DoH Monitoring Tools - Performance testing, DNS leak checks, and log analysis for DNS-over-HTTPS

doh-monitoring-tools.py

#!/usr/bin/env python3
# DoH Performance Monitoring Tools

import time
import dns.resolver
import requests
from statistics import mean, stdev

# Test using curl
# curl -H 'content-type: application/dns-message' \
#      --data-binary @<(echo -n 'q80BAAABAAAAAAAAA3d3dwdleGFtcGxlA2NvbQAAAQAB' | base64 -d) \
#      https://cloudflare-dns.com/dns-query | hexdump -C

# Test using dog (better than dig for DoH)
# dog example.com @https://cloudflare-dns.com/dns-query

# Check for DNS leaks
# Visit: https://dnsleaktest.com
# Should only show your configured DoH provider

# Performance benchmarking
# ... (additional implementation details)
benchmark_dns(traditional_dns_query, test_domains, "Traditional DNS")
benchmark_dns(doh_query, test_domains, "DNS-over-HTTPS")

# Parse dnscrypt-proxy logs
LOG_FILE="/var/log/dnscrypt-proxy/query.log"
# ... (additional implementation details)