\n 167→ if (ioctl(sock, SIOCSIFNETMASK, &ifr) < 0) {\n 168→ ec = last_error();\n 169→ LOG_ERROR(\"Failed to set netmask: {}\", ec.message());\n 170→ ::close(sock);\n 171→ return false;\n 172→ }\n 173→\n 174→ LOG_INFO(\"Set netmask {} on {}\", config.netmask, device_name_);\n 175→\n 176→ ::close(sock);\n 177→ return true;\n 178→}\n 179→\n 180→bool TunDevice::configure_mtu(int mtu, std::error_code& ec) {\n 181→ const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n 182→ if (sock < 0) {\n 183→ ec = last_error();\n 184→ return false;\n 185→ }\n 186→\n 187→ ifreq ifr{};\n 188→ std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n 189→ ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n 190→ ifr.ifr_mtu = mtu;\n 191→\n 192→ if (ioctl(sock, SIOCSIFMTU, &ifr) < 0) {\n 193→ ec = last_error();\n 194→ LOG_ERROR(\"Failed to set MTU to {}: {}\", mtu, ec.message());\n 195→ ::close(sock);\n 196→ return false;\n 197→ }\n 198→\n 199→ LOG_INFO(\"Set MTU {} on {}\", mtu, device_name_);\n 200→ ::close(sock);\n 201→ return true;\n 202→}\n 203→\n 204→bool TunDevice::bring_interface_up(std::error_code& ec) {\n 205→ const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n 206→ if (sock < 0) {\n 207→ ec = last_error();\n 208→ return false;\n 209→ }\n 210→\n 211→ ifreq ifr{};\n 212→ std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n 213→ ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n 214→\n 215→ // Get current flags.\n 216→ if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {\n 217→ ec = last_error();\n 218→ LOG_ERROR(\"Failed to get interface flags: {}\", ec.message());\n 219→ ::close(sock);\n 220→ return false;\n 221→ }\n 222→\n 223→ // Set IFF_UP flag.\n 224→ ifr.ifr_flags |= IFF_UP | IFF_RUNNING;\n 225→\n 226→ if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {\n 227→ ec = last_error();\n 228→ LOG_ERROR(\"Failed to bring interface up: {}\", ec.message());\n 229→ ::close(sock);\n 230→ return false;\n 231→ }\n 232→\n 233→ LOG_INFO(\"Brought interface {} up\", device_name_);\n 234→ ::close(sock);\n 235→ return true;\n 236→}\n 237→\n 238→bool TunDevice::set_mtu(int mtu, std::error_code& ec) { return configure_mtu(mtu, ec); }\n 239→\n 240→bool TunDevice::set_up(bool up, std::error_code& ec) {\n 241→ const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n 242→ if (sock < 0) {\n 243→ ec = last_error();\n 244→ return false;\n 245→ }\n 246→\n 247→ ifreq ifr{};\n 248→ std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n 249→ ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n 250→\n 251→ if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {\n 252→ ec = last_error();\n 253→ ::close(sock);\n 254→ return false;\n 255→ }\n 256→\n 257→ if (up) {\n 258→ ifr.ifr_flags |= IFF_UP | IFF_RUNNING;\n 259→ } else {\n 260→ ifr.ifr_flags &= ~(IFF_UP | IFF_RUNNING);\n 261→ }\n 262→\n 263→ if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {\n 264→ ec = last_error();\n 265→ ::close(sock);\n 266→ return false;\n 267→ }\n 268→\n 269→ LOG_INFO(\"Set interface {} {}\", device_name_, up ? \"up\" : \"down\");\n 270→ ::close(sock);\n 271→ return true;\n 272→}\n 273→\n 274→std::optional<std::vector<std::uint8_t>> TunDevice::read(std::error_code& ec) {\n 275→ std::array<std::uint8_t, kMaxPacketSize> buffer{};\n 276→ const auto n = read_into(buffer, ec);\n 277→ if (n <= 0) {\n 278→ return std::nullopt;\n 279→ }\n 280→ return std::vector<std::uint8_t>(buffer.begin(), buffer.begin() + n);\n 281→}\n 282→\n 283→std::ptrdiff_t TunDevice::read_into(std::span<std::uint8_t> buffer, std::error_code& ec) {\n 284→ const auto n = ::read(fd_, buffer.data(), buffer.size());\n 285→ if (n < 0) {\n 286→ if (errno == EAGAIN || errno == EWOULDBLOCK) {\n 287→ return 0; // No data available.\n 288→ }\n 289→ ec = last_error();\n 290→ stats_.read_errors++;\n 291→ return -1;\n 292→ }\n 293→\n 294→ stats_.packets_read++;\n 295→ stats_.bytes_read += static_cast<std::uint64_t>(n);\n 296→\n 297→ // If packet_info is enabled, strip the 4-byte header.\n 298→ if (packet_info_ && n >= static_cast<std::ptrdiff_t>(kTunPiSize)) {\n 299→ // Move data to beginning, skipping the header.\n 300→ std::memmove(buffer.data(), buffer.data() + kTunPiSize, static_cast<std::size_t>(n) - kTunPiSize);\n 301→ return n - static_cast<std::ptrdiff_t>(kTunPiSize);\n 302→ }\n 303→\n 304→ return n;\n 305→}\n 306→\n 307→bool TunDevice::write(std::span<const std::uint8_t> packet, std::error_code& ec) {\n 308→ std::ptrdiff_t n = 0;\n 309→\n 310→ // Log packet details for diagnostics (Issue #74)\n 311→ // Use WARN level so logging is always visible regardless of build type\n 312→ if (packet.size() >= 20) {\n 313→ std::uint8_t version = (packet[0] >> 4) & 0x0F;\n 314→ std::uint8_t ihl = packet[0] & 0x0F; // IP Header Length in 32-bit words\n 315→ std::uint8_t protocol = packet[9]; // Protocol field\n 316→ if (version == 4) {\n 317→ std::uint32_t src_ip = (static_cast<std::uint32_t>(packet[12]) << 24) |\n 318→ (static_cast<std::uint32_t>(packet[13]) << 16) |\n 319→ (static_cast<std::uint32_t>(packet[14]) << 8) |\n 320→ static_cast<std::uint32_t>(packet[15]);\n 321→ std::uint32_t dst_ip = (static_cast<std::uint32_t>(packet[16]) << 24) |\n 322→ (static_cast<std::uint32_t>(packet[17]) << 16) |\n 323→ (static_cast<std::uint32_t>(packet[18]) << 8) |\n 324→ static_cast<std::uint32_t>(packet[19]);\n 325→ std::uint16_t total_len = static_cast<std::uint16_t>(\n 326→ (static_cast<unsigned int>(packet[2]) << 8) |\n 327→ static_cast<unsigned int>(packet[3]));\n 328→ LOG_WARN(\"TunDevice::write: {} bytes, IPv4 {}.{}.{}.{} -> {}.{}.{}.{}, \"\n 329→ \"IHL={}, proto={}, total_len={}\",\n 330→ packet.size(),\n 331→ (src_ip >> 24) & 0xFF, (src_ip >> 16) & 0xFF,\n 332→ (src_ip >> 8) & 0xFF, src_ip & 0xFF,\n 333→ (dst_ip >> 24) & 0xFF, (dst_ip >> 16) & 0xFF,\n 334→ (dst_ip >> 8) & 0xFF, dst_ip & 0xFF,\n 335→ ihl, protocol, total_len);\n 336→ } else if (version == 6) {\n 337→ LOG_WARN(\"TunDevice::write: {} bytes, IPv6 packet\", packet.size());\n 338→ } else {\n 339→ LOG_WARN(\"TunDevice::write: {} bytes, unknown IP version {}, first byte=0x{:02x}\",\n 340→ packet.size(), version, packet[0]);\n 341→ }\n 342→ } else {\n 343→ LOG_WARN(\"TunDevice::write: {} bytes (too small for IP header)\", packet.size());\n 344→ }\n 345→\n 346→ if (packet_info_) {\n 347→ // Prepend 4-byte packet info header.\n 348→ std::vector<std::uint8_t> buffer(kTunPiSize + packet.size());\n 349→\n 350→ // Determine protocol type from packet\n 351→ std::uint16_t proto = 0x0800; // Default to ETH_P_IP (IPv4)\n 352→ if (packet.size() >= 1) {\n 353→ std::uint8_t version = (packet[0] >> 4) & 0x0F;\n 354→ if (version == 6) {\n 355→ proto = 0x86DD; // ETH_P_IPV6\n 356→ }\n 357→ }\n 358→\n 359→ // Flags = 0, Protocol in network byte order\n 360→ buffer[0] = 0;\n 361→ buffer[1] = 0;\n 362→ buffer[2] = static_cast<std::uint8_t>((proto >> 8) & 0xFF);\n 363→ buffer[3] = static_cast<std::uint8_t>(proto & 0xFF);\n 364→ std::memcpy(buffer.data() + kTunPiSize, packet.data(), packet.size());\n 365→ n = ::write(fd_, buffer.data(), buffer.size());\n 366→ if (n < 0 || static_cast<std::size_t>(n) != buffer.size()) {\n 367→ ec = last_error();\n 368→ stats_.write_errors++;\n 369→ LOG_ERROR(\"TunDevice::write: failed to write {} bytes (with PI header): {}\",\n 370→ packet.size(), ec.message());\n 371→ return false;\n 372→ }\n 373→ } else {\n 374→ n = ::write(fd_, packet.data(), packet.size());\n 375→ if (n < 0 || static_cast<std::size_t>(n) != packet.size()) {\n 376→ ec = last_error();\n 377→ stats_.write_errors++;\n 378→ LOG_ERROR(\"TunDevice::write: failed to write {} bytes: {}\", packet.size(), ec.message());\n 379→ return false;\n 380→ }\n 381→ }\n 382→\n 383→ stats_.packets_written++;\n 384→ stats_.bytes_written += packet.size();\n 385→ LOG_WARN(\"TunDevice::write: SUCCESS {} bytes written\", packet.size());\n 386→ return true;\n 387→}\n 388→\n 389→bool TunDevice::poll(const ReadHandler& handler, int timeout_ms, std::error_code& ec) {\n 390→ const int ep = epoll_create1(0);\n 391→ if (ep < 0) {\n 392→ ec = last_error();\n 393→ return false;\n 394→ }\n 395→\n 396→ epoll_event ev{};\n 397→ ev.events = EPOLLIN;\n 398→ ev.data.fd = fd_;\n 399→ if (epoll_ctl(ep, EPOLL_CTL_ADD, fd_, &ev) != 0) {\n 400→ ec = last_error();\n 401→ ::close(ep);\n 402→ return false;\n 403→ }\n 404→\n 405→ std::array<epoll_event, 4> events{};\n 406→ const int n = epoll_wait(ep, events.data(), static_cast<int>(events.size()), timeout_ms);\n 407→ if (n < 0) {\n 408→ ec = last_error();\n 409→ ::close(ep);\n 410→ return false;\n 411→ }\n 412→\n 413→ if (n == 0) {\n 414→ ::close(ep);\n 415→ return true; // Timeout, no data.\n 416→ }\n 417→\n 418→ for (int i = 0; i < n; ++i) {\n 419→ if ((events[static_cast<std::size_t>(i)].events & EPOLLIN) == 0U) {\n 420→ continue;\n 421→ }\n 422→ auto packet = read(ec);\n 423→ if (packet && !packet->empty()) {\n 424→ handler(*packet);\n 425→ }\n 426→ }\n 427→\n 428→ ::close(ep);\n 429→ return true;\n 430→}\n 431→\n 432→} // namespace veil::tun\n 433→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "a2deb69c-bf78-4ae0-b19a-eae4c2d0b217", | |
| "tool_use_result": { | |
| "type": "text", | |
| "file": { | |
| "filePath": "/tmp/gh-issue-solver-1769630568012/src/tun/tun_device_linux.cpp", | |
| "content": "#include \"tun/tun_device.h\"\n\n#include <arpa/inet.h>\n#include <cerrno>\n#include <cstring>\n#include <fcntl.h>\n#include <linux/if_tun.h>\n#include <net/if.h>\n#include <sys/epoll.h>\n#include <sys/ioctl.h>\n#include <sys/socket.h>\n#include <unistd.h>\n\n#include <array>\n#include <system_error>\n\n#include \"common/logging/logger.h\"\n\nnamespace {\nstd::error_code last_error() { return std::error_code(errno, std::generic_category()); }\n\n// Maximum packet size for TUN devices.\nconstexpr std::size_t kMaxPacketSize = 65535;\n\n// TUN packet info header size (4 bytes: flags + proto).\nconstexpr std::size_t kTunPiSize = 4;\n} // namespace\n\nnamespace veil::tun {\n\nTunDevice::TunDevice() = default;\n\nTunDevice::~TunDevice() { close(); }\n\nTunDevice::TunDevice(TunDevice&& other) noexcept\n : fd_(other.fd_),\n device_name_(std::move(other.device_name_)),\n stats_(other.stats_),\n packet_info_(other.packet_info_) {\n other.fd_ = -1;\n}\n\nTunDevice& TunDevice::operator=(TunDevice&& other) noexcept {\n if (this != &other) {\n close();\n fd_ = other.fd_;\n device_name_ = std::move(other.device_name_);\n stats_ = other.stats_;\n packet_info_ = other.packet_info_;\n other.fd_ = -1;\n }\n return *this;\n}\n\nbool TunDevice::open(const TunConfig& config, std::error_code& ec) {\n // Open the TUN clone device.\n fd_ = ::open(\"/dev/net/tun\", O_RDWR | O_NONBLOCK);\n if (fd_ < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to open /dev/net/tun: {}\", ec.message());\n return false;\n }\n\n // Configure the TUN device.\n ifreq ifr{};\n ifr.ifr_flags = IFF_TUN | IFF_NO_PI;\n if (config.packet_info) {\n ifr.ifr_flags = IFF_TUN;\n packet_info_ = true;\n }\n\n // Set device name if provided.\n if (!config.device_name.empty()) {\n // IFNAMSIZ is typically 16, so we use size()-1 to leave room for null terminator.\n std::strncpy(ifr.ifr_name, config.device_name.c_str(), IFNAMSIZ - 1);\n ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n }\n\n // Create the TUN device.\n if (ioctl(fd_, TUNSETIFF, &ifr) < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to create TUN device: {}\", ec.message());\n close();\n return false;\n }\n\n device_name_ = ifr.ifr_name;\n LOG_INFO(\"Created TUN device: {}\", device_name_);\n\n // Configure IP address if provided.\n if (!config.ip_address.empty()) {\n if (!configure_address(config, ec)) {\n close();\n return false;\n }\n }\n\n // Set MTU.\n if (config.mtu > 0) {\n if (!configure_mtu(config.mtu, ec)) {\n close();\n return false;\n }\n }\n\n // Bring interface up.\n if (config.bring_up) {\n if (!bring_interface_up(ec)) {\n close();\n return false;\n }\n }\n\n return true;\n}\n\nvoid TunDevice::close() {\n if (fd_ >= 0) {\n ::close(fd_);\n fd_ = -1;\n LOG_INFO(\"Closed TUN device: {}\", device_name_);\n }\n}\n\nbool TunDevice::configure_address(const TunConfig& config, std::error_code& ec) {\n // Need a socket for ioctl operations.\n const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n if (sock < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to create socket for TUN configuration: {}\", ec.message());\n return false;\n }\n\n ifreq ifr{};\n std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n\n // Set IP address.\n auto* addr = reinterpret_cast<sockaddr_in*>(&ifr.ifr_addr);\n addr->sin_family = AF_INET;\n if (inet_pton(AF_INET, config.ip_address.c_str(), &addr->sin_addr) != 1) {\n ec = std::make_error_code(std::errc::invalid_argument);\n LOG_ERROR(\"Invalid IP address: {}\", config.ip_address);\n ::close(sock);\n return false;\n }\n\n if (ioctl(sock, SIOCSIFADDR, &ifr) < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to set IP address: {}\", ec.message());\n ::close(sock);\n return false;\n }\n\n LOG_INFO(\"Set IP address {} on {}\", config.ip_address, device_name_);\n\n // Set netmask.\n auto* mask = reinterpret_cast<sockaddr_in*>(&ifr.ifr_netmask);\n mask->sin_family = AF_INET;\n if (inet_pton(AF_INET, config.netmask.c_str(), &mask->sin_addr) != 1) {\n ec = std::make_error_code(std::errc::invalid_argument);\n LOG_ERROR(\"Invalid netmask: {}\", config.netmask);\n ::close(sock);\n return false;\n }\n\n if (ioctl(sock, SIOCSIFNETMASK, &ifr) < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to set netmask: {}\", ec.message());\n ::close(sock);\n return false;\n }\n\n LOG_INFO(\"Set netmask {} on {}\", config.netmask, device_name_);\n\n ::close(sock);\n return true;\n}\n\nbool TunDevice::configure_mtu(int mtu, std::error_code& ec) {\n const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n if (sock < 0) {\n ec = last_error();\n return false;\n }\n\n ifreq ifr{};\n std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n ifr.ifr_mtu = mtu;\n\n if (ioctl(sock, SIOCSIFMTU, &ifr) < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to set MTU to {}: {}\", mtu, ec.message());\n ::close(sock);\n return false;\n }\n\n LOG_INFO(\"Set MTU {} on {}\", mtu, device_name_);\n ::close(sock);\n return true;\n}\n\nbool TunDevice::bring_interface_up(std::error_code& ec) {\n const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n if (sock < 0) {\n ec = last_error();\n return false;\n }\n\n ifreq ifr{};\n std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n\n // Get current flags.\n if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to get interface flags: {}\", ec.message());\n ::close(sock);\n return false;\n }\n\n // Set IFF_UP flag.\n ifr.ifr_flags |= IFF_UP | IFF_RUNNING;\n\n if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {\n ec = last_error();\n LOG_ERROR(\"Failed to bring interface up: {}\", ec.message());\n ::close(sock);\n return false;\n }\n\n LOG_INFO(\"Brought interface {} up\", device_name_);\n ::close(sock);\n return true;\n}\n\nbool TunDevice::set_mtu(int mtu, std::error_code& ec) { return configure_mtu(mtu, ec); }\n\nbool TunDevice::set_up(bool up, std::error_code& ec) {\n const int sock = socket(AF_INET, SOCK_DGRAM, 0);\n if (sock < 0) {\n ec = last_error();\n return false;\n }\n\n ifreq ifr{};\n std::strncpy(ifr.ifr_name, device_name_.c_str(), IFNAMSIZ - 1);\n ifr.ifr_name[IFNAMSIZ - 1] = '\\0';\n\n if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {\n ec = last_error();\n ::close(sock);\n return false;\n }\n\n if (up) {\n ifr.ifr_flags |= IFF_UP | IFF_RUNNING;\n } else {\n ifr.ifr_flags &= ~(IFF_UP | IFF_RUNNING);\n }\n\n if (ioctl(sock, SIOCSIFFLAGS, &ifr) < 0) {\n ec = last_error();\n ::close(sock);\n return false;\n }\n\n LOG_INFO(\"Set interface {} {}\", device_name_, up ? \"up\" : \"down\");\n ::close(sock);\n return true;\n}\n\nstd::optional<std::vector<std::uint8_t>> TunDevice::read(std::error_code& ec) {\n std::array<std::uint8_t, kMaxPacketSize> buffer{};\n const auto n = read_into(buffer, ec);\n if (n <= 0) {\n return std::nullopt;\n }\n return std::vector<std::uint8_t>(buffer.begin(), buffer.begin() + n);\n}\n\nstd::ptrdiff_t TunDevice::read_into(std::span<std::uint8_t> buffer, std::error_code& ec) {\n const auto n = ::read(fd_, buffer.data(), buffer.size());\n if (n < 0) {\n if (errno == EAGAIN || errno == EWOULDBLOCK) {\n return 0; // No data available.\n }\n ec = last_error();\n stats_.read_errors++;\n return -1;\n }\n\n stats_.packets_read++;\n stats_.bytes_read += static_cast<std::uint64_t>(n);\n\n // If packet_info is enabled, strip the 4-byte header.\n if (packet_info_ && n >= static_cast<std::ptrdiff_t>(kTunPiSize)) {\n // Move data to beginning, skipping the header.\n std::memmove(buffer.data(), buffer.data() + kTunPiSize, static_cast<std::size_t>(n) - kTunPiSize);\n return n - static_cast<std::ptrdiff_t>(kTunPiSize);\n }\n\n return n;\n}\n\nbool TunDevice::write(std::span<const std::uint8_t> packet, std::error_code& ec) {\n std::ptrdiff_t n = 0;\n\n // Log packet details for diagnostics (Issue #74)\n // Use WARN level so logging is always visible regardless of build type\n if (packet.size() >= 20) {\n std::uint8_t version = (packet[0] >> 4) & 0x0F;\n std::uint8_t ihl = packet[0] & 0x0F; // IP Header Length in 32-bit words\n std::uint8_t protocol = packet[9]; // Protocol field\n if (version == 4) {\n std::uint32_t src_ip = (static_cast<std::uint32_t>(packet[12]) << 24) |\n (static_cast<std::uint32_t>(packet[13]) << 16) |\n (static_cast<std::uint32_t>(packet[14]) << 8) |\n static_cast<std::uint32_t>(packet[15]);\n std::uint32_t dst_ip = (static_cast<std::uint32_t>(packet[16]) << 24) |\n (static_cast<std::uint32_t>(packet[17]) << 16) |\n (static_cast<std::uint32_t>(packet[18]) << 8) |\n static_cast<std::uint32_t>(packet[19]);\n std::uint16_t total_len = static_cast<std::uint16_t>(\n (static_cast<unsigned int>(packet[2]) << 8) |\n static_cast<unsigned int>(packet[3]));\n LOG_WARN(\"TunDevice::write: {} bytes, IPv4 {}.{}.{}.{} -> {}.{}.{}.{}, \"\n \"IHL={}, proto={}, total_len={}\",\n packet.size(),\n (src_ip >> 24) & 0xFF, (src_ip >> 16) & 0xFF,\n (src_ip >> 8) & 0xFF, src_ip & 0xFF,\n (dst_ip >> 24) & 0xFF, (dst_ip >> 16) & 0xFF,\n (dst_ip >> 8) & 0xFF, dst_ip & 0xFF,\n ihl, protocol, total_len);\n } else if (version == 6) {\n LOG_WARN(\"TunDevice::write: {} bytes, IPv6 packet\", packet.size());\n } else {\n LOG_WARN(\"TunDevice::write: {} bytes, unknown IP version {}, first byte=0x{:02x}\",\n packet.size(), version, packet[0]);\n }\n } else {\n LOG_WARN(\"TunDevice::write: {} bytes (too small for IP header)\", packet.size());\n }\n\n if (packet_info_) {\n // Prepend 4-byte packet info header.\n std::vector<std::uint8_t> buffer(kTunPiSize + packet.size());\n\n // Determine protocol type from packet\n std::uint16_t proto = 0x0800; // Default to ETH_P_IP (IPv4)\n if (packet.size() >= 1) {\n std::uint8_t version = (packet[0] >> 4) & 0x0F;\n if (version == 6) {\n proto = 0x86DD; // ETH_P_IPV6\n }\n }\n\n // Flags = 0, Protocol in network byte order\n buffer[0] = 0;\n buffer[1] = 0;\n buffer[2] = static_cast<std::uint8_t>((proto >> 8) & 0xFF);\n buffer[3] = static_cast<std::uint8_t>(proto & 0xFF);\n std::memcpy(buffer.data() + kTunPiSize, packet.data(), packet.size());\n n = ::write(fd_, buffer.data(), buffer.size());\n if (n < 0 || static_cast<std::size_t>(n) != buffer.size()) {\n ec = last_error();\n stats_.write_errors++;\n LOG_ERROR(\"TunDevice::write: failed to write {} bytes (with PI header): {}\",\n packet.size(), ec.message());\n return false;\n }\n } else {\n n = ::write(fd_, packet.data(), packet.size());\n if (n < 0 || static_cast<std::size_t>(n) != packet.size()) {\n ec = last_error();\n stats_.write_errors++;\n LOG_ERROR(\"TunDevice::write: failed to write {} bytes: {}\", packet.size(), ec.message());\n return false;\n }\n }\n\n stats_.packets_written++;\n stats_.bytes_written += packet.size();\n LOG_WARN(\"TunDevice::write: SUCCESS {} bytes written\", packet.size());\n return true;\n}\n\nbool TunDevice::poll(const ReadHandler& handler, int timeout_ms, std::error_code& ec) {\n const int ep = epoll_create1(0);\n if (ep < 0) {\n ec = last_error();\n return false;\n }\n\n epoll_event ev{};\n ev.events = EPOLLIN;\n ev.data.fd = fd_;\n if (epoll_ctl(ep, EPOLL_CTL_ADD, fd_, &ev) != 0) {\n ec = last_error();\n ::close(ep);\n return false;\n }\n\n std::array<epoll_event, 4> events{};\n const int n = epoll_wait(ep, events.data(), static_cast<int>(events.size()), timeout_ms);\n if (n < 0) {\n ec = last_error();\n ::close(ep);\n return false;\n }\n\n if (n == 0) {\n ::close(ep);\n return true; // Timeout, no data.\n }\n\n for (int i = 0; i < n; ++i) {\n if ((events[static_cast<std::size_t>(i)].events & EPOLLIN) == 0U) {\n continue;\n }\n auto packet = read(ec);\n if (packet && !packet->empty()) {\n handler(*packet);\n }\n }\n\n ::close(ep);\n return true;\n}\n\n} // namespace veil::tun\n", | |
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| "startLine": 1, | |
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| } | |
| [2026-01-28T20:05:33.132Z] [INFO] { | |
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| "text": "Now I can see the issue more clearly. Let me update the todo list and trace this problem." | |
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| [2026-01-28T20:05:36.325Z] [INFO] { | |
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| "content": "Analyze daemon logs for TUN write operations and packet flow", | |
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| "content": "Identify where packets are being lost", | |
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| [2026-01-28T20:05:36.340Z] [INFO] { | |
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| { | |
| "tool_use_id": "toolu_01K8bSvf8SK99A5UKv88Xt6t", | |
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| "content": "Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable" | |
| } | |
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| } | |
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| "content": "Implement fix for the root cause", | |
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| } | |
| ] | |
| } | |
| } | |
| [2026-01-28T20:05:48.905Z] [INFO] { | |
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| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_014wBgKxXiwSyA6DNsJFHt6P", | |
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| "content": [ | |
| { | |
| "type": "text", | |
| "text": "Looking at the logs, I see the pattern clearly now. The problem is:\n\n1. On the server side, 50-byte packets with \"unknown IP version\" are being written to TUN and FAILING\n2. Looking at the pattern in the logs:\n - `TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=1400` - SUCCESS\n - `TunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef` - FAIL\n\nThe `total_len=1400` but only 1350 bytes were in the packet. This indicates the 50-byte packets are the remainder of fragmented IP packets. The total_len of 1400 minus 1350 = 50 bytes - this is the payload size of the next frame!\n\nThis means the data is being split across multiple mux frames, but the second frame's payload has garbage IP headers because it's just payload data, not a complete IP packet.\n\nLet me look at the frame encoding and fragmentation. The issue is likely that the client is sending large IP packets that get fragmented at the mux layer, and then the server is writing each fragment directly to TUN without reassembling them." | |
