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>
- New server/quic_transport.py using aioquic to accept QUIC connections and datagrams
- run.py: QUIC mode when QUIC_CERT/QUIC_KEY provided; else in-memory
- requirements.txt: aioquic + cryptography
- Protocol: RLE packing, TLV chooser, body_2bit_chunk helper, state_full_body builder
- Server: on join, build snapshot body and partition across PART packets if over MTU; include apples only in first part; chunk single oversized snake with 2-bit chunking
- Protocol: SnakeDelta structure; build_state_delta(_body); build_part
- Server: compute per-snake changes (move/grow/blocked-shrink), apples diffs
- Partition large deltas by snake changes with apples in first part; use update_id
- Send STATE_DELTA when under MTU; else PART packets referencing STATE_DELTA
- Input buffer rules: enqueue+consume with 180° guard (len>1)
- Movement: wrap per config; allow moving into own tail when it vacates
- Blocking: head holds, tail shrinks to min 1
- Apples: eat= grow; ensure target apples after tick
- Broadcast: send current snakes/apples as delta (placeholder for real deltas)
