1de5a8f3e6
Server fixes: - Move H3Connection initialization to ProtocolNegotiated event (matches official aioquic pattern) - Fix datagram routing to use session_id instead of flow_id - Add max_datagram_frame_size=65536 to enable QUIC datagrams - Fix send_datagram() to use keyword arguments - Add certificate chain handling for Let's Encrypt - Add no-cache headers to static server Command-line improvements: - Move settings from environment variables to argparse - Add comprehensive CLI arguments with defaults - Default mode=wt, cert=cert.pem, key=key.pem Test clients: - Add test_webtransport_client.py - Python WebTransport client that successfully connects - Add test_http3.py - Basic HTTP/3 connectivity test Client updates: - Auto-configure server URL and certificate hash from /cert-hash.json - Add ES6 module support Status: ✅ Python WebTransport client works perfectly ✅ Server properly handles WebTransport connections and datagrams ❌ Chrome fails due to cached QUIC state (QUIC_IETF_GQUIC_ERROR_MISSING) 🔍 Firefox sends packets but fails differently - to be debugged next session 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>