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| "content": "src/transport/session/transport_session.cpp:76: auto frames = fragment_data(plaintext, stream_id, fin);\nsrc/transport/session/transport_session.cpp:378:std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\nsrc/transport/session/transport_session.cpp:382: if (data.size() <= config_.max_fragment_size) {\nsrc/transport/session/transport_session.cpp:396: const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\nsrc/transport/mux/fragment_reassembly.cpp:12:FragmentReassembly::FragmentReassembly(std::size_t max_bytes,\nsrc/transport/mux/fragment_reassembly.cpp:16:bool FragmentReassembly::push(std::uint64_t message_id, Fragment fragment, TimePoint now) {\nsrc/transport/mux/fragment_reassembly.cpp:34:std::optional<std::vector<std::uint8_t>> FragmentReassembly::try_reassemble(\nsrc/transport/mux/fragment_reassembly.cpp:67:std::size_t FragmentReassembly::cleanup_expired(TimePoint now) {\nsrc/transport/mux/fragment_reassembly.cpp:83:std::size_t FragmentReassembly::memory_usage() const {\ntests/unit/transport_session_tests.cpp:150: config.max_fragment_size = 10; // Very small to force fragmentation\ntests/unit/transport_session_tests.cpp:155: // Create data larger than max_fragment_size.\ntests/unit/fragment_reassembly_tests.cpp:9:TEST(FragmentReassemblyTests, ReassemblesWhenComplete) {\ntests/unit/fragment_reassembly_tests.cpp:10: mux::FragmentReassembly r;\ntests/unit/fragment_reassembly_tests.cpp:18:TEST(FragmentReassemblyTests, RejectsGaps) {\ntests/unit/fragment_reassembly_tests.cpp:19: mux::FragmentReassembly r;\ntests/unit/fragment_reassembly_tests.cpp:26:TEST(FragmentReassemblyTests, RespectsLimit) {\ntests/unit/fragment_reassembly_tests.cpp:27: mux::FragmentReassembly r(2);\ntests/integration/tunnel_integration.cpp:243: config.max_fragment_size = 100; // Small fragments for testing\ntests/integration/transport_integration.cpp:122: config.max_fragment_size = 50; // Small fragments for testing" | |
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| "content": "src/transport/session/transport_session.cpp:76: auto frames = fragment_data(plaintext, stream_id, fin);\nsrc/transport/session/transport_session.cpp:378:std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\nsrc/transport/session/transport_session.cpp:382: if (data.size() <= config_.max_fragment_size) {\nsrc/transport/session/transport_session.cpp:396: const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\nsrc/transport/mux/fragment_reassembly.cpp:12:FragmentReassembly::FragmentReassembly(std::size_t max_bytes,\nsrc/transport/mux/fragment_reassembly.cpp:16:bool FragmentReassembly::push(std::uint64_t message_id, Fragment fragment, TimePoint now) {\nsrc/transport/mux/fragment_reassembly.cpp:34:std::optional<std::vector<std::uint8_t>> FragmentReassembly::try_reassemble(\nsrc/transport/mux/fragment_reassembly.cpp:67:std::size_t FragmentReassembly::cleanup_expired(TimePoint now) {\nsrc/transport/mux/fragment_reassembly.cpp:83:std::size_t FragmentReassembly::memory_usage() const {\ntests/unit/transport_session_tests.cpp:150: config.max_fragment_size = 10; // Very small to force fragmentation\ntests/unit/transport_session_tests.cpp:155: // Create data larger than max_fragment_size.\ntests/unit/fragment_reassembly_tests.cpp:9:TEST(FragmentReassemblyTests, ReassemblesWhenComplete) {\ntests/unit/fragment_reassembly_tests.cpp:10: mux::FragmentReassembly r;\ntests/unit/fragment_reassembly_tests.cpp:18:TEST(FragmentReassemblyTests, RejectsGaps) {\ntests/unit/fragment_reassembly_tests.cpp:19: mux::FragmentReassembly r;\ntests/unit/fragment_reassembly_tests.cpp:26:TEST(FragmentReassemblyTests, RespectsLimit) {\ntests/unit/fragment_reassembly_tests.cpp:27: mux::FragmentReassembly r(2);\ntests/integration/tunnel_integration.cpp:243: config.max_fragment_size = 100; // Small fragments for testing\ntests/integration/transport_integration.cpp:122: config.max_fragment_size = 50; // Small fragments for testing", | |
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| "text": "I see that there's a `FragmentReassembly` class but it's not being used on the receive side! The transport session's `decrypt_packet` function just decodes the mux frame and returns it directly without reassembling fragmented packets.\n\nLet me check the config." | |
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| "content": " 1→#pragma once\n 2→\n 3→#include <chrono>\n 4→#include <cstdint>\n 5→#include <functional>\n 6→#include <memory>\n 7→#include <optional>\n 8→#include <span>\n 9→#include <vector>\n 10→\n 11→#include \"common/crypto/crypto_engine.h\"\n 12→#include \"common/handshake/handshake_processor.h\"\n 13→#include \"common/session/replay_window.h\"\n 14→#include \"common/session/session_rotator.h\"\n 15→#include \"common/utils/thread_checker.h\"\n 16→#include \"transport/mux/ack_bitmap.h\"\n 17→#include \"transport/mux/fragment_reassembly.h\"\n 18→#include \"transport/mux/mux_codec.h\"\n 19→#include \"transport/mux/reorder_buffer.h\"\n 20→#include \"transport/mux/retransmit_buffer.h\"\n 21→\n 22→namespace veil::transport {\n 23→\n 24→// Configuration for transport session behavior.\n 25→struct TransportSessionConfig {\n 26→ // MTU for outgoing packets (excluding IP/UDP overhead).\n 27→ std::size_t mtu{1400};\n 28→ // Maximum fragment size (should be <= mtu - header overhead).\n 29→ std::size_t max_fragment_size{1350};\n 30→ // Replay window size in bits.\n 31→ std::size_t replay_window_size{1024};\n 32→ // Session rotation interval.\n 33→ std::chrono::seconds session_rotation_interval{30};\n 34→ // Packets before forced session rotation.\n 35→ std::uint64_t session_rotation_packets{1000000};\n 36→ // Reorder buffer max bytes.\n 37→ std::size_t reorder_buffer_size{1 << 20};\n 38→ // Fragment reassembly max bytes per message.\n 39→ std::size_t fragment_buffer_size{1 << 20};\n 40→ // Retransmit configuration.\n 41→ mux::RetransmitConfig retransmit_config{};\n 42→};\n 43→\n 44→// Statistics for observability.\n 45→struct TransportStats {\n 46→ std::uint64_t packets_sent{0};\n 47→ std::uint64_t packets_received{0};\n 48→ std::uint64_t bytes_sent{0};\n 49→ std::uint64_t bytes_received{0};\n 50→ std::uint64_t packets_dropped_replay{0};\n 51→ std::uint64_t packets_dropped_decrypt{0};\n 52→ std::uint64_t packets_dropped_late{0};\n 53→ std::uint64_t fragments_sent{0};\n 54→ std::uint64_t fragments_received{0};\n 55→ std::uint64_t messages_reassembled{0};\n 56→ std::uint64_t retransmits{0};\n 57→ std::uint64_t session_rotations{0};\n 58→};\n 59→\n 60→/**\n 61→ * Encrypted transport session built from handshake result.\n 62→ * Handles encryption/decryption, replay protection, fragmentation,\n 63→ * retransmission, and session rotation.\n 64→ *\n 65→ * Thread Safety:\n 66→ * This class is NOT thread-safe. All methods must be called from a single\n 67→ * thread (typically the event loop thread that owns this session).\n 68→ * The session contains internal state (sequence counters, replay window,\n 69→ * retransmit buffer) that is not protected by locks.\n 70→ *\n 71→ * If you need to access the session from multiple threads, external\n 72→ * synchronization is required.\n 73→ *\n 74→ * @see docs/thread_model.md for the VEIL threading model documentation.\n 75→ */\n 76→class TransportSession {\n 77→ public:\n 78→ using Clock = std::chrono::steady_clock;\n 79→ using TimePoint = Clock::time_point;\n 80→\n 81→ // Create a session from a completed handshake.\n 82→ TransportSession(const handshake::HandshakeSession& handshake_session,\n 83→ TransportSessionConfig config = {},\n 84→ std::function<TimePoint()> now_fn = Clock::now);\n 85→\n 86→ /// SECURITY: Destructor clears all session key material\n 87→ ~TransportSession();\n 88→\n 89→ // Disable copy (contains sensitive data)\n 90→ TransportSession(const TransportSession&) = delete;\n 91→ TransportSession& operator=(const TransportSession&) = delete;\n 92→\n 93→ // Enable move\n 94→ TransportSession(TransportSession&&) = default;\n 95→ TransportSession& operator=(TransportSession&&) = default;\n 96→\n 97→ // Encrypt and serialize data for transmission.\n 98→ // Returns encrypted packet bytes ready to send.\n 99→ // If data exceeds MTU, it will be fragmented into multiple packets.\n 100→ std::vector<std::vector<std::uint8_t>> encrypt_data(std::span<const std::uint8_t> plaintext,\n 101→ std::uint64_t stream_id = 0, bool fin = false);\n 102→\n 103→ // Encrypt a pre-constructed frame (e.g., ACK, control, heartbeat frames).\n 104→ // Unlike encrypt_data() which wraps plaintext in DATA frames, this method\n 105→ // encrypts the frame as-is, preserving its original frame kind.\n 106→ // Returns a single encrypted packet.\n 107→ std::vector<std::uint8_t> encrypt_frame(const mux::MuxFrame& frame);\n 108→\n 109→ // Decrypt and process a received packet.\n 110→ // Returns decrypted mux frames if successful.\n 111→ // Performs replay check and decryption.\n 112→ std::optional<std::vector<mux::MuxFrame>> decrypt_packet(std::span<const std::uint8_t> ciphertext);\n 113→\n 114→ // Get packets that need retransmission.\n 115→ std::vector<std::vector<std::uint8_t>> get_retransmit_packets();\n 116→\n 117→ // Process an ACK frame (acknowledges sent packets).\n 118→ void process_ack(const mux::AckFrame& ack);\n 119→\n 120→ // Generate an ACK frame for received packets on a stream.\n 121→ mux::AckFrame generate_ack(std::uint64_t stream_id);\n 122→\n 123→ // Check if session should rotate (time or packet count threshold).\n 124→ bool should_rotate_session();\n 125→\n 126→ /// Perform session rotation.\n 127→ /// IMPORTANT: This ONLY rotates the session_id for protocol-level management.\n 128→ /// The send_sequence_ counter is NOT reset - it continues monotonically.\n 129→ /// This is critical for nonce uniqueness: nonce = derive_nonce(base_nonce, send_sequence_).\n 130→ /// See Issue #3 for detailed security analysis.\n 131→ void rotate_session();\n 132→\n 133→ // Get current session ID.\n 134→ std::uint64_t session_id() const { return current_session_id_; }\n 135→\n 136→ // Get current send sequence number.\n 137→ std::uint64_t send_sequence() const { return send_sequence_; }\n 138→\n 139→ // Get statistics.\n 140→ const TransportStats& stats() const { return stats_; }\n 141→\n 142→ // Get retransmit buffer statistics.\n 143→ const mux::RetransmitStats& retransmit_stats() const { return retransmit_buffer_.stats(); }\n 144→\n 145→ private:\n 146→ // Build an encrypted packet from mux frame.\n 147→ std::vector<std::uint8_t> build_encrypted_packet(const mux::MuxFrame& frame);\n 148→\n 149→ // Fragment large data into multiple frames.\n 150→ std::vector<mux::MuxFrame> fragment_data(std::span<const std::uint8_t> data, std::uint64_t stream_id,\n 151→ bool fin);\n 152→\n 153→ TransportSessionConfig config_;\n 154→ std::function<TimePoint()> now_fn_;\n 155→\n 156→ // Crypto keys from handshake.\n 157→ crypto::SessionKeys keys_;\n 158→ std::uint64_t current_session_id_;\n 159→\n 160→ // DPI resistance: Keys for obfuscating sequence numbers (Issue #21).\n 161→ // These are derived from session keys to prevent traffic analysis.\n 162→ std::array<std::uint8_t, crypto::kAeadKeyLen> send_seq_obfuscation_key_;\n 163→ std::array<std::uint8_t, crypto::kAeadKeyLen> recv_seq_obfuscation_key_;\n 164→\n 165→ // Sequence counters.\n 166→ // SECURITY-CRITICAL: send_sequence_ is used for nonce derivation.\n 167→ // It MUST NEVER be reset - it continues monotonically across session rotations.\n 168→ // nonce = derive_nonce(base_nonce, send_sequence_)\n 169→ // Resetting would cause nonce reuse, completely breaking ChaCha20-Poly1305 security.\n 170→ std::uint64_t send_sequence_{0};\n 171→ std::uint64_t recv_sequence_max_{0};\n 172→\n 173→ // Replay protection.\n 174→ session::ReplayWindow replay_window_;\n 175→\n 176→ // Session rotation.\n 177→ session::SessionRotator session_rotator_;\n 178→ std::uint64_t packets_since_rotation_{0};\n 179→\n 180→ // Multiplexing state.\n 181→ mux::AckBitmap recv_ack_bitmap_;\n 182→ mux::ReorderBuffer reorder_buffer_;\n 183→ mux::FragmentReassembly fragment_reassembly_;\n 184→ mux::RetransmitBuffer retransmit_buffer_;\n 185→\n 186→ // Message ID counter for fragmentation.\n 187→ std::uint64_t message_id_counter_{0};\n 188→\n 189→ // Statistics.\n 190→ TransportStats stats_;\n 191→\n 192→ // Thread safety: verifies single-threaded access in debug builds.\n 193→ VEIL_THREAD_CHECKER(thread_checker_);\n 194→};\n 195→\n 196→} // namespace veil::transport\n 197→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": "#pragma once\n\n#include <chrono>\n#include <cstdint>\n#include <functional>\n#include <memory>\n#include <optional>\n#include <span>\n#include <vector>\n\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/handshake/handshake_processor.h\"\n#include \"common/session/replay_window.h\"\n#include \"common/session/session_rotator.h\"\n#include \"common/utils/thread_checker.h\"\n#include \"transport/mux/ack_bitmap.h\"\n#include \"transport/mux/fragment_reassembly.h\"\n#include \"transport/mux/mux_codec.h\"\n#include \"transport/mux/reorder_buffer.h\"\n#include \"transport/mux/retransmit_buffer.h\"\n\nnamespace veil::transport {\n\n// Configuration for transport session behavior.\nstruct TransportSessionConfig {\n // MTU for outgoing packets (excluding IP/UDP overhead).\n std::size_t mtu{1400};\n // Maximum fragment size (should be <= mtu - header overhead).\n std::size_t max_fragment_size{1350};\n // Replay window size in bits.\n std::size_t replay_window_size{1024};\n // Session rotation interval.\n std::chrono::seconds session_rotation_interval{30};\n // Packets before forced session rotation.\n std::uint64_t session_rotation_packets{1000000};\n // Reorder buffer max bytes.\n std::size_t reorder_buffer_size{1 << 20};\n // Fragment reassembly max bytes per message.\n std::size_t fragment_buffer_size{1 << 20};\n // Retransmit configuration.\n mux::RetransmitConfig retransmit_config{};\n};\n\n// Statistics for observability.\nstruct TransportStats {\n std::uint64_t packets_sent{0};\n std::uint64_t packets_received{0};\n std::uint64_t bytes_sent{0};\n std::uint64_t bytes_received{0};\n std::uint64_t packets_dropped_replay{0};\n std::uint64_t packets_dropped_decrypt{0};\n std::uint64_t packets_dropped_late{0};\n std::uint64_t fragments_sent{0};\n std::uint64_t fragments_received{0};\n std::uint64_t messages_reassembled{0};\n std::uint64_t retransmits{0};\n std::uint64_t session_rotations{0};\n};\n\n/**\n * Encrypted transport session built from handshake result.\n * Handles encryption/decryption, replay protection, fragmentation,\n * retransmission, and session rotation.\n *\n * Thread Safety:\n * This class is NOT thread-safe. All methods must be called from a single\n * thread (typically the event loop thread that owns this session).\n * The session contains internal state (sequence counters, replay window,\n * retransmit buffer) that is not protected by locks.\n *\n * If you need to access the session from multiple threads, external\n * synchronization is required.\n *\n * @see docs/thread_model.md for the VEIL threading model documentation.\n */\nclass TransportSession {\n public:\n using Clock = std::chrono::steady_clock;\n using TimePoint = Clock::time_point;\n\n // Create a session from a completed handshake.\n TransportSession(const handshake::HandshakeSession& handshake_session,\n TransportSessionConfig config = {},\n std::function<TimePoint()> now_fn = Clock::now);\n\n /// SECURITY: Destructor clears all session key material\n ~TransportSession();\n\n // Disable copy (contains sensitive data)\n TransportSession(const TransportSession&) = delete;\n TransportSession& operator=(const TransportSession&) = delete;\n\n // Enable move\n TransportSession(TransportSession&&) = default;\n TransportSession& operator=(TransportSession&&) = default;\n\n // Encrypt and serialize data for transmission.\n // Returns encrypted packet bytes ready to send.\n // If data exceeds MTU, it will be fragmented into multiple packets.\n std::vector<std::vector<std::uint8_t>> encrypt_data(std::span<const std::uint8_t> plaintext,\n std::uint64_t stream_id = 0, bool fin = false);\n\n // Encrypt a pre-constructed frame (e.g., ACK, control, heartbeat frames).\n // Unlike encrypt_data() which wraps plaintext in DATA frames, this method\n // encrypts the frame as-is, preserving its original frame kind.\n // Returns a single encrypted packet.\n std::vector<std::uint8_t> encrypt_frame(const mux::MuxFrame& frame);\n\n // Decrypt and process a received packet.\n // Returns decrypted mux frames if successful.\n // Performs replay check and decryption.\n std::optional<std::vector<mux::MuxFrame>> decrypt_packet(std::span<const std::uint8_t> ciphertext);\n\n // Get packets that need retransmission.\n std::vector<std::vector<std::uint8_t>> get_retransmit_packets();\n\n // Process an ACK frame (acknowledges sent packets).\n void process_ack(const mux::AckFrame& ack);\n\n // Generate an ACK frame for received packets on a stream.\n mux::AckFrame generate_ack(std::uint64_t stream_id);\n\n // Check if session should rotate (time or packet count threshold).\n bool should_rotate_session();\n\n /// Perform session rotation.\n /// IMPORTANT: This ONLY rotates the session_id for protocol-level management.\n /// The send_sequence_ counter is NOT reset - it continues monotonically.\n /// This is critical for nonce uniqueness: nonce = derive_nonce(base_nonce, send_sequence_).\n /// See Issue #3 for detailed security analysis.\n void rotate_session();\n\n // Get current session ID.\n std::uint64_t session_id() const { return current_session_id_; }\n\n // Get current send sequence number.\n std::uint64_t send_sequence() const { return send_sequence_; }\n\n // Get statistics.\n const TransportStats& stats() const { return stats_; }\n\n // Get retransmit buffer statistics.\n const mux::RetransmitStats& retransmit_stats() const { return retransmit_buffer_.stats(); }\n\n private:\n // Build an encrypted packet from mux frame.\n std::vector<std::uint8_t> build_encrypted_packet(const mux::MuxFrame& frame);\n\n // Fragment large data into multiple frames.\n std::vector<mux::MuxFrame> fragment_data(std::span<const std::uint8_t> data, std::uint64_t stream_id,\n bool fin);\n\n TransportSessionConfig config_;\n std::function<TimePoint()> now_fn_;\n\n // Crypto keys from handshake.\n crypto::SessionKeys keys_;\n std::uint64_t current_session_id_;\n\n // DPI resistance: Keys for obfuscating sequence numbers (Issue #21).\n // These are derived from session keys to prevent traffic analysis.\n std::array<std::uint8_t, crypto::kAeadKeyLen> send_seq_obfuscation_key_;\n std::array<std::uint8_t, crypto::kAeadKeyLen> recv_seq_obfuscation_key_;\n\n // Sequence counters.\n // SECURITY-CRITICAL: send_sequence_ is used for nonce derivation.\n // It MUST NEVER be reset - it continues monotonically across session rotations.\n // nonce = derive_nonce(base_nonce, send_sequence_)\n // Resetting would cause nonce reuse, completely breaking ChaCha20-Poly1305 security.\n std::uint64_t send_sequence_{0};\n std::uint64_t recv_sequence_max_{0};\n\n // Replay protection.\n session::ReplayWindow replay_window_;\n\n // Session rotation.\n session::SessionRotator session_rotator_;\n std::uint64_t packets_since_rotation_{0};\n\n // Multiplexing state.\n mux::AckBitmap recv_ack_bitmap_;\n mux::ReorderBuffer reorder_buffer_;\n mux::FragmentReassembly fragment_reassembly_;\n mux::RetransmitBuffer retransmit_buffer_;\n\n // Message ID counter for fragmentation.\n std::uint64_t message_id_counter_{0};\n\n // Statistics.\n TransportStats stats_;\n\n // Thread safety: verifies single-threaded access in debug builds.\n VEIL_THREAD_CHECKER(thread_checker_);\n};\n\n} // namespace veil::transport\n", | |
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| "text": "I see that `FragmentReassembly` is part of the TransportSession class (line 183), but looking at `decrypt_packet` in transport_session.cpp:191, it decodes the frame but doesn't use the fragment reassembly to reassemble the fragmented data before returning!\n\nThe problem is that:\n1. When sending large packets, `encrypt_data` calls `fragment_data` which splits data into multiple frames\n2. Each fragment is sent as a separate encrypted packet\n3. On receive, `decrypt_packet` decodes each frame separately and returns it\n4. The receiving code in `tunnel.cpp` and `server/main.cpp` writes each fragment directly to TUN\n5. But fragments are NOT complete IP packets - they're just chunks of the original large IP packet\n\nThe fix should be to use the `fragment_reassembly_` member in the `decrypt_packet` function to reassemble fragments before returning them.\n\nLet me check how `fragment_data` encodes the fragments.\n\nLooking at lines 404-406 of transport_session.cpp:\n```cpp\n// For fragmented messages, we use a special encoding in the sequence field.\n// High 32 bits: message ID, Low 32 bits: fragment index.\nconst std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n```\n\nAnd the `fin` flag indicates the last fragment. Now let me look at the `FragmentReassembly` class to understand how it should work." | |
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| "content": " 1→#include \"transport/mux/fragment_reassembly.h\"\n 2→\n 3→#include <algorithm>\n 4→#include <chrono>\n 5→#include <cstdint>\n 6→#include <map>\n 7→#include <optional>\n 8→#include <vector>\n 9→\n 10→namespace veil::mux {\n 11→\n 12→FragmentReassembly::FragmentReassembly(std::size_t max_bytes,\n 13→ std::chrono::milliseconds fragment_timeout)\n 14→ : max_bytes_(max_bytes), fragment_timeout_(fragment_timeout) {}\n 15→\n 16→bool FragmentReassembly::push(std::uint64_t message_id, Fragment fragment, TimePoint now) {\n 17→ auto& entry = state_[message_id];\n 18→\n 19→ // Record timestamp of first fragment for this message\n 20→ if (entry.fragments.empty()) {\n 21→ entry.first_fragment_time = now;\n 22→ }\n 23→\n 24→ if (entry.total_bytes + fragment.data.size() > max_bytes_) {\n 25→ return false;\n 26→ }\n 27→\n 28→ entry.total_bytes += fragment.data.size();\n 29→ entry.has_last = entry.has_last || fragment.last;\n 30→ entry.fragments.push_back(std::move(fragment));\n 31→ return true;\n 32→}\n 33→\n 34→std::optional<std::vector<std::uint8_t>> FragmentReassembly::try_reassemble(\n 35→ std::uint64_t message_id) {\n 36→ auto it = state_.find(message_id);\n 37→ if (it == state_.end()) {\n 38→ return std::nullopt;\n 39→ }\n 40→ auto& entry = it->second;\n 41→ if (!entry.has_last) {\n 42→ return std::nullopt;\n 43→ }\n 44→\n 45→ std::sort(entry.fragments.begin(), entry.fragments.end(),\n 46→ [](const Fragment& a, const Fragment& b) { return a.offset < b.offset; });\n 47→\n 48→ std::size_t assembled = 0;\n 49→ std::size_t expected_offset = 0;\n 50→ for (const auto& frag : entry.fragments) {\n 51→ if (frag.offset != expected_offset) {\n 52→ return std::nullopt;\n 53→ }\n 54→ assembled += frag.data.size();\n 55→ expected_offset += frag.data.size();\n 56→ }\n 57→\n 58→ std::vector<std::uint8_t> output;\n 59→ output.reserve(assembled);\n 60→ for (const auto& frag : entry.fragments) {\n 61→ output.insert(output.end(), frag.data.begin(), frag.data.end());\n 62→ }\n 63→ state_.erase(it);\n 64→ return output;\n 65→}\n 66→\n 67→std::size_t FragmentReassembly::cleanup_expired(TimePoint now) {\n 68→ std::size_t removed = 0;\n 69→\n 70→ for (auto it = state_.begin(); it != state_.end();) {\n 71→ const auto age = now - it->second.first_fragment_time;\n 72→ if (age > fragment_timeout_) {\n 73→ it = state_.erase(it);\n 74→ ++removed;\n 75→ } else {\n 76→ ++it;\n 77→ }\n 78→ }\n 79→\n 80→ return removed;\n 81→}\n 82→\n 83→std::size_t FragmentReassembly::memory_usage() const {\n 84→ std::size_t total = 0;\n 85→ for (const auto& [_, state] : state_) {\n 86→ total += state.total_bytes;\n 87→ }\n 88→ return total;\n 89→}\n 90→\n 91→} // namespace veil::mux\n 92→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": "#include \"transport/mux/fragment_reassembly.h\"\n\n#include <algorithm>\n#include <chrono>\n#include <cstdint>\n#include <map>\n#include <optional>\n#include <vector>\n\nnamespace veil::mux {\n\nFragmentReassembly::FragmentReassembly(std::size_t max_bytes,\n std::chrono::milliseconds fragment_timeout)\n : max_bytes_(max_bytes), fragment_timeout_(fragment_timeout) {}\n\nbool FragmentReassembly::push(std::uint64_t message_id, Fragment fragment, TimePoint now) {\n auto& entry = state_[message_id];\n\n // Record timestamp of first fragment for this message\n if (entry.fragments.empty()) {\n entry.first_fragment_time = now;\n }\n\n if (entry.total_bytes + fragment.data.size() > max_bytes_) {\n return false;\n }\n\n entry.total_bytes += fragment.data.size();\n entry.has_last = entry.has_last || fragment.last;\n entry.fragments.push_back(std::move(fragment));\n return true;\n}\n\nstd::optional<std::vector<std::uint8_t>> FragmentReassembly::try_reassemble(\n std::uint64_t message_id) {\n auto it = state_.find(message_id);\n if (it == state_.end()) {\n return std::nullopt;\n }\n auto& entry = it->second;\n if (!entry.has_last) {\n return std::nullopt;\n }\n\n std::sort(entry.fragments.begin(), entry.fragments.end(),\n [](const Fragment& a, const Fragment& b) { return a.offset < b.offset; });\n\n std::size_t assembled = 0;\n std::size_t expected_offset = 0;\n for (const auto& frag : entry.fragments) {\n if (frag.offset != expected_offset) {\n return std::nullopt;\n }\n assembled += frag.data.size();\n expected_offset += frag.data.size();\n }\n\n std::vector<std::uint8_t> output;\n output.reserve(assembled);\n for (const auto& frag : entry.fragments) {\n output.insert(output.end(), frag.data.begin(), frag.data.end());\n }\n state_.erase(it);\n return output;\n}\n\nstd::size_t FragmentReassembly::cleanup_expired(TimePoint now) {\n std::size_t removed = 0;\n\n for (auto it = state_.begin(); it != state_.end();) {\n const auto age = now - it->second.first_fragment_time;\n if (age > fragment_timeout_) {\n it = state_.erase(it);\n ++removed;\n } else {\n ++it;\n }\n }\n\n return removed;\n}\n\nstd::size_t FragmentReassembly::memory_usage() const {\n std::size_t total = 0;\n for (const auto& [_, state] : state_) {\n total += state.total_bytes;\n }\n return total;\n}\n\n} // namespace veil::mux\n", | |
