Created
July 4, 2025 23:35
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example SSE client to view Finch events
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>Finch SSE Events</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1" /> | |
| <style> | |
| :root { | |
| --bg: #fff; | |
| --card-bg: #f8f9fa; | |
| --key-color: #0056b3; | |
| --val-color: #495057; | |
| --label-color: #6c757d; | |
| --text-sm: 0.82rem; | |
| --highlight-bg: #fff3cd; | |
| } | |
| html,body{margin:0;padding:0;background:var(--bg);font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:#212529} | |
| header{padding:.75rem 1rem;background:#0d6efd;color:#fff} | |
| h1{margin:0;font-size:1.25rem;font-weight:600} | |
| .container{ | |
| max-width: 1200px; | |
| margin: 0 auto; | |
| padding: 1rem; | |
| display: flex; | |
| flex-direction: column; | |
| gap: 1rem; | |
| box-sizing: border-box; | |
| } | |
| #search{ | |
| width: 100%; | |
| padding: .75rem; | |
| font-size: 1rem; | |
| border: 1px solid #ced4da; | |
| border-radius: 6px; | |
| box-sizing: border-box; | |
| } | |
| #log{flex:1;height:65vh;overflow:auto} | |
| .event{ | |
| background: var(--card-bg); | |
| border: 1px solid #dee2e6; | |
| border-radius: 6px; | |
| padding: 1rem; | |
| margin-bottom: .75rem; | |
| box-shadow: 0 1px 2px rgba(0,0,0,.04); | |
| width: 100%; | |
| box-sizing: border-box; | |
| } | |
| .metadata{font-weight:600;margin-bottom:.35em;font-size:1rem} | |
| .details{margin-left:1.2em;font-size:var(--text-sm);line-height:1.28;} | |
| .details div{margin:1px 0} | |
| .details .label{color:var(--label-color);display:inline-block;margin-right:0.18em;font-size:0.95em;} | |
| .details .value{font-family:ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;font-size:1em;} | |
| .raw{background:#fff;border:1px solid #e2e3e5;border-radius:4px;padding:.5em .7em;font-size:var(--text-sm);white-space:normal;word-break:break-all;overflow:auto;box-sizing:border-box;} | |
| .j-key{color:var(--key-color)} | |
| .j-val{color:var(--val-color)} | |
| mark{background:var(--highlight-bg);color:inherit;padding:0} | |
| @media(max-width:600px){ | |
| .container{padding:.3em} | |
| .event{padding:.7em} | |
| .details{margin-left:.5em} | |
| .details .label{min-width:0;} | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <header><h1>Finch SSE Events</h1></header> | |
| <div class="container"> | |
| <input id="search" placeholder="Filter events…" /> | |
| <div id="log" aria-live="polite"></div> | |
| </div> | |
| <script> | |
| (() => { | |
| const log = document.getElementById('log'); | |
| const input = document.getElementById('search'); | |
| const events = []; | |
| // Helpers | |
| const esc = s => s.replace(/[&<>]/g, c => ({'&':'&','<':'<','>':'>'}[c])); | |
| const highlight = (text, kw) => | |
| kw | |
| ? text.replace(new RegExp(kw.replace(/[.*+?^${}()|[\]\\]/g,'\\$&'),'gi'), m=>`<mark>${m}</mark>`) | |
| : text; | |
| // Highlighting only keys and values (not the tags) | |
| function jsonPrettyHighlight(j, kw) { | |
| // color and highlight keys and values | |
| return esc(j).replace( | |
| /(\"([^\"\\]|\\.)*\")(?=:)|(:)\s*(\"([^\"\\]|\\.)*\"|\d+|true|false|null)/g, | |
| (m, key, _, colon, val) => { | |
| if (key) return `<span class="j-key">${highlight(key, kw)}</span>`; | |
| if (val) return `${colon || ''} <span class="j-val">${highlight(val, kw)}</span>`; | |
| return m; | |
| } | |
| ); | |
| } | |
| function render() { | |
| const kw = input.value.toLowerCase(); | |
| log.innerHTML = ''; | |
| events.forEach(({obj,raw}) => { | |
| if (kw && !raw.toLowerCase().includes(kw)) return; | |
| const m=obj; | |
| const src = m.srcIP || '—'; | |
| const port = m.dstPort || '—'; | |
| let path = m.request || ''; | |
| if (typeof path!=='string') path=''; | |
| if (path && !path.startsWith('/')) path='/'+path; | |
| // event card | |
| const card = document.createElement('div'); | |
| card.className='event'; | |
| card.innerHTML = ` | |
| <div class="metadata">${highlight(`${src} → :${port}${path}`,kw)}</div> | |
| <div class="details"> | |
| ${detailHTML('JA3', m.ja3 || '—', kw)} | |
| ${detailHTML('JA4', m.ja4 || '—', kw)} | |
| ${detailHTML('JA4H', m.ja4h || '—', kw)} | |
| ${detailHTML('UA', m.userAgent, kw)} | |
| </div> | |
| <div class="raw">${jsonPrettyHighlight(JSON.stringify(m), kw)}</div>`; | |
| log.append(card); | |
| }); | |
| log.scrollTop=log.scrollHeight; | |
| } | |
| // tiny templater for labelled rows | |
| const detailHTML = (label,val,kw)=> | |
| `<div><span class="label">${label}:</span><span class="value">${highlight(esc(val),kw)}</span></div>`; | |
| // stream | |
| const es=new EventSource(location.protocol.startsWith('http')?'/events':'http://localhost:9036/events'); | |
| es.onmessage = e => {try{events.push({obj:JSON.parse(e.data),raw:e.data})}catch{events.push({obj:{raw:e.data},raw:e.data})};render()}; | |
| es.onerror = () => {events.push({obj:{msg:'Connection lost. Retrying…'},raw:'Connection lost.'});render()}; | |
| input.addEventListener('input',render); | |
| })(); | |
| </script> | |
| </body> | |
| </html> |
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