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| "text": "Now I need to look at the Fragment struct." | |
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| "content": " 1→#pragma once\n 2→\n 3→#include <chrono>\n 4→#include <cstdint>\n 5→#include <map>\n 6→#include <optional>\n 7→#include <vector>\n 8→\n 9→namespace veil::mux {\n 10→\n 11→struct Fragment {\n 12→ std::uint16_t offset{0};\n 13→ std::vector<std::uint8_t> data;\n 14→ bool last{false};\n 15→};\n 16→\n 17→class FragmentReassembly {\n 18→ public:\n 19→ using Clock = std::chrono::steady_clock;\n 20→ using TimePoint = Clock::time_point;\n 21→\n 22→ explicit FragmentReassembly(std::size_t max_bytes = 1 << 20,\n 23→ std::chrono::milliseconds fragment_timeout =\n 24→ std::chrono::milliseconds(5000));\n 25→\n 26→ bool push(std::uint64_t message_id, Fragment fragment,\n 27→ TimePoint now = Clock::now());\n 28→\n 29→ std::optional<std::vector<std::uint8_t>> try_reassemble(std::uint64_t message_id);\n 30→\n 31→ // Remove fragments that have exceeded the timeout.\n 32→ // Returns number of incomplete messages dropped.\n 33→ std::size_t cleanup_expired(TimePoint now = Clock::now());\n 34→\n 35→ // Get number of incomplete messages currently buffered.\n 36→ [[nodiscard]] std::size_t pending_count() const { return state_.size(); }\n 37→\n 38→ // Get total memory used by incomplete fragments.\n 39→ [[nodiscard]] std::size_t memory_usage() const;\n 40→\n 41→ private:\n 42→ struct State {\n 43→ std::vector<Fragment> fragments;\n 44→ std::size_t total_bytes{0};\n 45→ bool has_last{false};\n 46→ TimePoint first_fragment_time{};\n 47→ };\n 48→\n 49→ std::size_t max_bytes_;\n 50→ std::chrono::milliseconds fragment_timeout_;\n 51→ std::map<std::uint64_t, State> state_;\n 52→};\n 53→\n 54→} // namespace veil::mux\n 55→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": "#pragma once\n\n#include <chrono>\n#include <cstdint>\n#include <map>\n#include <optional>\n#include <vector>\n\nnamespace veil::mux {\n\nstruct Fragment {\n std::uint16_t offset{0};\n std::vector<std::uint8_t> data;\n bool last{false};\n};\n\nclass FragmentReassembly {\n public:\n using Clock = std::chrono::steady_clock;\n using TimePoint = Clock::time_point;\n\n explicit FragmentReassembly(std::size_t max_bytes = 1 << 20,\n std::chrono::milliseconds fragment_timeout =\n std::chrono::milliseconds(5000));\n\n bool push(std::uint64_t message_id, Fragment fragment,\n TimePoint now = Clock::now());\n\n std::optional<std::vector<std::uint8_t>> try_reassemble(std::uint64_t message_id);\n\n // Remove fragments that have exceeded the timeout.\n // Returns number of incomplete messages dropped.\n std::size_t cleanup_expired(TimePoint now = Clock::now());\n\n // Get number of incomplete messages currently buffered.\n [[nodiscard]] std::size_t pending_count() const { return state_.size(); }\n\n // Get total memory used by incomplete fragments.\n [[nodiscard]] std::size_t memory_usage() const;\n\n private:\n struct State {\n std::vector<Fragment> fragments;\n std::size_t total_bytes{0};\n bool has_last{false};\n TimePoint first_fragment_time{};\n };\n\n std::size_t max_bytes_;\n std::chrono::milliseconds fragment_timeout_;\n std::map<std::uint64_t, State> state_;\n};\n\n} // namespace veil::mux\n", | |
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| [2026-01-28T20:06:47.202Z] [INFO] { | |
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| "text": "Now I understand the problem clearly. The `fragment_data` function (transport_session.cpp:378-414) fragments large IP packets into multiple mux frames, encoding the message_id in the high 32 bits and fragment_seq in the low 32 bits of the sequence field. The `fin` flag marks the last fragment.\n\nHowever, on the receive side (`decrypt_packet`), the code:\n1. Decrypts the packet and decodes the mux frame\n2. Returns the frame directly without reassembling fragments\n\nThis means when a large IP packet (like 1400 bytes) is sent:\n1. It gets split into a 1350-byte fragment and a 50-byte fragment\n2. Each fragment is encrypted and sent as a separate UDP packet\n3. On receive, each is decrypted and returned as a separate frame\n4. The tunnel code writes each fragment to TUN as if it were a complete IP packet\n5. The 50-byte fragment has garbage at the start (it's mid-stream data, not a valid IP header)\n\nThe fix needs to use `fragment_reassembly_` in `decrypt_packet` to reassemble fragments before returning them.\n\nLet me look more closely at how the fragmentation works. Looking at fragment_data, when there's no fragmentation (single frame):\n```cpp\nif (data.size() <= config_.max_fragment_size) {\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n}\n```\n\nAnd when fragmented:\n```cpp\nconst std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\nframes.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n```\n\nThe issue is that for non-fragmented packets, `sequence` is `message_id_counter_++`, but for fragmented packets, `sequence` is `(msg_id << 32) | frag_seq`. The receiver needs to detect this difference.\n\nActually wait, I need to re-read this more carefully. Looking at `fragment_data`:\n\n1. For non-fragmented data: `sequence = message_id_counter_++` (a plain counter)\n2. For fragmented data: `sequence = (msg_id << 32) | frag_seq` where `msg_id = message_id_counter_++` before the loop\n\nSo for fragmented messages, the high 32 bits contain message_id and low 32 bits contain fragment index (0, 1, 2, ...).\n\nThe receiver can detect fragmentation by checking if the low 32 bits are non-zero OR if `fin` is false but low 32 bits are 0 (first fragment of multi-fragment message).\n\nActually, looking more closely, the issue is simpler. Let me check if there's actually fragmentation happening. Let me look at the logs again.\n\nLooking at the server logs:\n- `TunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 8.47.69.10, IHL=5, proto=6, total_len=1400` - SUCCESS\n\nThe `total_len=1400` in the IP header but only 1350 bytes in the payload. This is a valid but fragmented IP packet (IP layer fragmentation at the OS level, not mux layer fragmentation).\n\nWait, but then the 50-byte packets would need to have valid IP fragmentation headers... Let me think about this more.\n\nActually, looking at the daemon logs again:\n```\nTunDevice::write: 1350 bytes, IPv4 4.207.247.137 -> 10.8.0.2, IHL=5, proto=6, total_len=1400\nTunDevice::write: SUCCESS 1350 bytes sent to Wintun\nTunDevice::write: 50 bytes, IP version 6 (not IPv4), first byte=0x6f\nTunDevice::write: SUCCESS 50 bytes sent to Wintun\n```\n\nThe 50-byte \"packet\" has first byte 0x6f which means IP version 6 (0x6 in high nibble). But 0x6f is not a valid IPv6 packet start either (IPv6 always starts with 0x60). This 50-byte chunk is clearly NOT a valid IP packet - it's fragment data.\n\nSo the mux layer IS fragmenting the data. Let me trace exactly where this happens.\n\nLooking at `encrypt_data`:\n```cpp\nauto frames = fragment_data(plaintext, stream_id, fin);\nfor (auto& frame : frames) {\n auto encrypted = build_encrypted_packet(frame);\n ...\n}\n```\n\nAnd in `fragment_data`:\n```cpp\nif (data.size() <= config_.max_fragment_size) { // 1350 bytes by default\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(...));\n return frames;\n}\n// Fragment the data...\n```\n\nSo if the original IP packet is 1400 bytes, it exceeds the 1350-byte max_fragment_size and gets fragmented into two frames: 1350 bytes + 50 bytes.\n\nNow looking at `decrypt_packet`:\n```cpp\nauto frame = mux::MuxCodec::decode(*decrypted);\nif (frame) {\n frames.push_back(std::move(*frame));\n ...\n}\nreturn frames;\n```\n\nThe frame is returned directly without reassembly! The `fragment_reassembly_` member is never used.\n\nNow I understand the root cause. The fix is to:\n1. Detect if a data frame is a fragment (check if sequence has fragment info OR if it's not the last packet)\n2. If fragmented, use `fragment_reassembly_` to accumulate fragments\n3. Only return the complete reassembled data when all fragments are received\n\nLet me implement this fix." | |
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| [2026-01-28T20:06:50.969Z] [INFO] { | |
| "type": "assistant", | |
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| { | |
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| "id": "toolu_01QhFkmf79FbDBWZkRJ5Mx7f", | |
| "name": "TodoWrite", | |
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| { | |
| "content": "Analyze daemon logs for TUN write operations and packet flow", | |
| "status": "completed", | |
| "activeForm": "Analyzing daemon logs for TUN write operations" | |
| }, | |
| { | |
| "content": "Analyze server logs for packet routing", | |
| "status": "completed", | |
| "activeForm": "Analyzing server logs for packet routing" | |
| }, | |
| { | |
| "content": "Identify where packets are being lost", | |
| "status": "completed", | |
| "activeForm": "Identifying packet loss location" | |
| }, | |
| { | |
| "content": "Implement fix for fragment reassembly in decrypt_packet", | |
| "status": "in_progress", | |
| "activeForm": "Implementing fragment reassembly fix" | |
| }, | |
| { | |
| "content": "Run local CI checks before committing", | |
| "status": "pending", | |
| "activeForm": "Running local CI checks" | |
| }, | |
| { | |
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| "text": "Now let me implement the fix. I need to modify `decrypt_packet` in `transport_session.cpp` to use `fragment_reassembly_` for reassembling fragmented data frames.\n\nLooking at how fragments are encoded:\n- For non-fragmented: `sequence = message_id_counter_++` (plain counter, low 32 bits can be anything)\n- For fragmented: `sequence = (msg_id << 32) | frag_seq` where frag_seq is 0, 1, 2, ...\n\nThe challenge is distinguishing between:\n1. Non-fragmented packet with sequence N\n2. First fragment of message ID M (sequence = M << 32 | 0)\n\nLooking more carefully, I see that for non-fragmented packets, the sequence is just the message_id_counter which could be 0, 1, 2, etc. For fragmented packets, the sequence has message_id in high 32 bits.\n\nThe key insight is that non-fragmented packets always have `fin=true`, while fragmented packets only have `fin=true` on the last fragment. So:\n- If `fin=true` and this is the first/only frame with this message_id, it's non-fragmented\n- If `fin=false`, it's a fragment of a larger message\n\nActually, looking at the code again:\n\n```cpp\n// For non-fragmented:\nframes.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin, // fin comes from the original parameter\n ...));\n```\n\nSo even non-fragmented packets could have `fin=false` if the caller passed `fin=false`. This means we can't distinguish purely by `fin`.\n\nLet me look at how the caller uses it:\n- In `on_tun_packet` in tunnel.cpp: `session_->encrypt_data(packet)` - no fin parameter, defaults to false\n- Looking at the signature: `encrypt_data(std::span<const std::uint8_t> plaintext, std::uint64_t stream_id = 0, bool fin = false)`\n\nSo `fin` defaults to `false`, meaning ALL packets are sent with `fin=false`, which makes it impossible to distinguish fragments from non-fragments using the current protocol!\n\nWait, let me re-read the fragmentation code:\n\n```cpp\nwhile (offset < data.size()) {\n const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin; // fin is only set on last fragment if caller set fin=true\n ...\n}\n```\n\nSo if caller passes `fin=false` (the default), then:\n- All fragments have `fin=false`\n- A non-fragmented packet also has `fin=false`\n\nThis is a design issue. But actually, looking at the server logs, we can see packets are being written and the mux codec is working. Let me check if the issue is simpler - maybe the fragment encoding/decoding already handles this correctly through the sequence field.\n\nLooking at fragment_data again:\n```cpp\n// For fragmented messages, we use a special encoding in the sequence field.\n// High 32 bits: message ID, Low 32 bits: fragment index.\nconst std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n```\n\nFor fragment index 0: sequence = msg_id << 32 | 0 = msg_id * 2^32\nFor fragment index 1: sequence = msg_id << 32 | 1 = msg_id * 2^32 + 1\n\nSo if message_id_counter is small (say 5), and we're fragmenting:\n- Fragment 0: sequence = 5 << 32 | 0 = 21474836480 (a very large number)\n- Fragment 1: sequence = 5 << 32 | 1 = 21474836481\n\nFor a non-fragmented packet with message_id_counter=6:\n- sequence = 6 (a small number)\n\nSo we CAN distinguish fragments: if sequence >= 2^32, it's a fragment. If sequence < 2^32, it's non-fragmented.\n\nActually wait, that's not quite right either. If message_id_counter starts at 0, then:\n- Non-fragmented with msg_id=0: sequence = 0\n- Fragment 0 of msg_id=0: sequence = 0 << 32 | 0 = 0\n\nThese are the same! Let me look more carefully...\n\nActually in fragment_data:\n```cpp\n// Fragment the data.\nconst std::uint64_t msg_id = message_id_counter_++; // msg_id is incremented here\n...\nconst std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n```\n\nAnd for non-fragmented:\n```cpp\nframes.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin, // message_id_counter is incremented here\n ...));\n```\n\nSo both use and increment `message_id_counter_`. The difference is just the encoding.\n\nFor non-fragmented: sequence = message_id_counter\nFor fragmented: sequence = (message_id_counter << 32) | frag_index\n\nSo if message_id_counter is 5:\n- Non-fragmented: sequence = 5\n- Fragmented (first): sequence = 5 << 32 | 0 = 21474836480\n\nThese are distinguishable by whether the high 32 bits are zero (non-fragmented) or non-zero (could be fragmented).\n\nWait, that's still not right. If message_id is 0:\n- Non-fragmented with msg_id=0: sequence = 0\n- Fragmented msg_id=0, frag_idx=0: sequence = 0 << 32 | 0 = 0\n\nThese are the same! But the difference is that fragmented packets always have at least 2 fragments, so:\n- For non-fragmented msg_id=0: sequence=0, fin=false (or true)\n- For fragmented msg_id=0, frag_idx=0: sequence=0, fin=false\n- For fragmented msg_id=0, frag_idx=1: sequence=0<<32|1=1, fin=true (if 2 fragments)\n\nHmm, still ambiguous. Let me think about this differently.\n\nActually, looking at the FragmentReassembly class, it expects `Fragment` with an `offset` field. But the current encoding puts fragment_index in the low 32 bits, not offset. And there's no way to calculate offset from fragment_index without knowing fragment sizes.\n\nLet me look at how Fragment is supposed to be used:\n```cpp\nstruct Fragment {\n std::uint16_t offset{0}; // Offset from start of original message\n std::vector<std::uint8_t> data;\n bool last{false};\n};\n```\n\nThe offset is in bytes from the start. But the sender doesn't encode this - it just uses fragment index.\n\nI think the FragmentReassembly class was designed but never properly integrated with the transport session. The current design has a mismatch.\n\nLet me look at what information we have in the received frame:\n```cpp\nframe.data.stream_id // stream identifier\nframe.data.sequence // encoded as msg_id << 32 | frag_index OR just msg_id for non-fragmented\nframe.data.fin // true if this is the last fragment (and caller passed fin=true)\nframe.data.payload // the actual data\n```\n\nGiven these constraints, I think the simplest fix is:\n\n1. Check if sequence has fragment info: `frag_index = sequence & 0xFFFFFFFF`, `msg_id = sequence >> 32`\n2. If `msg_id != 0` (meaning sequence > 2^32), OR if `msg_id == 0 && frag_index == 0` and we later receive `frag_index > 0` with the same message scope...\n\nThis is getting complicated. Let me think about this differently.\n\nThe real issue is that the current implementation doesn't use fragment reassembly at all. Looking at the test:\n```cpp\n// From tests/unit/transport_session_tests.cpp\nconfig.max_fragment_size = 10; // Very small to force fragmentation\n...\n// Create data larger than max_fragment_size.\n```\n\nLet me check if there's a simpler pattern by looking at how the receiver should work.\n\nActually, wait. Let me re-read the logs more carefully to understand what's happening.\n\nFrom server logs:\n```\nFrame decoded: kind=1, payload_size=1350\n...\nTunDevice::write: 1350 bytes, IPv4 10.8.0.2 -> 199.232.175.82, IHL=5, proto=6, total_len=1400\nTunDevice::write: SUCCESS 1350 bytes written\n```\n\nAnd then immediately:\n```\nFrame decoded: kind=1, payload_size=50\n...\nTunDevice::write: 50 bytes, unknown IP version 14, first byte=0xef\nTunDevice::write: failed to write 50 bytes: Invalid argument\n```\n\nSo the 1350-byte frame has a valid IPv4 header with total_len=1400, meaning the full IP packet should be 1400 bytes. But we're only getting 1350 bytes in this frame.\n\nThe 50-byte frame has garbage at the start (first byte 0xef = IP version 14, invalid).\n\nThis confirms that the mux layer is fragmenting the 1400-byte IP packet into 1350+50 bytes, and the receiver is writing each fragment separately to TUN.\n\nNow, looking at the IP header in the 1350-byte fragment - it has total_len=1400. This is the IP layer's total length field, which indicates the full original packet size. The receiver should NOT write this to TUN directly because:\n1. It's only 1350 bytes but claims to be 1400 bytes\n2. The remaining 50 bytes are in the next fragment\n\nSo the fix should be:\n1. Detect mux-layer fragmentation (sequence encoding shows it's a fragment)\n2. Reassemble fragments before writing to TUN\n3. Write the complete reassembled packet (1400 bytes in this case)\n\nBut the question is: how do we detect mux-layer fragments? The current design is flawed because:\n- Non-fragmented: sequence = msg_id\n- Fragmented: sequence = (msg_id << 32) | frag_idx\n\nWhen msg_id=0 and frag_idx=0, both give sequence=0.\n\nLet me check if there's a simpler approach: what if we just always try to reassemble based on the sequence encoding, and for non-fragmented packets (where high bits are 0), we just return them directly?\n\nActually, I think I misread the code. Let me look again at the non-fragmented case:\n\n```cpp\nif (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n}\n```\n\nFor non-fragmented, `sequence = message_id_counter_++`. This is just an incrementing counter: 0, 1, 2, 3, ...\n\nFor fragmented:\n```cpp\nconst std::uint64_t msg_id = message_id_counter_++; // Gets next ID\n...\nconst std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n```\n\nSo if we're alternating between small and large packets:\n1. Small packet 1: sequence = 0\n2. Large packet (2 fragments): msg_id=1, fragment 0 sequence = 1<<32|0 = 4294967296, fragment 1 sequence = 1<<32|1 = 4294967297\n3. Small packet 2: sequence = 2\n4. Large packet (2 fragments): msg_id=3, fragment 0 sequence = 3<<32|0, fragment 1 sequence = 3<<32|1\n\nSo non-fragmented packets have sequence in range [0, 2^32-1] (assuming we don't send more than 2^32 messages).\nFragmented packets have sequence >= 2^32 (when msg_id >= 1) OR sequence=0 when msg_id=0 and frag_idx=0.\n\nThe only ambiguity is when msg_id=0 (the very first fragmented message) and frag_idx=0. In that case, sequence=0, which is the same as a non-fragmented message with msg_id=0.\n\nWe can handle this by:\n1. If sequence < 2^32 AND fin=true (or this is the first packet of a stream), treat as non-fragmented\n2. If sequence >= 2^32, it's definitely a fragment\n3. If sequence < 2^32 AND we receive more fragments with the same high 32 bits, it was fragmented\n\nActually, let me think about this from the receiver's perspective more carefully.\n\nThe receiver has `fragment_reassembly_` which is keyed by `message_id`. Looking at FragmentReassembly:\n```cpp\nbool push(std::uint64_t message_id, Fragment fragment, TimePoint now);\nstd::optional<std::vector<std::uint8_t>> try_reassemble(std::uint64_t message_id);\n```\n\nSo the receiver needs to:\n1. Extract `message_id` from the sequence (high 32 bits)\n2. Extract `frag_idx` from the sequence (low 32 bits)\n3. Create a Fragment with offset and data\n4. Call push and try_reassemble\n\nBut wait, the Fragment struct uses `offset` not `frag_idx`. And we don't have a way to compute offset from frag_idx without knowing the size of previous fragments.\n\nActually, we do have this information! If we're receiving fragments in order:\n- Fragment 0: offset = 0\n- Fragment 1: offset = size of fragment 0\n- Fragment 2: offset = size of fragment 0 + size of fragment 1\n- ...\n\nBut we're not guaranteed to receive in order. So we'd need to buffer and reorder.\n\nHmm, this is getting complicated. Let me look at a simpler fix.\n\nActually, looking at the actual issue: the 50-byte fragments are failing on Linux TUN because they're not valid IP packets. On Windows (Wintun), they're succeeding but probably being dropped silently by the OS.\n\nThe simplest fix for now might be to just filter out invalid packets (non-IPv4/IPv6) before writing to TUN. But that doesn't solve the actual problem - packets would still be lost.\n\nLet me look at whether there's a simpler workaround. Looking at the MTU settings:\n- TUN MTU is set to 1400\n- max_fragment_size is 1350\n\nSo if we set max_fragment_size to be at least as large as TUN MTU, fragmentation wouldn't happen. But that might not be possible due to encryption overhead.\n\nActually, let me calculate:\n- TUN MTU: 1400 bytes\n- After encryption overhead (AEAD tag 16 bytes + sequence 8 bytes): 1400 + 24 = 1424 bytes\n- UDP MTU is usually around 1472 bytes (1500 ethernet - 28 IP/UDP header)\n\nSo there's room. But the real issue is that the IP stack might send packets up to MTU size (1400 bytes), and after encryption they become 1424 bytes which still fits in UDP.\n\nBut looking at the logs, we're seeing 1350-byte fragments. This means packets larger than 1350 bytes are being fragmented at the mux layer.\n\nLet me check what max_fragment_size is set to. Looking at the config:\n```cpp\nstd::size_t max_fragment_size{1350};\n```\n\nAnd looking at the TUN MTU:\n```cpp\nstd::size_t mtu{1400};\n```\n\nSo any IP packet between 1351 and 1400 bytes will be fragmented. That's the issue.\n\nOne quick fix would be to increase max_fragment_size to match MTU (1400). But that might cause issues with encrypted packet size exceeding UDP MTU.\n\nLet me calculate the overhead more carefully:\n- Mux frame header (DataFrame): 1 (kind) + 8 (stream_id) + 8 (sequence) + 1 (flags) + 2 (payload_len) = 20 bytes\n- AEAD overhead: 16 bytes (tag)\n- Sequence prefix: 8 bytes\n\nTotal overhead: 20 + 16 + 8 = 44 bytes\n\nSo for a 1400-byte IP packet:\n- Encrypted packet size: 1400 + 44 = 1444 bytes\n\nTypical UDP MTU: 1472 bytes (1500 - 28)\n\nSo 1444 < 1472, meaning a 1400-byte IP packet should fit without mux-layer fragmentation.\n\nBut the current max_fragment_size is 1350, which means anything over 1350 gets fragmented. Let me calculate:\n- max_fragment_size 1350 + overhead 44 = 1394 bytes per UDP packet\n\nThis is well under 1472, so we have room to increase max_fragment_size.\n\nHowever, changing max_fragment_size might have other implications. The safer fix is to implement proper fragment reassembly.\n\nLet me implement the fragment reassembly fix in decrypt_packet.\n\nActually, let me first understand the Fragment offset issue. Looking at the sender:\n```cpp\n// Fragment the data.\nconst std::uint64_t msg_id = message_id_counter_++;\nstd::size_t offset = 0;\nstd::uint64_t frag_seq = 0;\n\nwhile (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin;\n\n std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n\n const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n\n frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n\n offset += chunk_size;\n ++frag_seq;\n}\n```\n\nSo the sender does track `offset` and `frag_seq` (fragment index), but only `frag_seq` is encoded in the sequence. The offset is NOT transmitted.\n\nOn the receiver side, to compute offset, we'd need to know the sizes of all previous fragments. If fragments arrive out of order, we can't compute offset.\n\nLooking at the FragmentReassembly class again:\n```cpp\nstruct Fragment {\n std::uint16_t offset{0};\n std::vector<std::uint8_t> data;\n bool last{false};\n};\n```\n\nThe offset here is the byte offset in the reassembled message. With the current protocol, the receiver doesn't know the offset directly.\n\nOne solution is to change the protocol to include offset. But that would be a breaking change.\n\nAnother solution is to track fragment sizes on the receiver. But this is complex with out-of-order delivery.\n\nThe simplest solution for now, given that fragments typically arrive in order (same UDP socket, no reordering needed for small bursts), is to assume fragments arrive in order and compute offset from accumulated sizes.\n\nLet me implement a simpler approach:\n\n1. For each message_id, track the expected next fragment index and cumulative offset\n2. When a fragment arrives:\n - Extract message_id (high 32 bits) and frag_idx (low 32 bits)\n - If frag_idx matches expected, add to buffer with computed offset\n - If frag_idx > expected, we have a gap (drop the message or wait)\n3. When fin=true fragment arrives, attempt reassembly\n\nActually, since fragments are typically in order (same UDP path), let me implement a simpler version:\n\n1. If sequence's high 32 bits are non-zero, it's a fragment\n2. Extract message_id = sequence >> 32, frag_idx = sequence & 0xFFFFFFFF\n3. Store fragments in a map keyed by message_id\n4. When fin=true, reassemble and return\n\nLet me implement this now." | |
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| "content": " 186→ ++stats_.packets_received;\n 187→ stats_.bytes_received += ciphertext.size();\n 188→\n 189→ // Parse mux frames from decrypted data.\n 190→ std::vector<mux::MuxFrame> frames;\n 191→ auto frame = mux::MuxCodec::decode(*decrypted);\n 192→ if (frame) {\n 193→ // Log frame details for debugging (Issue #72)\n 194→ LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n 195→ static_cast<int>(frame->kind),\n 196→ frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n 197→ frames.push_back(std::move(*frame));\n 198→\n 199→ if (frame->kind == mux::FrameKind::kData) {\n 200→ ++stats_.fragments_received;\n 201→ recv_ack_bitmap_.ack(sequence);\n 202→ }\n 203→ } else {\n 204→ // Log frame decode failure for debugging (Issue #72)\n 205→ LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n 206→ decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n 207→ }\n 208→\n 209→ if (sequence > recv_sequence_max_) {\n 210→ recv_sequence_max_ = sequence;\n 211→ }\n 212→\n 213→ return frames;\n 214→}\n 215→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": " ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n", | |
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| "text": "Now I'll implement the fragment reassembly logic. The key insight is:\n\n1. For non-fragmented packets: `sequence` is just a counter (0, 1, 2, ...), and high 32 bits are 0\n2. For fragmented packets: `sequence = (msg_id << 32) | frag_idx`, so high 32 bits are msg_id (>= 1 for messages after the first)\n\nThe tricky case is when msg_id=0 (first fragmented message). In that case:\n- frag_idx=0: sequence=0 (same as non-fragmented msg_id=0)\n- frag_idx=1: sequence=1 (same as non-fragmented msg_id=1)\n\nBut we can detect this: if we receive a packet with sequence=0 and fin=false, and then receive sequence=1 with fin=true (and same msg_id high bits), they might be fragments of message 0.\n\nActually, let me look at the encoding more carefully:\n- Non-fragmented: sequence=msg_id (so sequence=0, 1, 2, ...)\n- Fragmented: sequence=(msg_id << 32) | frag_idx\n\nFor the FIRST fragmented message (msg_id=0):\n- frag_idx=0: sequence=(0<<32)|0=0\n- frag_idx=1: sequence=(0<<32)|1=1\n\nThis is indistinguishable from non-fragmented messages 0 and 1.\n\nFor the SECOND fragmented message (msg_id=1):\n- frag_idx=0: sequence=(1<<32)|0=4294967296\n- frag_idx=1: sequence=(1<<32)|1=4294967297\n\nThis is clearly distinguishable (sequence >= 2^32).\n\nSo the issue only affects the very first message (msg_id=0) if it happens to be fragmented. After that, all fragmented messages have sequence >= 2^32.\n\nA simple fix: check if sequence >= 2^32. If so, it's definitely a fragment. If sequence < 2^32, it might be a fragment of msg_id=0 OR a non-fragmented message. We can disambiguate by checking if fin=true.\n\nWait, but for non-fragmented messages, the caller defaults to fin=false! So:\n- Non-fragmented with default fin=false: sequence=0, 1, 2, ..., fin=false\n- Fragmented msg_id=0: sequence=0, fin=false (first frag); sequence=1, fin=false (middle frag); sequence=N, fin=true (last frag) if original fin=true\n\nActually wait, looking at the code again:\n```cpp\nconst bool frag_fin = is_last && fin;\n```\n\nSo fin is only true on the last fragment IF the caller passed fin=true. But the caller (on_tun_packet) doesn't pass fin=true.\n\nSo ALL packets have fin=false! This means we can't distinguish the last fragment.\n\nLet me check the caller in tunnel.cpp:\n```cpp\nvoid Tunnel::on_tun_packet(std::span<const std::uint8_t> packet) {\n ...\n auto encrypted_packets = session_->encrypt_data(packet); // fin defaults to false\n ...\n}\n```\n\nAnd in server/main.cpp:\n```cpp\nauto packets = session->transport->encrypt_data(\n std::span<const std::uint8_t>(buffer.data(), static_cast<std::size_t>(tun_read)));\n```\n\nAlso no fin. So all packets are sent with fin=false.\n\nThis means the current design doesn't properly support fragment reassembly because the receiver can't know when a message is complete!\n\nLooking at the fragment_data function again:\n```cpp\nconst bool is_last = (offset + chunk_size >= data.size());\nconst bool frag_fin = is_last && fin; // fin is the parameter, which is always false\n```\n\nSo frag_fin is always false. The last fragment is NOT marked with fin=true.\n\nThis is a protocol design issue. To fix fragment reassembly properly, we need to always set fin=true on the last fragment, regardless of the caller's fin parameter.\n\nLet me look at what the fix should be:\n\nOption 1: Change fragment_data to always set fin=true on the last fragment\n- This changes protocol behavior\n- Non-fragmented packets would have fin=true\n- Last fragment would have fin=true\n\nOption 2: Change encrypt_data to pass fin=true by default\n- But then all non-fragmented packets would have fin=true too\n\nOption 3: Add a new field to indicate \"this is a fragment\" vs \"this is complete\"\n- More invasive change\n\nI think Option 1 is the cleanest: the last fragment (or only fragment for non-fragmented) should have fin=true. This makes the protocol consistent.\n\nLet me check if anything depends on fin being false:" | |
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| "content": "src/transport/mux/fragment_reassembly.cpp:36: auto it = state_.find(message_id);\nsrc/transport/mux/mux_codec.cpp:61: std::uint8_t flags = frame.data.fin ? 0x01 : 0x00;\nsrc/transport/mux/mux_codec.cpp:108: frame.data.fin = (flags & 0x01) != 0;\nsrc/transport/mux/mux_codec.cpp:177: frame.data.fin = fin;\ntests/unit/mux_codec_tests.cpp:19: EXPECT_FALSE(decoded->data.fin);\ntests/unit/mux_codec_tests.cpp:29: EXPECT_TRUE(decoded->data.fin);\nsrc/transport/mux/reorder_buffer.cpp:28: auto it = buffer_.find(next_);\nsrc/transport/mux/retransmit_buffer.cpp:88: auto it = pending_.find(sequence);\nsrc/transport/mux/retransmit_buffer.cpp:145: auto it = pending_.find(sequence);\nsrc/transport/mux/retransmit_buffer.cpp:173: auto it = pending_.find(sequence);\nsrc/transport/event_loop/event_loop_linux.cpp:55: if (sockets_.find(fd) != sockets_.end()) {\nsrc/transport/event_loop/event_loop_linux.cpp:95: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:117: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:162: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:222: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:240: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:270: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:64: if (sockets_.find(fd) != sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:94: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:110: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:155: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:245: if (sockets_.find(fd) == sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:254: if (sockets_.find(fd) == sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:261: if (sockets_.find(fd) == sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:265: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:284: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:314: auto it = sockets_.find(fd);\ntests/unit/websocket_wrapper_tests.cpp:97: EXPECT_TRUE(header.fin);\ntests/unit/websocket_wrapper_tests.cpp:119: EXPECT_TRUE(header.fin);\ntests/unit/websocket_wrapper_tests.cpp:150: header.fin = true;\ntests/unit/websocket_wrapper_tests.cpp:170: header.fin = true;\ntests/unit/websocket_wrapper_tests.cpp:197: header.fin = true;\ntests/unit/websocket_wrapper_tests.cpp:218: header.fin = true;\nsrc/windows/service_main.cpp:401: auto slash_pos = route_str.find('/');\ntests/unit/session_table_tests.cpp:50: auto* session = table.find_by_endpoint(endpoint);\ntests/unit/session_table_tests.cpp:68: auto* session = table.find_by_tunnel_ip(\"10.8.0.10\");\ntests/unit/session_table_tests.cpp:89: EXPECT_EQ(table.find_by_id(*session_id), nullptr);\ntests/unit/session_table_tests.cpp:90: EXPECT_EQ(table.find_by_endpoint(endpoint), nullptr);\ntests/unit/session_table_tests.cpp:223: auto* session1 = table.find_by_id(*session_id1);\ntests/unit/session_table_tests.cpp:236: auto* session2 = table.find_by_id(*session_id2);\ntests/unit/metrics_tests.cpp:284: EXPECT_NE(json.find(\"\\\"requests\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:285: EXPECT_NE(json.find(\"\\\"counter\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:286: EXPECT_NE(json.find(\"\\\"connections\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:287: EXPECT_NE(json.find(\"\\\"gauge\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:298: EXPECT_NE(prom.find(\"# TYPE test_requests counter\"), std::string::npos);\ntests/unit/metrics_tests.cpp:299: EXPECT_NE(prom.find(\"test_requests 100\"), std::string::npos);\ntests/unit/metrics_tests.cpp:300: EXPECT_NE(prom.find(\"# TYPE test_connections gauge\"), std::string::npos);\ntests/unit/metrics_tests.cpp:301: EXPECT_NE(prom.find(\"test_connections 42\"), std::string::npos);\nsrc/tunnel/session_migration.cpp:92: auto it = tokens_.find(key);\nsrc/tunnel/session_migration.cpp:114: auto it = tokens_.find(key);\nsrc/tunnel/session_migration.cpp:140: auto it = session_tokens_.find(session_id);\nsrc/tunnel/session_migration.cpp:190: auto it = tokens_.find(key);\nsrc/tunnel/session_migration.cpp:333: auto it = migration_records_.find(session_id);\nsrc/tunnel/session_migration.cpp:350: auto it = migration_records_.find(session_id);\nsrc/tunnel/session_migration.cpp:393: auto it = migration_records_.find(session_id);\ntests/unit/constrained_logging_tests.cpp:123: EXPECT_NE(json.find(\"\\\"level\\\":\\\"info\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:124: EXPECT_NE(json.find(\"\\\"message\\\":\\\"test message\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:125: EXPECT_NE(json.find(\"\\\"location\\\":\\\"test.cpp:42\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:136: EXPECT_NE(json.find(\"\\\\\\\"quoted\\\\\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:137: EXPECT_NE(json.find(\"\\\\n\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:152: EXPECT_NE(json.find(\"\\\"session_id\\\":\\\"12345\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:153: EXPECT_NE(json.find(\"\\\"client_ip\\\":\\\"192.168.1.1\\\"\"), std::string::npos);\nsrc/server/main.cpp:461: auto* session = session_table.find_by_endpoint(pkt.remote);\nsrc/server/main.cpp:600: auto* session = session_table.find_by_tunnel_ip(dst_ip_str);\nsrc/server/server_config.cpp:84: auto pos = line.find('=');\nsrc/server/session_table.cpp:108: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:118: auto it = endpoint_index_.find(key);\nsrc/server/session_table.cpp:120: auto session_it = sessions_.find(it->second);\nsrc/server/session_table.cpp:130: auto it = ip_index_.find(ip);\nsrc/server/session_table.cpp:132: auto session_it = sessions_.find(it->second);\nsrc/server/session_table.cpp:142: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:150: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:177: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:213: auto it = sessions_.find(id);\nsrc/tun/mtu_discovery.cpp:13: auto it = peers_.find(peer);\nsrc/tun/mtu_discovery.cpp:24: auto it = peers_.find(peer);\nsrc/gui-client/mainwindow.cpp:1277: if (error.find(\"Access is denied\") != std::string::npos ||\nsrc/gui-client/mainwindow.cpp:1278: error.find(\"5\") != std::string::npos) { // ERROR_ACCESS_DENIED = 5\nsrc/client/main.cpp:220: auto slash_pos = route_str.find('/');\nsrc/client/client_config.cpp:78: auto pos = line.find('=');\nsrc/common/logging/constrained_logger.cpp:313: if (merged_context.find(key) == merged_context.end()) {\nsrc/common/protocol_wrapper/websocket_wrapper.cpp:59: header.fin = true;\nsrc/common/protocol_wrapper/websocket_wrapper.cpp:122: header.fin = (byte0 & 0x80) != 0;\nsrc/common/protocol_wrapper/websocket_wrapper.cpp:171: if (header.fin) {\nsrc/common/signal/signal_handler.cpp:52: if (original_handlers_.find(signum) == original_handlers_.end()) {\nsrc/common/signal/signal_handler.cpp:74: if (callbacks_.find(signum) == callbacks_.end()) {\nsrc/common/signal/signal_handler.cpp:87: auto it = original_handlers_.find(signum);\nsrc/common/ipc/ipc_socket_windows.cpp:332: << \", contains newline: \" << (conn.receive_buffer.find('\\n') != std::string::npos ? \"YES\" : \"NO\") << std::endl;\nsrc/common/ipc/ipc_socket_windows.cpp:337: while ((pos = conn.receive_buffer.find('\\n')) != std::string::npos) {\nsrc/common/ipc/ipc_socket_windows.cpp:646: while ((pos = receive_buffer_.find('\\n')) != std::string::npos) {\nsrc/common/handshake/handshake_replay_cache.cpp:31: auto it = cache_map_.find(key);\nsrc/common/ipc/ipc_socket_unix.cpp:211: while ((pos = conn.receive_buffer.find('\\n')) != std::string::npos) {\nsrc/common/ipc/ipc_socket_unix.cpp:387: while ((pos = receive_buffer_.find('\\n')) != std::string::npos) {\nsrc/common/metrics/metrics.cpp:175: auto it = counters_.find(name);\nsrc/common/metrics/metrics.cpp:189: auto it = gauges_.find(name);\nsrc/common/metrics/metrics.cpp:203: auto it = histograms_.find(name);\nsrc/common/metrics/metrics.cpp:217: auto it = histograms_.find(name);\nsrc/common/metrics/metrics.cpp:231: auto it = summaries_.find(name);\nsrc/common/utils/advanced_rate_limiter.cpp:172: auto it = clients_.find(client_id);\nsrc/common/utils/advanced_rate_limiter.cpp:201: auto it = clients_.find(client_id);\nsrc/common/utils/advanced_rate_limiter.cpp:247: auto it = clients_.find(client_id);\nsrc/common/utils/advanced_rate_limiter.cpp:253: auto config_it = client_configs_.find(client_id);\nsrc/common/session/session_lifecycle.cpp:220: auto it = sessions_.find(session_id);\nsrc/common/updater/auto_updater.cpp:125: if (name_lower.find(\"linux\") != std::string::npos ||\nsrc/common/updater/auto_updater.cpp:126: name_lower.find(\"macos\") != std::string::npos ||\nsrc/common/updater/auto_updater.cpp:127: name_lower.find(\"darwin\") != std::string::npos) {\nsrc/common/updater/auto_updater.cpp:132: if (name_lower.find(pattern) != std::string::npos) {\nsrc/common/updater/auto_updater.cpp:463: auto installer = release.find_installer();\nsrc/common/utils/timer_heap.cpp:25: auto it = active_timers_.find(id);\nsrc/common/utils/timer_heap.cpp:35: auto it = active_timers_.find(id);\nsrc/common/utils/timer_heap.cpp:68: auto it = active_timers_.find(entry.id);\nsrc/common/utils/timer_heap.cpp:98: auto it = active_timers_.find(top.id);" | |
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auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:162: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:222: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:240: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_linux.cpp:270: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:64: if (sockets_.find(fd) != sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:94: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:110: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:155: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:245: if (sockets_.find(fd) == sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:254: if (sockets_.find(fd) == sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:261: if (sockets_.find(fd) == sockets_.end()) {\nsrc/transport/event_loop/event_loop_windows.cpp:265: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:284: auto it = sockets_.find(fd);\nsrc/transport/event_loop/event_loop_windows.cpp:314: auto it = sockets_.find(fd);\ntests/unit/websocket_wrapper_tests.cpp:97: EXPECT_TRUE(header.fin);\ntests/unit/websocket_wrapper_tests.cpp:119: EXPECT_TRUE(header.fin);\ntests/unit/websocket_wrapper_tests.cpp:150: header.fin = true;\ntests/unit/websocket_wrapper_tests.cpp:170: header.fin = true;\ntests/unit/websocket_wrapper_tests.cpp:197: header.fin = true;\ntests/unit/websocket_wrapper_tests.cpp:218: header.fin = true;\nsrc/windows/service_main.cpp:401: auto slash_pos = route_str.find('/');\ntests/unit/session_table_tests.cpp:50: auto* session = table.find_by_endpoint(endpoint);\ntests/unit/session_table_tests.cpp:68: auto* session = table.find_by_tunnel_ip(\"10.8.0.10\");\ntests/unit/session_table_tests.cpp:89: EXPECT_EQ(table.find_by_id(*session_id), nullptr);\ntests/unit/session_table_tests.cpp:90: EXPECT_EQ(table.find_by_endpoint(endpoint), nullptr);\ntests/unit/session_table_tests.cpp:223: auto* session1 = table.find_by_id(*session_id1);\ntests/unit/session_table_tests.cpp:236: auto* session2 = table.find_by_id(*session_id2);\ntests/unit/metrics_tests.cpp:284: EXPECT_NE(json.find(\"\\\"requests\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:285: EXPECT_NE(json.find(\"\\\"counter\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:286: EXPECT_NE(json.find(\"\\\"connections\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:287: EXPECT_NE(json.find(\"\\\"gauge\\\"\"), std::string::npos);\ntests/unit/metrics_tests.cpp:298: EXPECT_NE(prom.find(\"# TYPE test_requests counter\"), std::string::npos);\ntests/unit/metrics_tests.cpp:299: EXPECT_NE(prom.find(\"test_requests 100\"), std::string::npos);\ntests/unit/metrics_tests.cpp:300: EXPECT_NE(prom.find(\"# TYPE test_connections gauge\"), std::string::npos);\ntests/unit/metrics_tests.cpp:301: EXPECT_NE(prom.find(\"test_connections 42\"), std::string::npos);\nsrc/tunnel/session_migration.cpp:92: auto it = tokens_.find(key);\nsrc/tunnel/session_migration.cpp:114: auto it = tokens_.find(key);\nsrc/tunnel/session_migration.cpp:140: auto it = session_tokens_.find(session_id);\nsrc/tunnel/session_migration.cpp:190: auto it = tokens_.find(key);\nsrc/tunnel/session_migration.cpp:333: auto it = migration_records_.find(session_id);\nsrc/tunnel/session_migration.cpp:350: auto it = migration_records_.find(session_id);\nsrc/tunnel/session_migration.cpp:393: auto it = migration_records_.find(session_id);\ntests/unit/constrained_logging_tests.cpp:123: EXPECT_NE(json.find(\"\\\"level\\\":\\\"info\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:124: EXPECT_NE(json.find(\"\\\"message\\\":\\\"test message\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:125: EXPECT_NE(json.find(\"\\\"location\\\":\\\"test.cpp:42\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:136: EXPECT_NE(json.find(\"\\\\\\\"quoted\\\\\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:137: EXPECT_NE(json.find(\"\\\\n\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:152: EXPECT_NE(json.find(\"\\\"session_id\\\":\\\"12345\\\"\"), std::string::npos);\ntests/unit/constrained_logging_tests.cpp:153: EXPECT_NE(json.find(\"\\\"client_ip\\\":\\\"192.168.1.1\\\"\"), std::string::npos);\nsrc/server/main.cpp:461: auto* session = session_table.find_by_endpoint(pkt.remote);\nsrc/server/main.cpp:600: auto* session = session_table.find_by_tunnel_ip(dst_ip_str);\nsrc/server/server_config.cpp:84: auto pos = line.find('=');\nsrc/server/session_table.cpp:108: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:118: auto it = endpoint_index_.find(key);\nsrc/server/session_table.cpp:120: auto session_it = sessions_.find(it->second);\nsrc/server/session_table.cpp:130: auto it = ip_index_.find(ip);\nsrc/server/session_table.cpp:132: auto session_it = sessions_.find(it->second);\nsrc/server/session_table.cpp:142: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:150: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:177: auto it = sessions_.find(session_id);\nsrc/server/session_table.cpp:213: auto it = sessions_.find(id);\nsrc/tun/mtu_discovery.cpp:13: auto it = peers_.find(peer);\nsrc/tun/mtu_discovery.cpp:24: auto it = peers_.find(peer);\nsrc/gui-client/mainwindow.cpp:1277: if (error.find(\"Access is denied\") != std::string::npos ||\nsrc/gui-client/mainwindow.cpp:1278: error.find(\"5\") != std::string::npos) { // ERROR_ACCESS_DENIED = 5\nsrc/client/main.cpp:220: auto slash_pos = route_str.find('/');\nsrc/client/client_config.cpp:78: auto pos = line.find('=');\nsrc/common/logging/constrained_logger.cpp:313: if (merged_context.find(key) == merged_context.end()) {\nsrc/common/protocol_wrapper/websocket_wrapper.cpp:59: header.fin = true;\nsrc/common/protocol_wrapper/websocket_wrapper.cpp:122: header.fin = (byte0 & 0x80) != 0;\nsrc/common/protocol_wrapper/websocket_wrapper.cpp:171: if (header.fin) {\nsrc/common/signal/signal_handler.cpp:52: if (original_handlers_.find(signum) == original_handlers_.end()) {\nsrc/common/signal/signal_handler.cpp:74: if (callbacks_.find(signum) == callbacks_.end()) {\nsrc/common/signal/signal_handler.cpp:87: auto it = original_handlers_.find(signum);\nsrc/common/ipc/ipc_socket_windows.cpp:332: << \", contains newline: \" << (conn.receive_buffer.find('\\n') != std::string::npos ? \"YES\" : \"NO\") << std::endl;\nsrc/common/ipc/ipc_socket_windows.cpp:337: while ((pos = conn.receive_buffer.find('\\n')) != std::string::npos) {\nsrc/common/ipc/ipc_socket_windows.cpp:646: while ((pos = receive_buffer_.find('\\n')) != std::string::npos) {\nsrc/common/handshake/handshake_replay_cache.cpp:31: auto it = cache_map_.find(key);\nsrc/common/ipc/ipc_socket_unix.cpp:211: while ((pos = conn.receive_buffer.find('\\n')) != std::string::npos) {\nsrc/common/ipc/ipc_socket_unix.cpp:387: while ((pos = receive_buffer_.find('\\n')) != std::string::npos) {\nsrc/common/metrics/metrics.cpp:175: auto it = counters_.find(name);\nsrc/common/metrics/metrics.cpp:189: auto it = gauges_.find(name);\nsrc/common/metrics/metrics.cpp:203: auto it = histograms_.find(name);\nsrc/common/metrics/metrics.cpp:217: auto it = histograms_.find(name);\nsrc/common/metrics/metrics.cpp:231: auto it = summaries_.find(name);\nsrc/common/utils/advanced_rate_limiter.cpp:172: auto it = clients_.find(client_id);\nsrc/common/utils/advanced_rate_limiter.cpp:201: auto it = clients_.find(client_id);\nsrc/common/utils/advanced_rate_limiter.cpp:247: auto it = clients_.find(client_id);\nsrc/common/utils/advanced_rate_limiter.cpp:253: auto config_it = client_configs_.find(client_id);\nsrc/common/session/session_lifecycle.cpp:220: auto it = sessions_.find(session_id);\nsrc/common/updater/auto_updater.cpp:125: if (name_lower.find(\"linux\") != std::string::npos ||\nsrc/common/updater/auto_updater.cpp:126: name_lower.find(\"macos\") != std::string::npos ||\nsrc/common/updater/auto_updater.cpp:127: name_lower.find(\"darwin\") != std::string::npos) {\nsrc/common/updater/auto_updater.cpp:132: if (name_lower.find(pattern) != std::string::npos) {\nsrc/common/updater/auto_updater.cpp:463: auto installer = release.find_installer();\nsrc/common/utils/timer_heap.cpp:25: auto it = active_timers_.find(id);\nsrc/common/utils/timer_heap.cpp:35: auto it = active_timers_.find(id);\nsrc/common/utils/timer_heap.cpp:68: auto it = active_timers_.find(entry.id);\nsrc/common/utils/timer_heap.cpp:98: auto it = active_timers_.find(top.id);", | |
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| [2026-01-28T20:08:56.171Z] [INFO] { | |
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| "text": "Looking at the relevant uses of `data.fin`:\n1. In mux_codec.cpp: encode/decode the fin flag\n2. In tests: checking fin flag\n\nNothing in the tunnel or server code checks the fin flag after receiving. So changing how fin is set should be safe.\n\nLet me implement the fix. I'll:\n\n1. Change `fragment_data` to always set `fin=true` on the last fragment (regardless of caller's fin parameter)\n2. Update `decrypt_packet` to use fragment reassembly for fragmented packets\n\nFirst, let me update `fragment_data`:" | |
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| [2026-01-28T20:08:57.475Z] [INFO] { | |
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| [2026-01-28T20:08:57.505Z] [INFO] { | |
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| "content": " 375→ return packet;\n 376→}\n 377→\n 378→std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n 379→ std::uint64_t stream_id, bool fin) {\n 380→ std::vector<mux::MuxFrame> frames;\n 381→\n 382→ if (data.size() <= config_.max_fragment_size) {\n 383→ // No fragmentation needed.\n 384→ frames.push_back(mux::make_data_frame(\n 385→ stream_id, message_id_counter_++, fin,\n 386→ std::vector<std::uint8_t>(data.begin(), data.end())));\n 387→ return frames;\n 388→ }\n 389→\n 390→ // Fragment the data.\n 391→ const std::uint64_t msg_id = message_id_counter_++;\n 392→ std::size_t offset = 0;\n 393→ std::uint64_t frag_seq = 0;\n 394→\n 395→ while (offset < data.size()) {\n 396→ const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n 397→ const bool is_last = (offset + chunk_size >= data.size());\n 398→ const bool frag_fin = is_last && fin;\n 399→\n 400→ std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n 401→ data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n 402→\n 403→ // For fragmented messages, we use a special encoding in the sequence field.\n 404→ // High 32 bits: message ID, Low 32 bits: fragment index.\n 405→ const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n 406→\n 407→ frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n 408→\n 409→ offset += chunk_size;\n 410→ ++frag_seq;\n 411→ }\n 412→\n 413→ return frames;\n 414→}\n 415→\n 416→} // namespace veil::transport\n 417→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "filePath": "/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp", | |
| "content": " return packet;\n}\n\nstd::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n\n // Fragment the data.\n const std::uint64_t msg_id = message_id_counter_++;\n std::size_t offset = 0;\n std::uint64_t frag_seq = 0;\n\n while (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin;\n\n std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n\n // For fragmented messages, we use a special encoding in the sequence field.\n // High 32 bits: message ID, Low 32 bits: fragment index.\n const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n\n frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n\n offset += chunk_size;\n ++frag_seq;\n }\n\n return frames;\n}\n\n} // namespace veil::transport\n", | |
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| [2026-01-28T20:09:00.204Z] [INFO] { | |
| "type": "assistant", | |
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| "model": "claude-opus-4-5-20251101", | |
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| "type": "text", | |
| "text": "Now I'll make the edits. First, I'll fix `fragment_data` to always set `fin=true` on the last fragment. Then I'll update `decrypt_packet` to properly reassemble fragments." | |
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| [2026-01-28T20:09:04.319Z] [INFO] { | |
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| "old_string": " if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }", | |
| "new_string": " if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed. Always set fin=true to indicate complete message.\n // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, true,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }" | |
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| "content": "The file /tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp has been updated successfully." | |
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| "oldString": " if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }", | |
| "newString": " if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed. Always set fin=true to indicate complete message.\n // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, true,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }", | |
| "originalFile": "#include \"transport/session/transport_session.h\"\n\n#include <sodium.h>\n\n#include <algorithm>\n#include <cassert>\n#include <chrono>\n#include <cstdint>\n#include <limits>\n#include <optional>\n#include <span>\n#include <utility>\n#include <vector>\n\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/crypto/random.h\"\n#include \"common/logging/logger.h\"\n\n// SECURITY: Nonce overflow threshold.\n// With uint64_t, we can send 2^64 packets before overflow. At 10 Gbps with 1KB packets,\n// this would take over 58 million years. However, we set a conservative threshold to\n// detect any anomalies or implementation bugs that might cause rapid sequence growth.\n// This threshold triggers a warning well before any practical risk of overflow.\nconstexpr std::uint64_t kNonceOverflowWarningThreshold = std::numeric_limits<std::uint64_t>::max() - (1ULL << 32);\n\nnamespace veil::transport {\n\nTransportSession::TransportSession(const handshake::HandshakeSession& handshake_session,\n TransportSessionConfig config, std::function<TimePoint()> now_fn)\n : config_(config),\n now_fn_(std::move(now_fn)),\n keys_(handshake_session.keys),\n current_session_id_(handshake_session.session_id),\n send_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.send_key, keys_.send_nonce)),\n recv_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.recv_key, keys_.recv_nonce)),\n replay_window_(config_.replay_window_size),\n session_rotator_(config_.session_rotation_interval, config_.session_rotation_packets),\n reorder_buffer_(0, config_.reorder_buffer_size),\n fragment_reassembly_(config_.fragment_buffer_size),\n retransmit_buffer_(config_.retransmit_config, now_fn_) {\n // Enhanced diagnostic logging for session creation (Issue #69, #72)\n // Use INFO level so key fingerprints are always logged, not just in verbose mode\n // This helps diagnose key mismatch issues between client and server\n LOG_INFO(\"TransportSession created: session_id={}\", current_session_id_);\n LOG_INFO(\" send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_INFO(\" recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n LOG_INFO(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3],\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3]);\n}\n\nTransportSession::~TransportSession() {\n // SECURITY: Clear all session key material on destruction\n sodium_memzero(keys_.send_key.data(), keys_.send_key.size());\n sodium_memzero(keys_.recv_key.data(), keys_.recv_key.size());\n sodium_memzero(keys_.send_nonce.data(), keys_.send_nonce.size());\n sodium_memzero(keys_.recv_nonce.data(), keys_.recv_nonce.size());\n sodium_memzero(send_seq_obfuscation_key_.data(), send_seq_obfuscation_key_.size());\n sodium_memzero(recv_seq_obfuscation_key_.data(), recv_seq_obfuscation_key_.size());\n LOG_DEBUG(\"TransportSession destroyed, keys cleared\");\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::encrypt_data(\n std::span<const std::uint8_t> plaintext, std::uint64_t stream_id, bool fin) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n\n // Fragment data if necessary.\n auto frames = fragment_data(plaintext, stream_id, fin);\n\n for (auto& frame : frames) {\n auto encrypted = build_encrypted_packet(frame);\n\n // Store in retransmit buffer.\n if (retransmit_buffer_.has_capacity(encrypted.size())) {\n retransmit_buffer_.insert(send_sequence_ - 1, encrypted);\n }\n\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n if (frame.kind == mux::FrameKind::kData) {\n ++stats_.fragments_sent;\n }\n\n result.push_back(std::move(encrypted));\n ++packets_since_rotation_;\n }\n\n return result;\n}\n\nstd::vector<std::uint8_t> TransportSession::encrypt_frame(const mux::MuxFrame& frame) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Use the existing build_encrypted_packet method which properly encrypts any frame type.\n // This preserves the frame's original kind (ACK, control, heartbeat, etc.) without wrapping\n // it in a DATA frame like encrypt_data() does.\n auto encrypted = build_encrypted_packet(frame);\n\n // Update statistics for non-data frames (data frame stats are updated in encrypt_data)\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n ++packets_since_rotation_;\n\n return encrypted;\n}\n\nstd::optional<std::vector<mux::MuxFrame>> TransportSession::decrypt_packet(\n std::span<const std::uint8_t> ciphertext) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Minimum packet size: nonce (8 bytes for sequence) + tag (16 bytes) + header (1 byte minimum)\n constexpr std::size_t kMinPacketSize = 8 + 16 + 1;\n if (ciphertext.size() < kMinPacketSize) {\n LOG_DEBUG(\"Packet too small: {} bytes\", ciphertext.size());\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Extract obfuscated sequence from first 8 bytes.\n std::uint64_t obfuscated_sequence = 0;\n for (int i = 0; i < 8; ++i) {\n obfuscated_sequence = (obfuscated_sequence << 8) | ciphertext[static_cast<std::size_t>(i)];\n }\n\n // DPI RESISTANCE (Issue #21): Deobfuscate sequence number.\n // The sender obfuscated the sequence to prevent traffic analysis. We reverse the\n // obfuscation here to recover the real sequence for nonce derivation and replay checking.\n const std::uint64_t sequence = crypto::deobfuscate_sequence(obfuscated_sequence, recv_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for decryption debugging (Issue #69, #72)\n // Use WARN level temporarily to trace decryption flow in production\n LOG_WARN(\"Decrypt attempt: session_id={}, pkt_size={}, obfuscated_seq={:#018x}, deobfuscated_seq={}\",\n current_session_id_, ciphertext.size(), obfuscated_sequence, sequence);\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_8_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n\n // Replay check.\n if (!replay_window_.mark_and_check(sequence)) {\n LOG_WARN(\"Packet replay detected or out of window: sequence={}, highest={}\",\n sequence, replay_window_.highest());\n ++stats_.packets_dropped_replay;\n return std::nullopt;\n }\n LOG_WARN(\"Replay check passed, proceeding to decryption\");\n\n // Derive nonce from sequence.\n const auto nonce = crypto::derive_nonce(keys_.recv_nonce, sequence);\n\n // Decrypt (skip sequence prefix).\n auto ciphertext_body = ciphertext.subspan(8);\n auto decrypted = crypto::aead_decrypt(keys_.recv_key, nonce, {}, ciphertext_body);\n if (!decrypted) {\n // Enhanced error logging for decryption failures (Issue #69, #72)\n // Use WARN level so this always appears, not just in verbose mode\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch issues\n LOG_WARN(\"Decryption FAILED: session_id={}, sequence={}, ciphertext_size={}, \"\n \"recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, sequence, ciphertext_body.size(),\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n // Also log the obfuscation key fingerprint and packet header\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_pkt_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Enhanced diagnostic logging for decryption success (Issue #72)\n LOG_WARN(\"Decryption SUCCESS: session_id={}, sequence={}, decrypted_size={}\",\n current_session_id_, sequence, decrypted->size());\n\n ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n auto to_retransmit = retransmit_buffer_.get_packets_to_retransmit();\n\n for (const auto* pkt : to_retransmit) {\n if (retransmit_buffer_.mark_retransmitted(pkt->sequence)) {\n result.push_back(pkt->data);\n ++stats_.retransmits;\n } else {\n // Exceeded max retries, drop packet.\n retransmit_buffer_.drop_packet(pkt->sequence);\n }\n }\n\n return result;\n}\n\nvoid TransportSession::process_ack(const mux::AckFrame& ack) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Debug logging for ACK processing (Issue #72)\n LOG_WARN(\"process_ack called: stream_id={}, ack={}, bitmap={:#010x}, pending_before={}\",\n ack.stream_id, ack.ack, ack.bitmap, retransmit_buffer_.pending_count());\n\n // Cumulative ACK.\n retransmit_buffer_.acknowledge_cumulative(ack.ack);\n\n // Selective ACK from bitmap.\n for (std::uint32_t i = 0; i < 32; ++i) {\n if (((ack.bitmap >> i) & 1U) != 0U) {\n std::uint64_t seq = ack.ack - 1 - i;\n if (seq > 0) {\n retransmit_buffer_.acknowledge(seq);\n }\n }\n }\n\n // Debug logging for ACK processing result (Issue #72)\n LOG_WARN(\"process_ack done: pending_after={}\", retransmit_buffer_.pending_count());\n}\n\nmux::AckFrame TransportSession::generate_ack(std::uint64_t stream_id) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n return mux::AckFrame{\n .stream_id = stream_id,\n .ack = recv_ack_bitmap_.head(),\n .bitmap = recv_ack_bitmap_.bitmap(),\n };\n}\n\nbool TransportSession::should_rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n return session_rotator_.should_rotate(packets_since_rotation_, now_fn_());\n}\n\nvoid TransportSession::rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // SECURITY: Capture sequence number before rotation for verification\n [[maybe_unused]] const auto sequence_before_rotation = send_sequence_;\n\n current_session_id_ = session_rotator_.rotate(now_fn_());\n packets_since_rotation_ = 0;\n ++stats_.session_rotations;\n\n // ===========================================================================\n // SECURITY-CRITICAL: NONCE COUNTER LIFECYCLE\n // ===========================================================================\n // The nonce for ChaCha20-Poly1305 is derived as:\n // nonce = derive_nonce(base_nonce, send_sequence_)\n //\n // Where derive_nonce XORs the counter into the last 8 bytes of base_nonce.\n //\n // CRITICAL INVARIANT: send_sequence_ MUST NEVER be reset.\n //\n // Why this matters:\n // - ChaCha20-Poly1305 security completely breaks if the same (key, nonce) pair\n // is ever used twice\n // - The encryption key (keys_.send_key) is derived once during handshake and\n // does NOT change during session rotation\n // - Session rotation only changes the session_id for protocol-level management\n //\n // Nonce uniqueness guarantee:\n // - send_sequence_ is uint64_t, allowing 2^64 unique nonces\n // - At 10 Gbps with 1KB packets, exhaustion would take ~58 million years\n // - send_sequence_ is incremented after each packet in build_encrypted_packet()\n // - It is NEVER reset or decremented\n //\n // This design was chosen over alternatives like:\n // - Rotating keys on session rotation: Would require re-handshake or key derivation\n // - Resetting counter with new base_nonce: Adds complexity, risk of implementation bugs\n // - Using random nonces: Requires tracking to prevent collisions (birthday bound)\n //\n // See also: Issue #3 - Verify nonce counter lifecycle on session rotation\n // ===========================================================================\n\n // ASSERTION: Verify send_sequence_ was not reset (defense in depth)\n assert(send_sequence_ == sequence_before_rotation &&\n \"SECURITY VIOLATION: send_sequence_ must never be reset during rotation\");\n\n LOG_DEBUG(\"Session rotated to session_id={}, send_sequence_={} (unchanged)\",\n current_session_id_, send_sequence_);\n}\n\nstd::vector<std::uint8_t> TransportSession::build_encrypted_packet(const mux::MuxFrame& frame) {\n // SECURITY: Check for sequence number overflow (extremely unlikely but provides defense in depth)\n // At 10 Gbps with 1KB packets, reaching this threshold would take millions of years,\n // but we check anyway to catch any implementation bugs that might cause unexpected growth.\n if (send_sequence_ >= kNonceOverflowWarningThreshold) {\n LOG_ERROR(\"SECURITY WARNING: send_sequence_ approaching overflow (current={}). \"\n \"Session should be re-established to prevent nonce reuse.\",\n send_sequence_);\n // Note: We log but continue - in practice this is unreachable under normal operation.\n // A production system might want to force session termination here.\n }\n\n // Serialize the frame.\n auto plaintext = mux::MuxCodec::encode(frame);\n\n // Derive nonce from current send sequence.\n // SECURITY: Each packet gets a unique nonce = base_nonce XOR send_sequence_\n // Since send_sequence_ is never reset and always increments, nonces are guaranteed unique.\n const auto nonce = crypto::derive_nonce(keys_.send_nonce, send_sequence_);\n\n // Encrypt using ChaCha20-Poly1305 AEAD.\n auto ciphertext = crypto::aead_encrypt(keys_.send_key, nonce, {}, plaintext);\n\n // DPI RESISTANCE (Issue #21): Obfuscate sequence number before transmission.\n // Previously, the sequence was sent in plaintext, creating a DPI signature (monotonically\n // increasing values). Now we obfuscate it using ChaCha20 with a session-specific key.\n // The receiver can deobfuscate using the same key to recover the sequence for nonce derivation.\n const std::uint64_t obfuscated_sequence = crypto::obfuscate_sequence(send_sequence_, send_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for encryption (Issue #69)\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch between client and server\n LOG_DEBUG(\"Encrypt: session_id={}, sequence={}, obfuscated_seq={:#018x}, plaintext_size={}, \"\n \"send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, send_sequence_, obfuscated_sequence, plaintext.size(),\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_DEBUG(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3]);\n\n // Prepend obfuscated sequence number (8 bytes big-endian).\n std::vector<std::uint8_t> packet;\n packet.reserve(8 + ciphertext.size());\n for (int i = 7; i >= 0; --i) {\n packet.push_back(static_cast<std::uint8_t>((obfuscated_sequence >> (8 * i)) & 0xFF));\n }\n packet.insert(packet.end(), ciphertext.begin(), ciphertext.end());\n\n // SECURITY: Increment AFTER using the sequence number.\n // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n ++send_sequence_;\n\n return packet;\n}\n\nstd::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, fin,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n\n // Fragment the data.\n const std::uint64_t msg_id = message_id_counter_++;\n std::size_t offset = 0;\n std::uint64_t frag_seq = 0;\n\n while (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin;\n\n std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n\n // For fragmented messages, we use a special encoding in the sequence field.\n // High 32 bits: message ID, Low 32 bits: fragment index.\n const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n\n frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n\n offset += chunk_size;\n ++frag_seq;\n }\n\n return frames;\n}\n\n} // namespace veil::transport\n", | |
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| "- // No fragmentation needed.", | |
| "+ // No fragmentation needed. Always set fin=true to indicate complete message.", | |
| "+ // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.", | |
| " frames.push_back(mux::make_data_frame(", | |
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| "oldString": " const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin;", | |
| "newString": " const bool is_last = (offset + chunk_size >= data.size());\n // Issue #74: Always set fin=true on last fragment so receiver can detect message completion.\n // This enables proper fragment reassembly regardless of caller's fin parameter.\n const bool frag_fin = is_last;", | |
| "originalFile": "#include \"transport/session/transport_session.h\"\n\n#include <sodium.h>\n\n#include <algorithm>\n#include <cassert>\n#include <chrono>\n#include <cstdint>\n#include <limits>\n#include <optional>\n#include <span>\n#include <utility>\n#include <vector>\n\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/crypto/random.h\"\n#include \"common/logging/logger.h\"\n\n// SECURITY: Nonce overflow threshold.\n// With uint64_t, we can send 2^64 packets before overflow. At 10 Gbps with 1KB packets,\n// this would take over 58 million years. However, we set a conservative threshold to\n// detect any anomalies or implementation bugs that might cause rapid sequence growth.\n// This threshold triggers a warning well before any practical risk of overflow.\nconstexpr std::uint64_t kNonceOverflowWarningThreshold = std::numeric_limits<std::uint64_t>::max() - (1ULL << 32);\n\nnamespace veil::transport {\n\nTransportSession::TransportSession(const handshake::HandshakeSession& handshake_session,\n TransportSessionConfig config, std::function<TimePoint()> now_fn)\n : config_(config),\n now_fn_(std::move(now_fn)),\n keys_(handshake_session.keys),\n current_session_id_(handshake_session.session_id),\n send_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.send_key, keys_.send_nonce)),\n recv_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.recv_key, keys_.recv_nonce)),\n replay_window_(config_.replay_window_size),\n session_rotator_(config_.session_rotation_interval, config_.session_rotation_packets),\n reorder_buffer_(0, config_.reorder_buffer_size),\n fragment_reassembly_(config_.fragment_buffer_size),\n retransmit_buffer_(config_.retransmit_config, now_fn_) {\n // Enhanced diagnostic logging for session creation (Issue #69, #72)\n // Use INFO level so key fingerprints are always logged, not just in verbose mode\n // This helps diagnose key mismatch issues between client and server\n LOG_INFO(\"TransportSession created: session_id={}\", current_session_id_);\n LOG_INFO(\" send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_INFO(\" recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n LOG_INFO(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3],\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3]);\n}\n\nTransportSession::~TransportSession() {\n // SECURITY: Clear all session key material on destruction\n sodium_memzero(keys_.send_key.data(), keys_.send_key.size());\n sodium_memzero(keys_.recv_key.data(), keys_.recv_key.size());\n sodium_memzero(keys_.send_nonce.data(), keys_.send_nonce.size());\n sodium_memzero(keys_.recv_nonce.data(), keys_.recv_nonce.size());\n sodium_memzero(send_seq_obfuscation_key_.data(), send_seq_obfuscation_key_.size());\n sodium_memzero(recv_seq_obfuscation_key_.data(), recv_seq_obfuscation_key_.size());\n LOG_DEBUG(\"TransportSession destroyed, keys cleared\");\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::encrypt_data(\n std::span<const std::uint8_t> plaintext, std::uint64_t stream_id, bool fin) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n\n // Fragment data if necessary.\n auto frames = fragment_data(plaintext, stream_id, fin);\n\n for (auto& frame : frames) {\n auto encrypted = build_encrypted_packet(frame);\n\n // Store in retransmit buffer.\n if (retransmit_buffer_.has_capacity(encrypted.size())) {\n retransmit_buffer_.insert(send_sequence_ - 1, encrypted);\n }\n\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n if (frame.kind == mux::FrameKind::kData) {\n ++stats_.fragments_sent;\n }\n\n result.push_back(std::move(encrypted));\n ++packets_since_rotation_;\n }\n\n return result;\n}\n\nstd::vector<std::uint8_t> TransportSession::encrypt_frame(const mux::MuxFrame& frame) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Use the existing build_encrypted_packet method which properly encrypts any frame type.\n // This preserves the frame's original kind (ACK, control, heartbeat, etc.) without wrapping\n // it in a DATA frame like encrypt_data() does.\n auto encrypted = build_encrypted_packet(frame);\n\n // Update statistics for non-data frames (data frame stats are updated in encrypt_data)\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n ++packets_since_rotation_;\n\n return encrypted;\n}\n\nstd::optional<std::vector<mux::MuxFrame>> TransportSession::decrypt_packet(\n std::span<const std::uint8_t> ciphertext) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Minimum packet size: nonce (8 bytes for sequence) + tag (16 bytes) + header (1 byte minimum)\n constexpr std::size_t kMinPacketSize = 8 + 16 + 1;\n if (ciphertext.size() < kMinPacketSize) {\n LOG_DEBUG(\"Packet too small: {} bytes\", ciphertext.size());\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Extract obfuscated sequence from first 8 bytes.\n std::uint64_t obfuscated_sequence = 0;\n for (int i = 0; i < 8; ++i) {\n obfuscated_sequence = (obfuscated_sequence << 8) | ciphertext[static_cast<std::size_t>(i)];\n }\n\n // DPI RESISTANCE (Issue #21): Deobfuscate sequence number.\n // The sender obfuscated the sequence to prevent traffic analysis. We reverse the\n // obfuscation here to recover the real sequence for nonce derivation and replay checking.\n const std::uint64_t sequence = crypto::deobfuscate_sequence(obfuscated_sequence, recv_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for decryption debugging (Issue #69, #72)\n // Use WARN level temporarily to trace decryption flow in production\n LOG_WARN(\"Decrypt attempt: session_id={}, pkt_size={}, obfuscated_seq={:#018x}, deobfuscated_seq={}\",\n current_session_id_, ciphertext.size(), obfuscated_sequence, sequence);\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_8_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n\n // Replay check.\n if (!replay_window_.mark_and_check(sequence)) {\n LOG_WARN(\"Packet replay detected or out of window: sequence={}, highest={}\",\n sequence, replay_window_.highest());\n ++stats_.packets_dropped_replay;\n return std::nullopt;\n }\n LOG_WARN(\"Replay check passed, proceeding to decryption\");\n\n // Derive nonce from sequence.\n const auto nonce = crypto::derive_nonce(keys_.recv_nonce, sequence);\n\n // Decrypt (skip sequence prefix).\n auto ciphertext_body = ciphertext.subspan(8);\n auto decrypted = crypto::aead_decrypt(keys_.recv_key, nonce, {}, ciphertext_body);\n if (!decrypted) {\n // Enhanced error logging for decryption failures (Issue #69, #72)\n // Use WARN level so this always appears, not just in verbose mode\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch issues\n LOG_WARN(\"Decryption FAILED: session_id={}, sequence={}, ciphertext_size={}, \"\n \"recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, sequence, ciphertext_body.size(),\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n // Also log the obfuscation key fingerprint and packet header\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_pkt_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Enhanced diagnostic logging for decryption success (Issue #72)\n LOG_WARN(\"Decryption SUCCESS: session_id={}, sequence={}, decrypted_size={}\",\n current_session_id_, sequence, decrypted->size());\n\n ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n auto to_retransmit = retransmit_buffer_.get_packets_to_retransmit();\n\n for (const auto* pkt : to_retransmit) {\n if (retransmit_buffer_.mark_retransmitted(pkt->sequence)) {\n result.push_back(pkt->data);\n ++stats_.retransmits;\n } else {\n // Exceeded max retries, drop packet.\n retransmit_buffer_.drop_packet(pkt->sequence);\n }\n }\n\n return result;\n}\n\nvoid TransportSession::process_ack(const mux::AckFrame& ack) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Debug logging for ACK processing (Issue #72)\n LOG_WARN(\"process_ack called: stream_id={}, ack={}, bitmap={:#010x}, pending_before={}\",\n ack.stream_id, ack.ack, ack.bitmap, retransmit_buffer_.pending_count());\n\n // Cumulative ACK.\n retransmit_buffer_.acknowledge_cumulative(ack.ack);\n\n // Selective ACK from bitmap.\n for (std::uint32_t i = 0; i < 32; ++i) {\n if (((ack.bitmap >> i) & 1U) != 0U) {\n std::uint64_t seq = ack.ack - 1 - i;\n if (seq > 0) {\n retransmit_buffer_.acknowledge(seq);\n }\n }\n }\n\n // Debug logging for ACK processing result (Issue #72)\n LOG_WARN(\"process_ack done: pending_after={}\", retransmit_buffer_.pending_count());\n}\n\nmux::AckFrame TransportSession::generate_ack(std::uint64_t stream_id) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n return mux::AckFrame{\n .stream_id = stream_id,\n .ack = recv_ack_bitmap_.head(),\n .bitmap = recv_ack_bitmap_.bitmap(),\n };\n}\n\nbool TransportSession::should_rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n return session_rotator_.should_rotate(packets_since_rotation_, now_fn_());\n}\n\nvoid TransportSession::rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // SECURITY: Capture sequence number before rotation for verification\n [[maybe_unused]] const auto sequence_before_rotation = send_sequence_;\n\n current_session_id_ = session_rotator_.rotate(now_fn_());\n packets_since_rotation_ = 0;\n ++stats_.session_rotations;\n\n // ===========================================================================\n // SECURITY-CRITICAL: NONCE COUNTER LIFECYCLE\n // ===========================================================================\n // The nonce for ChaCha20-Poly1305 is derived as:\n // nonce = derive_nonce(base_nonce, send_sequence_)\n //\n // Where derive_nonce XORs the counter into the last 8 bytes of base_nonce.\n //\n // CRITICAL INVARIANT: send_sequence_ MUST NEVER be reset.\n //\n // Why this matters:\n // - ChaCha20-Poly1305 security completely breaks if the same (key, nonce) pair\n // is ever used twice\n // - The encryption key (keys_.send_key) is derived once during handshake and\n // does NOT change during session rotation\n // - Session rotation only changes the session_id for protocol-level management\n //\n // Nonce uniqueness guarantee:\n // - send_sequence_ is uint64_t, allowing 2^64 unique nonces\n // - At 10 Gbps with 1KB packets, exhaustion would take ~58 million years\n // - send_sequence_ is incremented after each packet in build_encrypted_packet()\n // - It is NEVER reset or decremented\n //\n // This design was chosen over alternatives like:\n // - Rotating keys on session rotation: Would require re-handshake or key derivation\n // - Resetting counter with new base_nonce: Adds complexity, risk of implementation bugs\n // - Using random nonces: Requires tracking to prevent collisions (birthday bound)\n //\n // See also: Issue #3 - Verify nonce counter lifecycle on session rotation\n // ===========================================================================\n\n // ASSERTION: Verify send_sequence_ was not reset (defense in depth)\n assert(send_sequence_ == sequence_before_rotation &&\n \"SECURITY VIOLATION: send_sequence_ must never be reset during rotation\");\n\n LOG_DEBUG(\"Session rotated to session_id={}, send_sequence_={} (unchanged)\",\n current_session_id_, send_sequence_);\n}\n\nstd::vector<std::uint8_t> TransportSession::build_encrypted_packet(const mux::MuxFrame& frame) {\n // SECURITY: Check for sequence number overflow (extremely unlikely but provides defense in depth)\n // At 10 Gbps with 1KB packets, reaching this threshold would take millions of years,\n // but we check anyway to catch any implementation bugs that might cause unexpected growth.\n if (send_sequence_ >= kNonceOverflowWarningThreshold) {\n LOG_ERROR(\"SECURITY WARNING: send_sequence_ approaching overflow (current={}). \"\n \"Session should be re-established to prevent nonce reuse.\",\n send_sequence_);\n // Note: We log but continue - in practice this is unreachable under normal operation.\n // A production system might want to force session termination here.\n }\n\n // Serialize the frame.\n auto plaintext = mux::MuxCodec::encode(frame);\n\n // Derive nonce from current send sequence.\n // SECURITY: Each packet gets a unique nonce = base_nonce XOR send_sequence_\n // Since send_sequence_ is never reset and always increments, nonces are guaranteed unique.\n const auto nonce = crypto::derive_nonce(keys_.send_nonce, send_sequence_);\n\n // Encrypt using ChaCha20-Poly1305 AEAD.\n auto ciphertext = crypto::aead_encrypt(keys_.send_key, nonce, {}, plaintext);\n\n // DPI RESISTANCE (Issue #21): Obfuscate sequence number before transmission.\n // Previously, the sequence was sent in plaintext, creating a DPI signature (monotonically\n // increasing values). Now we obfuscate it using ChaCha20 with a session-specific key.\n // The receiver can deobfuscate using the same key to recover the sequence for nonce derivation.\n const std::uint64_t obfuscated_sequence = crypto::obfuscate_sequence(send_sequence_, send_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for encryption (Issue #69)\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch between client and server\n LOG_DEBUG(\"Encrypt: session_id={}, sequence={}, obfuscated_seq={:#018x}, plaintext_size={}, \"\n \"send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, send_sequence_, obfuscated_sequence, plaintext.size(),\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_DEBUG(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3]);\n\n // Prepend obfuscated sequence number (8 bytes big-endian).\n std::vector<std::uint8_t> packet;\n packet.reserve(8 + ciphertext.size());\n for (int i = 7; i >= 0; --i) {\n packet.push_back(static_cast<std::uint8_t>((obfuscated_sequence >> (8 * i)) & 0xFF));\n }\n packet.insert(packet.end(), ciphertext.begin(), ciphertext.end());\n\n // SECURITY: Increment AFTER using the sequence number.\n // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n ++send_sequence_;\n\n return packet;\n}\n\nstd::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed. Always set fin=true to indicate complete message.\n // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, true,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n\n // Fragment the data.\n const std::uint64_t msg_id = message_id_counter_++;\n std::size_t offset = 0;\n std::uint64_t frag_seq = 0;\n\n while (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n const bool frag_fin = is_last && fin;\n\n std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n\n // For fragmented messages, we use a special encoding in the sequence field.\n // High 32 bits: message ID, Low 32 bits: fragment index.\n const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n\n frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n\n offset += chunk_size;\n ++frag_seq;\n }\n\n return frames;\n}\n\n} // namespace veil::transport\n", | |
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| " while (offset < data.size()) {", | |
| " const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);", | |
| " const bool is_last = (offset + chunk_size >= data.size());", | |
| "- const bool frag_fin = is_last && fin;", | |
| "+ // Issue #74: Always set fin=true on last fragment so receiver can detect message completion.", | |
| "+ // This enables proper fragment reassembly regardless of caller's fin parameter.", | |
| "+ const bool frag_fin = is_last;", | |
| " ", | |
| " std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),", | |
| " data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));" | |
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| "text": "Now I need to update the `decrypt_packet` function to use fragment reassembly. Let me read the relevant section again:" | |
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| [2026-01-28T20:09:15.565Z] [INFO] { | |
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| "content": " 185→\n 186→ ++stats_.packets_received;\n 187→ stats_.bytes_received += ciphertext.size();\n 188→\n 189→ // Parse mux frames from decrypted data.\n 190→ std::vector<mux::MuxFrame> frames;\n 191→ auto frame = mux::MuxCodec::decode(*decrypted);\n 192→ if (frame) {\n 193→ // Log frame details for debugging (Issue #72)\n 194→ LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n 195→ static_cast<int>(frame->kind),\n 196→ frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n 197→ frames.push_back(std::move(*frame));\n 198→\n 199→ if (frame->kind == mux::FrameKind::kData) {\n 200→ ++stats_.fragments_received;\n 201→ recv_ack_bitmap_.ack(sequence);\n 202→ }\n 203→ } else {\n 204→ // Log frame decode failure for debugging (Issue #72)\n 205→ LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n 206→ decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n 207→ }\n 208→\n 209→ if (sequence > recv_sequence_max_) {\n 210→ recv_sequence_max_ = sequence;\n 211→ }\n 212→\n 213→ return frames;\n 214→}\n 215→\n 216→std::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n 217→ VEIL_DCHECK_THREAD(thread_checker_);\n 218→\n 219→ std::vector<std::vector<std::uint8_t>> result;\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": "\n ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;", | |
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| [2026-01-28T20:09:20.048Z] [INFO] { | |
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| "text": "Now I need to implement the fragment reassembly logic. Looking at the frame structure, I need to:\n\n1. Check if this is a data frame\n2. If sequence's high 32 bits are non-zero (msg_id >= 1) OR if fin=false (might be fragment of msg_id=0), it's potentially a fragment\n3. Use fragment_reassembly_ to accumulate and reassemble\n\nLet me implement the fix:" | |
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| [2026-01-28T20:09:41.456Z] [INFO] { | |
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| "old_string": " ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}", | |
| "new_string": " ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n\n // Issue #74: Fragment reassembly\n // For fragmented messages, sequence is encoded as (msg_id << 32) | frag_idx.\n // For non-fragmented messages (or first fragment of msg_id=0), we detect by fin flag.\n // - If fin=true: complete message, return directly\n // - If fin=false: fragment, accumulate and try reassembly\n const std::uint64_t frame_seq = frame->data.sequence;\n const std::uint64_t msg_id = frame_seq >> 32;\n const std::uint32_t frag_idx = static_cast<std::uint32_t>(frame_seq & 0xFFFFFFFF);\n\n // Determine if this is a fragment vs complete message:\n // - msg_id > 0 means sequence >= 2^32, definitely a fragment\n // - msg_id == 0 with fin=false could be first fragment of message 0\n // - msg_id == 0 with fin=true and frag_idx == 0 is a complete non-fragmented message\n const bool is_fragment = (msg_id > 0) || !frame->data.fin;\n\n if (is_fragment) {\n // This is a fragment - push to reassembly buffer\n // For fragments, use msg_id as the message identifier\n // If msg_id==0, we use the sequence directly since frag_idx distinguishes fragments\n const std::uint64_t reassembly_id = (msg_id > 0) ? msg_id : 0;\n\n // Calculate offset from fragment index\n // We track cumulative size per message to compute offsets\n // For simplicity, use frag_idx as offset (works when fragments arrive in order)\n // TODO: For out-of-order fragments, we'd need more sophisticated tracking\n mux::Fragment frag{\n .offset = static_cast<std::uint16_t>(frag_idx * config_.max_fragment_size),\n .data = std::move(frame->data.payload),\n .last = frame->data.fin};\n\n LOG_WARN(\" Fragment: msg_id={}, frag_idx={}, offset={}, size={}, last={}\",\n msg_id, frag_idx, frag.offset, frag.data.size(), frag.last);\n\n fragment_reassembly_.push(reassembly_id, std::move(frag), now_fn_());\n\n // Try to reassemble the complete message\n auto reassembled = fragment_reassembly_.try_reassemble(reassembly_id);\n if (reassembled) {\n // Successfully reassembled - create a new data frame with complete payload\n LOG_WARN(\" Reassembled complete message: msg_id={}, size={}\", msg_id, reassembled->size());\n ++stats_.messages_reassembled;\n\n mux::MuxFrame complete_frame{};\n complete_frame.kind = mux::FrameKind::kData;\n complete_frame.data.stream_id = frame->data.stream_id;\n complete_frame.data.sequence = frame_seq; // Use original sequence\n complete_frame.data.fin = true;\n complete_frame.data.payload = std::move(*reassembled);\n frames.push_back(std::move(complete_frame));\n }\n // If not yet complete, don't add to frames - wait for more fragments\n } else {\n // Complete non-fragmented message - return directly\n LOG_WARN(\" Complete message: sequence={}, size={}\", frame_seq, frame->data.payload.size());\n frames.push_back(std::move(*frame));\n }\n } else {\n // Non-data frames (ACK, control, heartbeat) - return directly\n frames.push_back(std::move(*frame));\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}" | |
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| "content": "The file /tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp has been updated successfully." | |
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| "oldString": " ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}", | |
| "newString": " ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n\n // Issue #74: Fragment reassembly\n // For fragmented messages, sequence is encoded as (msg_id << 32) | frag_idx.\n // For non-fragmented messages (or first fragment of msg_id=0), we detect by fin flag.\n // - If fin=true: complete message, return directly\n // - If fin=false: fragment, accumulate and try reassembly\n const std::uint64_t frame_seq = frame->data.sequence;\n const std::uint64_t msg_id = frame_seq >> 32;\n const std::uint32_t frag_idx = static_cast<std::uint32_t>(frame_seq & 0xFFFFFFFF);\n\n // Determine if this is a fragment vs complete message:\n // - msg_id > 0 means sequence >= 2^32, definitely a fragment\n // - msg_id == 0 with fin=false could be first fragment of message 0\n // - msg_id == 0 with fin=true and frag_idx == 0 is a complete non-fragmented message\n const bool is_fragment = (msg_id > 0) || !frame->data.fin;\n\n if (is_fragment) {\n // This is a fragment - push to reassembly buffer\n // For fragments, use msg_id as the message identifier\n // If msg_id==0, we use the sequence directly since frag_idx distinguishes fragments\n const std::uint64_t reassembly_id = (msg_id > 0) ? msg_id : 0;\n\n // Calculate offset from fragment index\n // We track cumulative size per message to compute offsets\n // For simplicity, use frag_idx as offset (works when fragments arrive in order)\n // TODO: For out-of-order fragments, we'd need more sophisticated tracking\n mux::Fragment frag{\n .offset = static_cast<std::uint16_t>(frag_idx * config_.max_fragment_size),\n .data = std::move(frame->data.payload),\n .last = frame->data.fin};\n\n LOG_WARN(\" Fragment: msg_id={}, frag_idx={}, offset={}, size={}, last={}\",\n msg_id, frag_idx, frag.offset, frag.data.size(), frag.last);\n\n fragment_reassembly_.push(reassembly_id, std::move(frag), now_fn_());\n\n // Try to reassemble the complete message\n auto reassembled = fragment_reassembly_.try_reassemble(reassembly_id);\n if (reassembled) {\n // Successfully reassembled - create a new data frame with complete payload\n LOG_WARN(\" Reassembled complete message: msg_id={}, size={}\", msg_id, reassembled->size());\n ++stats_.messages_reassembled;\n\n mux::MuxFrame complete_frame{};\n complete_frame.kind = mux::FrameKind::kData;\n complete_frame.data.stream_id = frame->data.stream_id;\n complete_frame.data.sequence = frame_seq; // Use original sequence\n complete_frame.data.fin = true;\n complete_frame.data.payload = std::move(*reassembled);\n frames.push_back(std::move(complete_frame));\n }\n // If not yet complete, don't add to frames - wait for more fragments\n } else {\n // Complete non-fragmented message - return directly\n LOG_WARN(\" Complete message: sequence={}, size={}\", frame_seq, frame->data.payload.size());\n frames.push_back(std::move(*frame));\n }\n } else {\n // Non-data frames (ACK, control, heartbeat) - return directly\n frames.push_back(std::move(*frame));\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}", | |
| "originalFile": "#include \"transport/session/transport_session.h\"\n\n#include <sodium.h>\n\n#include <algorithm>\n#include <cassert>\n#include <chrono>\n#include <cstdint>\n#include <limits>\n#include <optional>\n#include <span>\n#include <utility>\n#include <vector>\n\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/crypto/random.h\"\n#include \"common/logging/logger.h\"\n\n// SECURITY: Nonce overflow threshold.\n// With uint64_t, we can send 2^64 packets before overflow. At 10 Gbps with 1KB packets,\n// this would take over 58 million years. However, we set a conservative threshold to\n// detect any anomalies or implementation bugs that might cause rapid sequence growth.\n// This threshold triggers a warning well before any practical risk of overflow.\nconstexpr std::uint64_t kNonceOverflowWarningThreshold = std::numeric_limits<std::uint64_t>::max() - (1ULL << 32);\n\nnamespace veil::transport {\n\nTransportSession::TransportSession(const handshake::HandshakeSession& handshake_session,\n TransportSessionConfig config, std::function<TimePoint()> now_fn)\n : config_(config),\n now_fn_(std::move(now_fn)),\n keys_(handshake_session.keys),\n current_session_id_(handshake_session.session_id),\n send_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.send_key, keys_.send_nonce)),\n recv_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.recv_key, keys_.recv_nonce)),\n replay_window_(config_.replay_window_size),\n session_rotator_(config_.session_rotation_interval, config_.session_rotation_packets),\n reorder_buffer_(0, config_.reorder_buffer_size),\n fragment_reassembly_(config_.fragment_buffer_size),\n retransmit_buffer_(config_.retransmit_config, now_fn_) {\n // Enhanced diagnostic logging for session creation (Issue #69, #72)\n // Use INFO level so key fingerprints are always logged, not just in verbose mode\n // This helps diagnose key mismatch issues between client and server\n LOG_INFO(\"TransportSession created: session_id={}\", current_session_id_);\n LOG_INFO(\" send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_INFO(\" recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n LOG_INFO(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3],\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3]);\n}\n\nTransportSession::~TransportSession() {\n // SECURITY: Clear all session key material on destruction\n sodium_memzero(keys_.send_key.data(), keys_.send_key.size());\n sodium_memzero(keys_.recv_key.data(), keys_.recv_key.size());\n sodium_memzero(keys_.send_nonce.data(), keys_.send_nonce.size());\n sodium_memzero(keys_.recv_nonce.data(), keys_.recv_nonce.size());\n sodium_memzero(send_seq_obfuscation_key_.data(), send_seq_obfuscation_key_.size());\n sodium_memzero(recv_seq_obfuscation_key_.data(), recv_seq_obfuscation_key_.size());\n LOG_DEBUG(\"TransportSession destroyed, keys cleared\");\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::encrypt_data(\n std::span<const std::uint8_t> plaintext, std::uint64_t stream_id, bool fin) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n\n // Fragment data if necessary.\n auto frames = fragment_data(plaintext, stream_id, fin);\n\n for (auto& frame : frames) {\n auto encrypted = build_encrypted_packet(frame);\n\n // Store in retransmit buffer.\n if (retransmit_buffer_.has_capacity(encrypted.size())) {\n retransmit_buffer_.insert(send_sequence_ - 1, encrypted);\n }\n\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n if (frame.kind == mux::FrameKind::kData) {\n ++stats_.fragments_sent;\n }\n\n result.push_back(std::move(encrypted));\n ++packets_since_rotation_;\n }\n\n return result;\n}\n\nstd::vector<std::uint8_t> TransportSession::encrypt_frame(const mux::MuxFrame& frame) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Use the existing build_encrypted_packet method which properly encrypts any frame type.\n // This preserves the frame's original kind (ACK, control, heartbeat, etc.) without wrapping\n // it in a DATA frame like encrypt_data() does.\n auto encrypted = build_encrypted_packet(frame);\n\n // Update statistics for non-data frames (data frame stats are updated in encrypt_data)\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n ++packets_since_rotation_;\n\n return encrypted;\n}\n\nstd::optional<std::vector<mux::MuxFrame>> TransportSession::decrypt_packet(\n std::span<const std::uint8_t> ciphertext) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Minimum packet size: nonce (8 bytes for sequence) + tag (16 bytes) + header (1 byte minimum)\n constexpr std::size_t kMinPacketSize = 8 + 16 + 1;\n if (ciphertext.size() < kMinPacketSize) {\n LOG_DEBUG(\"Packet too small: {} bytes\", ciphertext.size());\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Extract obfuscated sequence from first 8 bytes.\n std::uint64_t obfuscated_sequence = 0;\n for (int i = 0; i < 8; ++i) {\n obfuscated_sequence = (obfuscated_sequence << 8) | ciphertext[static_cast<std::size_t>(i)];\n }\n\n // DPI RESISTANCE (Issue #21): Deobfuscate sequence number.\n // The sender obfuscated the sequence to prevent traffic analysis. We reverse the\n // obfuscation here to recover the real sequence for nonce derivation and replay checking.\n const std::uint64_t sequence = crypto::deobfuscate_sequence(obfuscated_sequence, recv_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for decryption debugging (Issue #69, #72)\n // Use WARN level temporarily to trace decryption flow in production\n LOG_WARN(\"Decrypt attempt: session_id={}, pkt_size={}, obfuscated_seq={:#018x}, deobfuscated_seq={}\",\n current_session_id_, ciphertext.size(), obfuscated_sequence, sequence);\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_8_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n\n // Replay check.\n if (!replay_window_.mark_and_check(sequence)) {\n LOG_WARN(\"Packet replay detected or out of window: sequence={}, highest={}\",\n sequence, replay_window_.highest());\n ++stats_.packets_dropped_replay;\n return std::nullopt;\n }\n LOG_WARN(\"Replay check passed, proceeding to decryption\");\n\n // Derive nonce from sequence.\n const auto nonce = crypto::derive_nonce(keys_.recv_nonce, sequence);\n\n // Decrypt (skip sequence prefix).\n auto ciphertext_body = ciphertext.subspan(8);\n auto decrypted = crypto::aead_decrypt(keys_.recv_key, nonce, {}, ciphertext_body);\n if (!decrypted) {\n // Enhanced error logging for decryption failures (Issue #69, #72)\n // Use WARN level so this always appears, not just in verbose mode\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch issues\n LOG_WARN(\"Decryption FAILED: session_id={}, sequence={}, ciphertext_size={}, \"\n \"recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, sequence, ciphertext_body.size(),\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n // Also log the obfuscation key fingerprint and packet header\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_pkt_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Enhanced diagnostic logging for decryption success (Issue #72)\n LOG_WARN(\"Decryption SUCCESS: session_id={}, sequence={}, decrypted_size={}\",\n current_session_id_, sequence, decrypted->size());\n\n ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n frames.push_back(std::move(*frame));\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n auto to_retransmit = retransmit_buffer_.get_packets_to_retransmit();\n\n for (const auto* pkt : to_retransmit) {\n if (retransmit_buffer_.mark_retransmitted(pkt->sequence)) {\n result.push_back(pkt->data);\n ++stats_.retransmits;\n } else {\n // Exceeded max retries, drop packet.\n retransmit_buffer_.drop_packet(pkt->sequence);\n }\n }\n\n return result;\n}\n\nvoid TransportSession::process_ack(const mux::AckFrame& ack) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Debug logging for ACK processing (Issue #72)\n LOG_WARN(\"process_ack called: stream_id={}, ack={}, bitmap={:#010x}, pending_before={}\",\n ack.stream_id, ack.ack, ack.bitmap, retransmit_buffer_.pending_count());\n\n // Cumulative ACK.\n retransmit_buffer_.acknowledge_cumulative(ack.ack);\n\n // Selective ACK from bitmap.\n for (std::uint32_t i = 0; i < 32; ++i) {\n if (((ack.bitmap >> i) & 1U) != 0U) {\n std::uint64_t seq = ack.ack - 1 - i;\n if (seq > 0) {\n retransmit_buffer_.acknowledge(seq);\n }\n }\n }\n\n // Debug logging for ACK processing result (Issue #72)\n LOG_WARN(\"process_ack done: pending_after={}\", retransmit_buffer_.pending_count());\n}\n\nmux::AckFrame TransportSession::generate_ack(std::uint64_t stream_id) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n return mux::AckFrame{\n .stream_id = stream_id,\n .ack = recv_ack_bitmap_.head(),\n .bitmap = recv_ack_bitmap_.bitmap(),\n };\n}\n\nbool TransportSession::should_rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n return session_rotator_.should_rotate(packets_since_rotation_, now_fn_());\n}\n\nvoid TransportSession::rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // SECURITY: Capture sequence number before rotation for verification\n [[maybe_unused]] const auto sequence_before_rotation = send_sequence_;\n\n current_session_id_ = session_rotator_.rotate(now_fn_());\n packets_since_rotation_ = 0;\n ++stats_.session_rotations;\n\n // ===========================================================================\n // SECURITY-CRITICAL: NONCE COUNTER LIFECYCLE\n // ===========================================================================\n // The nonce for ChaCha20-Poly1305 is derived as:\n // nonce = derive_nonce(base_nonce, send_sequence_)\n //\n // Where derive_nonce XORs the counter into the last 8 bytes of base_nonce.\n //\n // CRITICAL INVARIANT: send_sequence_ MUST NEVER be reset.\n //\n // Why this matters:\n // - ChaCha20-Poly1305 security completely breaks if the same (key, nonce) pair\n // is ever used twice\n // - The encryption key (keys_.send_key) is derived once during handshake and\n // does NOT change during session rotation\n // - Session rotation only changes the session_id for protocol-level management\n //\n // Nonce uniqueness guarantee:\n // - send_sequence_ is uint64_t, allowing 2^64 unique nonces\n // - At 10 Gbps with 1KB packets, exhaustion would take ~58 million years\n // - send_sequence_ is incremented after each packet in build_encrypted_packet()\n // - It is NEVER reset or decremented\n //\n // This design was chosen over alternatives like:\n // - Rotating keys on session rotation: Would require re-handshake or key derivation\n // - Resetting counter with new base_nonce: Adds complexity, risk of implementation bugs\n // - Using random nonces: Requires tracking to prevent collisions (birthday bound)\n //\n // See also: Issue #3 - Verify nonce counter lifecycle on session rotation\n // ===========================================================================\n\n // ASSERTION: Verify send_sequence_ was not reset (defense in depth)\n assert(send_sequence_ == sequence_before_rotation &&\n \"SECURITY VIOLATION: send_sequence_ must never be reset during rotation\");\n\n LOG_DEBUG(\"Session rotated to session_id={}, send_sequence_={} (unchanged)\",\n current_session_id_, send_sequence_);\n}\n\nstd::vector<std::uint8_t> TransportSession::build_encrypted_packet(const mux::MuxFrame& frame) {\n // SECURITY: Check for sequence number overflow (extremely unlikely but provides defense in depth)\n // At 10 Gbps with 1KB packets, reaching this threshold would take millions of years,\n // but we check anyway to catch any implementation bugs that might cause unexpected growth.\n if (send_sequence_ >= kNonceOverflowWarningThreshold) {\n LOG_ERROR(\"SECURITY WARNING: send_sequence_ approaching overflow (current={}). \"\n \"Session should be re-established to prevent nonce reuse.\",\n send_sequence_);\n // Note: We log but continue - in practice this is unreachable under normal operation.\n // A production system might want to force session termination here.\n }\n\n // Serialize the frame.\n auto plaintext = mux::MuxCodec::encode(frame);\n\n // Derive nonce from current send sequence.\n // SECURITY: Each packet gets a unique nonce = base_nonce XOR send_sequence_\n // Since send_sequence_ is never reset and always increments, nonces are guaranteed unique.\n const auto nonce = crypto::derive_nonce(keys_.send_nonce, send_sequence_);\n\n // Encrypt using ChaCha20-Poly1305 AEAD.\n auto ciphertext = crypto::aead_encrypt(keys_.send_key, nonce, {}, plaintext);\n\n // DPI RESISTANCE (Issue #21): Obfuscate sequence number before transmission.\n // Previously, the sequence was sent in plaintext, creating a DPI signature (monotonically\n // increasing values). Now we obfuscate it using ChaCha20 with a session-specific key.\n // The receiver can deobfuscate using the same key to recover the sequence for nonce derivation.\n const std::uint64_t obfuscated_sequence = crypto::obfuscate_sequence(send_sequence_, send_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for encryption (Issue #69)\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch between client and server\n LOG_DEBUG(\"Encrypt: session_id={}, sequence={}, obfuscated_seq={:#018x}, plaintext_size={}, \"\n \"send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, send_sequence_, obfuscated_sequence, plaintext.size(),\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_DEBUG(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3]);\n\n // Prepend obfuscated sequence number (8 bytes big-endian).\n std::vector<std::uint8_t> packet;\n packet.reserve(8 + ciphertext.size());\n for (int i = 7; i >= 0; --i) {\n packet.push_back(static_cast<std::uint8_t>((obfuscated_sequence >> (8 * i)) & 0xFF));\n }\n packet.insert(packet.end(), ciphertext.begin(), ciphertext.end());\n\n // SECURITY: Increment AFTER using the sequence number.\n // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n ++send_sequence_;\n\n return packet;\n}\n\nstd::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed. Always set fin=true to indicate complete message.\n // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, true,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n\n // Fragment the data.\n const std::uint64_t msg_id = message_id_counter_++;\n std::size_t offset = 0;\n std::uint64_t frag_seq = 0;\n\n while (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n // Issue #74: Always set fin=true on last fragment so receiver can detect message completion.\n // This enables proper fragment reassembly regardless of caller's fin parameter.\n const bool frag_fin = is_last;\n\n std::vector<std::uint8_t> chunk(data.begin() + static_cast<std::ptrdiff_t>(offset),\n data.begin() + static_cast<std::ptrdiff_t>(offset + chunk_size));\n\n // For fragmented messages, we use a special encoding in the sequence field.\n // High 32 bits: message ID, Low 32 bits: fragment index.\n const std::uint64_t encoded_seq = (msg_id << 32) | frag_seq;\n\n frames.push_back(mux::make_data_frame(stream_id, encoded_seq, frag_fin, std::move(chunk)));\n\n offset += chunk_size;\n ++frag_seq;\n }\n\n return frames;\n}\n\n} // namespace veil::transport\n", | |
| "structuredPatch": [ | |
| { | |
| "oldStart": 194, | |
| "oldLines": 11, | |
| "newStart": 194, | |
| "newLines": 70, | |
| "lines": [ | |
| " LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",", | |
| " static_cast<int>(frame->kind),", | |
| " frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);", | |
| "- frames.push_back(std::move(*frame));", | |
| " ", | |
| " if (frame->kind == mux::FrameKind::kData) {", | |
| " ++stats_.fragments_received;", | |
| " recv_ack_bitmap_.ack(sequence);", | |
| "+", | |
| "+ // Issue #74: Fragment reassembly", | |
| "+ // For fragmented messages, sequence is encoded as (msg_id << 32) | frag_idx.", | |
| "+ // For non-fragmented messages (or first fragment of msg_id=0), we detect by fin flag.", | |
| "+ // - If fin=true: complete message, return directly", | |
| "+ // - If fin=false: fragment, accumulate and try reassembly", | |
| "+ const std::uint64_t frame_seq = frame->data.sequence;", | |
| "+ const std::uint64_t msg_id = frame_seq >> 32;", | |
| "+ const std::uint32_t frag_idx = static_cast<std::uint32_t>(frame_seq & 0xFFFFFFFF);", | |
| "+", | |
| "+ // Determine if this is a fragment vs complete message:", | |
| "+ // - msg_id > 0 means sequence >= 2^32, definitely a fragment", | |
| "+ // - msg_id == 0 with fin=false could be first fragment of message 0", | |
| "+ // - msg_id == 0 with fin=true and frag_idx == 0 is a complete non-fragmented message", | |
| "+ const bool is_fragment = (msg_id > 0) || !frame->data.fin;", | |
| "+", | |
| "+ if (is_fragment) {", | |
| "+ // This is a fragment - push to reassembly buffer", | |
| "+ // For fragments, use msg_id as the message identifier", | |
| "+ // If msg_id==0, we use the sequence directly since frag_idx distinguishes fragments", | |
| "+ const std::uint64_t reassembly_id = (msg_id > 0) ? msg_id : 0;", | |
| "+", | |
| "+ // Calculate offset from fragment index", | |
| "+ // We track cumulative size per message to compute offsets", | |
| "+ // For simplicity, use frag_idx as offset (works when fragments arrive in order)", | |
| "+ // TODO: For out-of-order fragments, we'd need more sophisticated tracking", | |
| "+ mux::Fragment frag{", | |
| "+ .offset = static_cast<std::uint16_t>(frag_idx * config_.max_fragment_size),", | |
| "+ .data = std::move(frame->data.payload),", | |
| "+ .last = frame->data.fin};", | |
| "+", | |
| "+ LOG_WARN(\" Fragment: msg_id={}, frag_idx={}, offset={}, size={}, last={}\",", | |
| "+ msg_id, frag_idx, frag.offset, frag.data.size(), frag.last);", | |
| "+", | |
| "+ fragment_reassembly_.push(reassembly_id, std::move(frag), now_fn_());", | |
| "+", | |
| "+ // Try to reassemble the complete message", | |
| "+ auto reassembled = fragment_reassembly_.try_reassemble(reassembly_id);", | |
| "+ if (reassembled) {", | |
| "+ // Successfully reassembled - create a new data frame with complete payload", | |
| "+ LOG_WARN(\" Reassembled complete message: msg_id={}, size={}\", msg_id, reassembled->size());", | |
| "+ ++stats_.messages_reassembled;", | |
| "+", | |
| "+ mux::MuxFrame complete_frame{};", | |
| "+ complete_frame.kind = mux::FrameKind::kData;", | |
| "+ complete_frame.data.stream_id = frame->data.stream_id;", | |
| "+ complete_frame.data.sequence = frame_seq; // Use original sequence", | |
| "+ complete_frame.data.fin = true;", | |
| "+ complete_frame.data.payload = std::move(*reassembled);", | |
| "+ frames.push_back(std::move(complete_frame));", | |
| "+ }", | |
| "+ // If not yet complete, don't add to frames - wait for more fragments", | |
| "+ } else {", | |
| "+ // Complete non-fragmented message - return directly", | |
| "+ LOG_WARN(\" Complete message: sequence={}, size={}\", frame_seq, frame->data.payload.size());", | |
| "+ frames.push_back(std::move(*frame));", | |
| "+ }", | |
| "+ } else {", | |
| "+ // Non-data frames (ACK, control, heartbeat) - return directly", | |
| "+ frames.push_back(std::move(*frame));", | |
| " }", | |
| " } else {", | |
| " // Log frame decode failure for debugging (Issue #72)" | |
| ] | |
| } | |
| ], | |
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| } | |
| } | |
| [2026-01-28T20:09:44.232Z] [INFO] { | |
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| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01SWUJ4UximQCkee1MMNF8LK", | |
| "type": "message", | |
| "role": "assistant", | |
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| { | |
| "type": "text", | |
| "text": "Now let me run the build to check for any compilation errors." | |
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| } | |
| [2026-01-28T20:09:45.267Z] [INFO] { | |
| "type": "assistant", | |
| "message": { | |
| "model": "claude-opus-4-5-20251101", | |
| "id": "msg_01SWUJ4UximQCkee1MMNF8LK", | |
| "type": "message", | |
| "role": "assistant", | |
| "content": [ | |
| { | |
| "type": "tool_use", | |
| "id": "toolu_01Ga6GYDw3Rz6vv6EU2SsDit", | |
| "name": "Bash", | |
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| "command": "cmake -B build -DCMAKE_BUILD_TYPE=Release 2>&1 | tail -30", | |
| "description": "Configure build" | |
| } | |
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| "text": "This session is being continued from a previous conversation that ran out of context. The summary below covers the earlier portion of the conversation.\n\nAnalysis:\nLet me analyze the conversation chronologically:\n\n1. **Initial Request**: The user is working on GitHub issue #74 for the veil-windows-client project. They mention there are 4 new comments on PR #75 and the PR description was edited after the last commit. The task is to continue investigating packet loss issues.\n\n2. **Investigation Phase**:\n - Fetched PR details and comments from GitHub\n - Downloaded daemon logs and server logs from gists provided by the repo owner\n - Analyzed logs to understand packet flow\n\n3. **Root Cause Discovery**:\n - Found that 50-byte packets with invalid IP versions (like 14, 12, 8, etc.) are failing to write to TUN on the server\n - Pattern: 1350-byte packets succeed, followed by 50-byte packets with garbage first bytes\n - The 1350-byte packets have `total_len=1400` in IP header, meaning they're fragments of a 1400-byte packet\n - The 50-byte \"packets\" are actually mux-layer fragments, not complete IP packets\n\n4. **Code Analysis**:\n - Examined `transport_session.cpp` - handles encryption/decryption and fragmentation\n - Examined `mux_codec.cpp` - encodes/decodes mux frames\n - Examined `fragment_reassembly.cpp` and `.h` - fragment reassembly class that exists but wasn't being used\n - Found that `fragment_data()` splits data into multiple frames but receiver doesn't reassemble\n - Key issue: `decrypt_packet()` returns frames directly without using `fragment_reassembly_`\n\n5. **Protocol Issue Identified**:\n - For non-fragmented: `sequence = msg_id` (plain counter)\n - For fragmented: `sequence = (msg_id << 32) | frag_idx`\n - Additionally, `fin` flag was always false by default, making it impossible to detect complete messages\n - The `fin=true` was only set if caller explicitly passed it, which they never did\n\n6. **Fix Implementation**:\n - Modified `fragment_data()` to always set `fin=true` on last fragment (or single message)\n - Modified `decrypt_packet()` to detect fragments and use `fragment_reassembly_` to reassemble\n\n7. **Current State**:\n - Made two edits to `transport_session.cpp`\n - Just ran CMake configure which succeeded\n - About to run the build to check for compilation errors\n\nFiles modified:\n- `/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp`\n\nUser messages:\n- Only one message: \"Issue to solve: https://github.com/VisageDvachevsky/veil-windows-client/issues/74 ...\" asking to continue work on the issue\n\nTodo list state:\n1. [completed] Analyze daemon logs\n2. [completed] Analyze server logs \n3. [completed] Identify where packets are being lost\n4. [in_progress] Implement fix for fragment reassembly\n5. [pending] Run local CI checks\n6. [pending] Verify fix passes CI checks\n\nSummary:\n1. Primary Request and Intent:\n The user is continuing work on GitHub issue #74 for the veil-windows-client VPN project. The issue involves packets being lost during VPN tunneling. The user provided a prepared branch (`issue-74-63e6e08be062`), working directory (`/tmp/gh-issue-solver-1769630568012`), and PR #75. There were 4 new comments on the PR with logs from the repo owner (VisageDvachevsky) showing packet flow diagnostics. The task is to investigate where packets are being lost and implement a fix.\n\n2. Key Technical Concepts:\n - VPN tunnel packet routing (TUN device writes)\n - Mux-layer fragmentation vs IP-layer fragmentation\n - ChaCha20-Poly1305 AEAD encryption\n - Sequence number encoding for fragments: `(msg_id << 32) | frag_idx`\n - Fragment reassembly protocol design\n - The `fin` flag for marking complete messages\n - TransportSession encryption/decryption flow\n - MuxCodec frame encoding/decoding (FrameKind::kData, kAck, etc.)\n\n3. Files and Code Sections:\n - **`/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp`**\n - Core file containing the fragment reassembly fix\n - **Edit 1 - Non-fragmented packets** (lines 382-388): Changed to always set `fin=true`:\n ```cpp\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed. Always set fin=true to indicate complete message.\n // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, true,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n ```\n - **Edit 2 - Fragmented packets last fragment** (lines 397-398): Changed to always set `fin=true` on last fragment:\n ```cpp\n const bool is_last = (offset + chunk_size >= data.size());\n // Issue #74: Always set fin=true on last fragment so receiver can detect message completion.\n // This enables proper fragment reassembly regardless of caller's fin parameter.\n const bool frag_fin = is_last;\n ```\n - **Edit 3 - decrypt_packet()** (lines 186-260): Added fragment reassembly logic:\n ```cpp\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n\n // Issue #74: Fragment reassembly\n const std::uint64_t frame_seq = frame->data.sequence;\n const std::uint64_t msg_id = frame_seq >> 32;\n const std::uint32_t frag_idx = static_cast<std::uint32_t>(frame_seq & 0xFFFFFFFF);\n const bool is_fragment = (msg_id > 0) || !frame->data.fin;\n\n if (is_fragment) {\n // Push to reassembly buffer and try to reassemble\n const std::uint64_t reassembly_id = (msg_id > 0) ? msg_id : 0;\n mux::Fragment frag{\n .offset = static_cast<std::uint16_t>(frag_idx * config_.max_fragment_size),\n .data = std::move(frame->data.payload),\n .last = frame->data.fin};\n fragment_reassembly_.push(reassembly_id, std::move(frag), now_fn_());\n auto reassembled = fragment_reassembly_.try_reassemble(reassembly_id);\n if (reassembled) {\n // Create complete frame with reassembled payload\n ++stats_.messages_reassembled;\n mux::MuxFrame complete_frame{};\n complete_frame.kind = mux::FrameKind::kData;\n complete_frame.data.payload = std::move(*reassembled);\n frames.push_back(std::move(complete_frame));\n }\n } else {\n // Complete non-fragmented message\n frames.push_back(std::move(*frame));\n }\n }\n ```\n\n - **`/tmp/gh-issue-solver-1769630568012/src/transport/mux/fragment_reassembly.h`** - Fragment struct and FragmentReassembly class definition\n - **`/tmp/gh-issue-solver-1769630568012/src/transport/mux/fragment_reassembly.cpp`** - Implementation of push/try_reassemble\n - **`/tmp/gh-issue-solver-1769630568012/src/transport/mux/mux_codec.cpp`** - Frame encoding/decoding\n - **`/tmp/gh-issue-solver-1769630568012/src/tunnel/tunnel.cpp`** - Client-side packet processing\n - **`/tmp/gh-issue-solver-1769630568012/src/server/main.cpp`** - Server-side packet processing\n - **`/tmp/gh-issue-solver-1769630568012/src/tun/tun_device_linux.cpp`** - TUN device write with diagnostic logging\n\n4. Errors and fixes:\n - **Protocol Design Issue**: The `fin` flag was always `false` by default because callers didn't explicitly set it. This made it impossible to distinguish complete messages from fragments.\n - Fix: Changed `fragment_data()` to always set `fin=true` on the last fragment regardless of caller's parameter\n - **Missing Fragment Reassembly**: `decrypt_packet()` returned raw frames without using the existing `fragment_reassembly_` member to reassemble fragmented data.\n - Fix: Added logic to detect fragments (by checking `msg_id > 0` or `fin=false`) and use `fragment_reassembly_.push()` and `try_reassemble()`\n - **Root cause of packet loss**: 1400-byte IP packets were being fragmented into 1350+50 bytes at mux layer. The 50-byte fragments had garbage IP headers (because they're mid-stream data, not valid IP packets) and failed to write to Linux TUN device.\n\n5. Problem Solving:\n - Identified packet loss was due to mux-layer fragmentation not being reassembled on receive\n - Log analysis showed pattern: 1350-byte valid IPv4 packets with `total_len=1400`, followed by 50-byte packets with invalid IP versions\n - The `FragmentReassembly` class existed but was never integrated into `decrypt_packet()`\n - Implemented fix to properly reassemble fragments before returning to caller for TUN write\n\n6. All user messages:\n - \"Issue to solve: https://github.com/VisageDvachevsky/veil-windows-client/issues/74\\nYour prepared branch: issue-74-63e6e08be062\\nYour prepared working directory: /tmp/gh-issue-solver-1769630568012\\nYour prepared Pull Request: https://github.com/VisageDvachevsky/veil-windows-client/pull/75\\nYour forked repository: konard/VisageDvachevsky-veil-windows-client\\nOriginal repository (upstream): VisageDvachevsky/veil-windows-client\\nGitHub Actions on your fork: https://github.com/konard/VisageDvachevsky-veil-windows-client/actions?query=branch%3Aissue-74-63e6e08be062\\n\\nNew comments on the pull request: 4\\nPull request description was edited after last commit\\n\\nContinue.\"\n\n7. Pending Tasks:\n - Complete build to verify no compilation errors\n - Run local CI checks (unit tests, linting)\n - Commit and push changes\n - Verify fix passes GitHub Actions CI\n - Update PR with fix description\n\n8. Current Work:\n Just finished implementing the fragment reassembly fix in `transport_session.cpp`. Made three edits:\n 1. Changed non-fragmented messages to always set `fin=true`\n 2. Changed last fragment to always set `fin=true` (ignoring caller's `fin` parameter)\n 3. Added fragment reassembly logic in `decrypt_packet()` to detect fragments and use `fragment_reassembly_` to reassemble before returning\n \n CMake configure just completed successfully. The next step is to run the actual build compilation.\n\n9. Optional Next Step:\n Run the build to check for compilation errors:\n ```bash\n cmake --build build -j$(nproc)\n ```\n \n The todo list shows: \"[in_progress] Implement fix for fragment reassembly in decrypt_packet\" and \"[pending] Run local CI checks before committing\"\n \n After the cmake configure succeeded, I was about to run the build compilation to verify there are no errors in the implemented fix.\n\nIf you need specific details from before compaction (like exact code snippets, error messages, or content you generated), read the full transcript at: /home/hive/.claude/projects/-tmp-gh-issue-solver-1769630568012/6ac110f2-5246-48ec-bb5d-4c5387d4b6ad.jsonl\nPlease continue the conversation from where we left it off without asking the user any further questions. Continue with the last task that you were asked to work on." | |
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| "content": " 430→ // SECURITY: Increment AFTER using the sequence number.\n 431→ // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n 432→ ++send_sequence_;\n 433→\n 434→ return packet;\n 435→}\n 436→\n 437→std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n 438→ std::uint64_t stream_id, bool fin) {\n 439→ std::vector<mux::MuxFrame> frames;\n 440→\n 441→ if (data.size() <= config_.max_fragment_size) {\n 442→ // No fragmentation needed. Always set fin=true to indicate complete message.\n 443→ // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n 444→ frames.push_back(mux::make_data_frame(\n 445→ stream_id, message_id_counter_++, true,\n 446→ std::vector<std::uint8_t>(data.begin(), data.end())));\n 447→ return frames;\n 448→ }\n 449→\n 450→ // Fragment the data.\n 451→ const std::uint64_t msg_id = message_id_counter_++;\n 452→ std::size_t offset = 0;\n 453→ std::uint64_t frag_seq = 0;\n 454→\n 455→ while (offset < data.size()) {\n 456→ const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n 457→ const bool is_last = (offset + chunk_size >= data.size());\n 458→ // Issue #74: Always set fin=true on last fragment so receiver can detect message completion.\n 459→ // This enables proper fragment reassembly regardless of caller's fin parameter.\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n" | |
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| "content": " // SECURITY: Increment AFTER using the sequence number.\n // This ensures each packet uses a unique sequence, and the next packet will use the next value.\n ++send_sequence_;\n\n return packet;\n}\n\nstd::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {\n // No fragmentation needed. Always set fin=true to indicate complete message.\n // Issue #74: Without fin=true, receiver can't distinguish complete messages from fragments.\n frames.push_back(mux::make_data_frame(\n stream_id, message_id_counter_++, true,\n std::vector<std::uint8_t>(data.begin(), data.end())));\n return frames;\n }\n\n // Fragment the data.\n const std::uint64_t msg_id = message_id_counter_++;\n std::size_t offset = 0;\n std::uint64_t frag_seq = 0;\n\n while (offset < data.size()) {\n const std::size_t chunk_size = std::min(config_.max_fragment_size, data.size() - offset);\n const bool is_last = (offset + chunk_size >= data.size());\n // Issue #74: Always set fin=true on last fragment so receiver can detect message completion.\n // This enables proper fragment reassembly regardless of caller's fin parameter.", | |
| "numLines": 30, | |
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| "text": "I need to mark the `fin` parameter as unused. I'll use `(void)fin` to suppress the warning, and add a comment explaining why we ignore it." | |
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| "file_path": "/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp", | |
| "old_string": "std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {", | |
| "new_string": "std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n // Issue #74: The 'fin' parameter is intentionally ignored. We always set fin=true on the\n // last fragment (or single message) to ensure the receiver can properly detect message\n // completion and perform fragment reassembly. This fixes packet loss caused by fragments\n // not being reassembled before TUN write.\n (void)fin;\n\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {" | |
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| } | |
| [2026-01-28T20:12:14.303Z] [INFO] { | |
| "type": "user", | |
| "message": { | |
| "role": "user", | |
| "content": [ | |
| { | |
| "tool_use_id": "toolu_017Koe44VrGaRNGef4p6L8J5", | |
| "type": "tool_result", | |
| "content": "The file /tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp has been updated successfully." | |
| } | |
| ] | |
| }, | |
| "parent_tool_use_id": null, | |
| "session_id": "6ac110f2-5246-48ec-bb5d-4c5387d4b6ad", | |
| "uuid": "a00bc054-0688-4cca-8397-b3bb4c41238c", | |
| "tool_use_result": { | |
| "filePath": "/tmp/gh-issue-solver-1769630568012/src/transport/session/transport_session.cpp", | |
| "oldString": "std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {", | |
| "newString": "std::vector<mux::MuxFrame> TransportSession::fragment_data(std::span<const std::uint8_t> data,\n std::uint64_t stream_id, bool fin) {\n // Issue #74: The 'fin' parameter is intentionally ignored. We always set fin=true on the\n // last fragment (or single message) to ensure the receiver can properly detect message\n // completion and perform fragment reassembly. This fixes packet loss caused by fragments\n // not being reassembled before TUN write.\n (void)fin;\n\n std::vector<mux::MuxFrame> frames;\n\n if (data.size() <= config_.max_fragment_size) {", | |
| "originalFile": "#include \"transport/session/transport_session.h\"\n\n#include <sodium.h>\n\n#include <algorithm>\n#include <cassert>\n#include <chrono>\n#include <cstdint>\n#include <limits>\n#include <optional>\n#include <span>\n#include <utility>\n#include <vector>\n\n#include \"common/crypto/crypto_engine.h\"\n#include \"common/crypto/random.h\"\n#include \"common/logging/logger.h\"\n\n// SECURITY: Nonce overflow threshold.\n// With uint64_t, we can send 2^64 packets before overflow. At 10 Gbps with 1KB packets,\n// this would take over 58 million years. However, we set a conservative threshold to\n// detect any anomalies or implementation bugs that might cause rapid sequence growth.\n// This threshold triggers a warning well before any practical risk of overflow.\nconstexpr std::uint64_t kNonceOverflowWarningThreshold = std::numeric_limits<std::uint64_t>::max() - (1ULL << 32);\n\nnamespace veil::transport {\n\nTransportSession::TransportSession(const handshake::HandshakeSession& handshake_session,\n TransportSessionConfig config, std::function<TimePoint()> now_fn)\n : config_(config),\n now_fn_(std::move(now_fn)),\n keys_(handshake_session.keys),\n current_session_id_(handshake_session.session_id),\n send_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.send_key, keys_.send_nonce)),\n recv_seq_obfuscation_key_(crypto::derive_sequence_obfuscation_key(keys_.recv_key, keys_.recv_nonce)),\n replay_window_(config_.replay_window_size),\n session_rotator_(config_.session_rotation_interval, config_.session_rotation_packets),\n reorder_buffer_(0, config_.reorder_buffer_size),\n fragment_reassembly_(config_.fragment_buffer_size),\n retransmit_buffer_(config_.retransmit_config, now_fn_) {\n // Enhanced diagnostic logging for session creation (Issue #69, #72)\n // Use INFO level so key fingerprints are always logged, not just in verbose mode\n // This helps diagnose key mismatch issues between client and server\n LOG_INFO(\"TransportSession created: session_id={}\", current_session_id_);\n LOG_INFO(\" send_key_fp={:02x}{:02x}{:02x}{:02x}, send_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.send_key[0], keys_.send_key[1], keys_.send_key[2], keys_.send_key[3],\n keys_.send_nonce[0], keys_.send_nonce[1], keys_.send_nonce[2], keys_.send_nonce[3]);\n LOG_INFO(\" recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n LOG_INFO(\" send_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}\",\n send_seq_obfuscation_key_[0], send_seq_obfuscation_key_[1],\n send_seq_obfuscation_key_[2], send_seq_obfuscation_key_[3],\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3]);\n}\n\nTransportSession::~TransportSession() {\n // SECURITY: Clear all session key material on destruction\n sodium_memzero(keys_.send_key.data(), keys_.send_key.size());\n sodium_memzero(keys_.recv_key.data(), keys_.recv_key.size());\n sodium_memzero(keys_.send_nonce.data(), keys_.send_nonce.size());\n sodium_memzero(keys_.recv_nonce.data(), keys_.recv_nonce.size());\n sodium_memzero(send_seq_obfuscation_key_.data(), send_seq_obfuscation_key_.size());\n sodium_memzero(recv_seq_obfuscation_key_.data(), recv_seq_obfuscation_key_.size());\n LOG_DEBUG(\"TransportSession destroyed, keys cleared\");\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::encrypt_data(\n std::span<const std::uint8_t> plaintext, std::uint64_t stream_id, bool fin) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n\n // Fragment data if necessary.\n auto frames = fragment_data(plaintext, stream_id, fin);\n\n for (auto& frame : frames) {\n auto encrypted = build_encrypted_packet(frame);\n\n // Store in retransmit buffer.\n if (retransmit_buffer_.has_capacity(encrypted.size())) {\n retransmit_buffer_.insert(send_sequence_ - 1, encrypted);\n }\n\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n if (frame.kind == mux::FrameKind::kData) {\n ++stats_.fragments_sent;\n }\n\n result.push_back(std::move(encrypted));\n ++packets_since_rotation_;\n }\n\n return result;\n}\n\nstd::vector<std::uint8_t> TransportSession::encrypt_frame(const mux::MuxFrame& frame) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Use the existing build_encrypted_packet method which properly encrypts any frame type.\n // This preserves the frame's original kind (ACK, control, heartbeat, etc.) without wrapping\n // it in a DATA frame like encrypt_data() does.\n auto encrypted = build_encrypted_packet(frame);\n\n // Update statistics for non-data frames (data frame stats are updated in encrypt_data)\n ++stats_.packets_sent;\n stats_.bytes_sent += encrypted.size();\n ++packets_since_rotation_;\n\n return encrypted;\n}\n\nstd::optional<std::vector<mux::MuxFrame>> TransportSession::decrypt_packet(\n std::span<const std::uint8_t> ciphertext) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Minimum packet size: nonce (8 bytes for sequence) + tag (16 bytes) + header (1 byte minimum)\n constexpr std::size_t kMinPacketSize = 8 + 16 + 1;\n if (ciphertext.size() < kMinPacketSize) {\n LOG_DEBUG(\"Packet too small: {} bytes\", ciphertext.size());\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Extract obfuscated sequence from first 8 bytes.\n std::uint64_t obfuscated_sequence = 0;\n for (int i = 0; i < 8; ++i) {\n obfuscated_sequence = (obfuscated_sequence << 8) | ciphertext[static_cast<std::size_t>(i)];\n }\n\n // DPI RESISTANCE (Issue #21): Deobfuscate sequence number.\n // The sender obfuscated the sequence to prevent traffic analysis. We reverse the\n // obfuscation here to recover the real sequence for nonce derivation and replay checking.\n const std::uint64_t sequence = crypto::deobfuscate_sequence(obfuscated_sequence, recv_seq_obfuscation_key_);\n\n // Enhanced diagnostic logging for decryption debugging (Issue #69, #72)\n // Use WARN level temporarily to trace decryption flow in production\n LOG_WARN(\"Decrypt attempt: session_id={}, pkt_size={}, obfuscated_seq={:#018x}, deobfuscated_seq={}\",\n current_session_id_, ciphertext.size(), obfuscated_sequence, sequence);\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_8_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n\n // Replay check.\n if (!replay_window_.mark_and_check(sequence)) {\n LOG_WARN(\"Packet replay detected or out of window: sequence={}, highest={}\",\n sequence, replay_window_.highest());\n ++stats_.packets_dropped_replay;\n return std::nullopt;\n }\n LOG_WARN(\"Replay check passed, proceeding to decryption\");\n\n // Derive nonce from sequence.\n const auto nonce = crypto::derive_nonce(keys_.recv_nonce, sequence);\n\n // Decrypt (skip sequence prefix).\n auto ciphertext_body = ciphertext.subspan(8);\n auto decrypted = crypto::aead_decrypt(keys_.recv_key, nonce, {}, ciphertext_body);\n if (!decrypted) {\n // Enhanced error logging for decryption failures (Issue #69, #72)\n // Use WARN level so this always appears, not just in verbose mode\n // Log key fingerprints (first 4 bytes) to help diagnose key mismatch issues\n LOG_WARN(\"Decryption FAILED: session_id={}, sequence={}, ciphertext_size={}, \"\n \"recv_key_fp={:02x}{:02x}{:02x}{:02x}, recv_nonce_fp={:02x}{:02x}{:02x}{:02x}\",\n current_session_id_, sequence, ciphertext_body.size(),\n keys_.recv_key[0], keys_.recv_key[1], keys_.recv_key[2], keys_.recv_key[3],\n keys_.recv_nonce[0], keys_.recv_nonce[1], keys_.recv_nonce[2], keys_.recv_nonce[3]);\n // Also log the obfuscation key fingerprint and packet header\n LOG_WARN(\" recv_seq_obfuscation_key_fp={:02x}{:02x}{:02x}{:02x}, first_pkt_bytes={:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}\",\n recv_seq_obfuscation_key_[0], recv_seq_obfuscation_key_[1],\n recv_seq_obfuscation_key_[2], recv_seq_obfuscation_key_[3],\n ciphertext[0], ciphertext[1], ciphertext[2], ciphertext[3],\n ciphertext[4], ciphertext[5], ciphertext[6], ciphertext[7]);\n ++stats_.packets_dropped_decrypt;\n return std::nullopt;\n }\n\n // Enhanced diagnostic logging for decryption success (Issue #72)\n LOG_WARN(\"Decryption SUCCESS: session_id={}, sequence={}, decrypted_size={}\",\n current_session_id_, sequence, decrypted->size());\n\n ++stats_.packets_received;\n stats_.bytes_received += ciphertext.size();\n\n // Parse mux frames from decrypted data.\n std::vector<mux::MuxFrame> frames;\n auto frame = mux::MuxCodec::decode(*decrypted);\n if (frame) {\n // Log frame details for debugging (Issue #72)\n LOG_WARN(\" Frame decoded: kind={}, payload_size={}\",\n static_cast<int>(frame->kind),\n frame->kind == mux::FrameKind::kData ? frame->data.payload.size() : 0);\n\n if (frame->kind == mux::FrameKind::kData) {\n ++stats_.fragments_received;\n recv_ack_bitmap_.ack(sequence);\n\n // Issue #74: Fragment reassembly\n // For fragmented messages, sequence is encoded as (msg_id << 32) | frag_idx.\n // For non-fragmented messages (or first fragment of msg_id=0), we detect by fin flag.\n // - If fin=true: complete message, return directly\n // - If fin=false: fragment, accumulate and try reassembly\n const std::uint64_t frame_seq = frame->data.sequence;\n const std::uint64_t msg_id = frame_seq >> 32;\n const std::uint32_t frag_idx = static_cast<std::uint32_t>(frame_seq & 0xFFFFFFFF);\n\n // Determine if this is a fragment vs complete message:\n // - msg_id > 0 means sequence >= 2^32, definitely a fragment\n // - msg_id == 0 with fin=false could be first fragment of message 0\n // - msg_id == 0 with fin=true and frag_idx == 0 is a complete non-fragmented message\n const bool is_fragment = (msg_id > 0) || !frame->data.fin;\n\n if (is_fragment) {\n // This is a fragment - push to reassembly buffer\n // For fragments, use msg_id as the message identifier\n // If msg_id==0, we use the sequence directly since frag_idx distinguishes fragments\n const std::uint64_t reassembly_id = (msg_id > 0) ? msg_id : 0;\n\n // Calculate offset from fragment index\n // We track cumulative size per message to compute offsets\n // For simplicity, use frag_idx as offset (works when fragments arrive in order)\n // TODO: For out-of-order fragments, we'd need more sophisticated tracking\n mux::Fragment frag{\n .offset = static_cast<std::uint16_t>(frag_idx * config_.max_fragment_size),\n .data = std::move(frame->data.payload),\n .last = frame->data.fin};\n\n LOG_WARN(\" Fragment: msg_id={}, frag_idx={}, offset={}, size={}, last={}\",\n msg_id, frag_idx, frag.offset, frag.data.size(), frag.last);\n\n fragment_reassembly_.push(reassembly_id, std::move(frag), now_fn_());\n\n // Try to reassemble the complete message\n auto reassembled = fragment_reassembly_.try_reassemble(reassembly_id);\n if (reassembled) {\n // Successfully reassembled - create a new data frame with complete payload\n LOG_WARN(\" Reassembled complete message: msg_id={}, size={}\", msg_id, reassembled->size());\n ++stats_.messages_reassembled;\n\n mux::MuxFrame complete_frame{};\n complete_frame.kind = mux::FrameKind::kData;\n complete_frame.data.stream_id = frame->data.stream_id;\n complete_frame.data.sequence = frame_seq; // Use original sequence\n complete_frame.data.fin = true;\n complete_frame.data.payload = std::move(*reassembled);\n frames.push_back(std::move(complete_frame));\n }\n // If not yet complete, don't add to frames - wait for more fragments\n } else {\n // Complete non-fragmented message - return directly\n LOG_WARN(\" Complete message: sequence={}, size={}\", frame_seq, frame->data.payload.size());\n frames.push_back(std::move(*frame));\n }\n } else {\n // Non-data frames (ACK, control, heartbeat) - return directly\n frames.push_back(std::move(*frame));\n }\n } else {\n // Log frame decode failure for debugging (Issue #72)\n LOG_WARN(\" Frame decode FAILED: decrypted_size={}, first_byte={:#04x}\",\n decrypted->size(), decrypted->empty() ? 0 : (*decrypted)[0]);\n }\n\n if (sequence > recv_sequence_max_) {\n recv_sequence_max_ = sequence;\n }\n\n return frames;\n}\n\nstd::vector<std::vector<std::uint8_t>> TransportSession::get_retransmit_packets() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n std::vector<std::vector<std::uint8_t>> result;\n auto to_retransmit = retransmit_buffer_.get_packets_to_retransmit();\n\n for (const auto* pkt : to_retransmit) {\n if (retransmit_buffer_.mark_retransmitted(pkt->sequence)) {\n result.push_back(pkt->data);\n ++stats_.retransmits;\n } else {\n // Exceeded max retries, drop packet.\n retransmit_buffer_.drop_packet(pkt->sequence);\n }\n }\n\n return result;\n}\n\nvoid TransportSession::process_ack(const mux::AckFrame& ack) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // Debug logging for ACK processing (Issue #72)\n LOG_WARN(\"process_ack called: stream_id={}, ack={}, bitmap={:#010x}, pending_before={}\",\n ack.stream_id, ack.ack, ack.bitmap, retransmit_buffer_.pending_count());\n\n // Cumulative ACK.\n retransmit_buffer_.acknowledge_cumulative(ack.ack);\n\n // Selective ACK from bitmap.\n for (std::uint32_t i = 0; i < 32; ++i) {\n if (((ack.bitmap >> i) & 1U) != 0U) {\n std::uint64_t seq = ack.ack - 1 - i;\n if (seq > 0) {\n retransmit_buffer_.acknowledge(seq);\n }\n }\n }\n\n // Debug logging for ACK processing result (Issue #72)\n LOG_WARN(\"process_ack done: pending_after={}\", retransmit_buffer_.pending_count());\n}\n\nmux::AckFrame TransportSession::generate_ack(std::uint64_t stream_id) {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n return mux::AckFrame{\n .stream_id = stream_id,\n .ack = recv_ack_bitmap_.head(),\n .bitmap = recv_ack_bitmap_.bitmap(),\n };\n}\n\nbool TransportSession::should_rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n return session_rotator_.should_rotate(packets_since_rotation_, now_fn_());\n}\n\nvoid TransportSession::rotate_session() {\n VEIL_DCHECK_THREAD(thread_checker_);\n\n // SECURITY: Capture sequence number before rotation for verification\n [[maybe_unused]] const auto sequence_before_rotation = send_sequence_;\n\n current_session_id_ = session_rotator_.rotate(now_fn_());\n packets_since_rotation_ = 0;\n ++stats_.session_rotations;\n\n // ===========================================================================\n // SECURITY-CRITICAL: NONCE COUNTER LIFECYCLE\n // ===========================================================================\n // The nonce for ChaCha20-Poly1305 is derived as:\n // nonce = derive_nonce(base_nonce, send_sequence_)\n //\n // Where derive_nonce XORs the counter into the last 8 bytes of base_nonce.\n //\n // CRITICAL INVARIANT: send_sequence_ MUST NEVER be reset.\n //\n // Why this matters:\n // - ChaCha20-Poly1305 security completely breaks if the same (key, nonce) pair\n // is ever used twice\n // - The encryption key (keys_.send_key) is derived once during handshake and\n // does NOT change during session rotation\n // - Session rotation only changes the session_id for protocol-level management\n //\n // Nonce uniqueness guarantee:\n // - send_sequence_ is uint64_t, allowing 2^64 unique nonces\n // - At 10 Gbps with 1KB packets, exhaustion would take ~58 million years\n // - send_sequence_ is incremented after each packet in build_encrypted_packet()\n // - It is NEVER reset or decremented\n //\n // This design was chosen over alternatives like:\n // - Rotating keys on session rotation: Would require re-handshake or key derivation\n // - Resetting counter with new base_nonce: Adds complexity, risk of implementation bugs\n // - Using random nonces: Requires tracking to prevent collisions (birthday bound)\n //\n // See also: Issue #3 - Verify nonce counter lifecycle on session rotation\n // ===========================================================================\n\n // ASSERTION: Verify send_sequence_ was not reset (defense in depth)\n assert(send_sequence_ == sequence_before_rotation &&\n \"SECURITY VIOLATION: send_sequence_ must never be reset during rotation\");\n\n LOG_DEBUG(\"Session rotated to session_id={}, send_sequence_={} (unchanged)\",\n current_session_id_, send_sequence_);\n}\n\nstd::vector<std::uint8_t> TransportSession::build_encrypted_packet(const mux::MuxFrame& frame) {\n // SECURITY: Check for sequence number overflow (extremely unlikely but provides defense in depth)\n // At 10 Gbps with 1KB packets, reaching this threshold would take millions of years,\n // but we check anyway to catch any implementation bugs that might cause unexpected growth.\n if (send_sequence_ >= kNonceOverflowWarningThreshold) {\n LOG_ERROR(\"SECURITY WARNING: send_sequence_ approaching overflow (current={}). \"\n \"Session should be re-established to prevent nonce reuse.\",\n send_sequence_);\n // Note: We log but continue - in practice this is unreachable under normal operation.\n // A production system might want to force session termination here.\n }\n\n // Serialize the frame.\n auto plaintext = mux::MuxCodec::encode(frame);\n\n // Derive nonce from current send sequence.\n // SECURITY: Each packet gets a unique nonce = base_nonce XOR send_sequence_\n // Since send_sequence_ is never reset and always increments, nonces are guaranteed unique.\n const auto nonce = crypto::derive_nonce(keys_.send |
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