meshbay.git/packages/meshbay-node/src/meshbay_node/transport/quic_server.py, branch 0.1

feat: Phase 9 — Web client SPA with WebRTC P2P transport

2026-08-11T02:13:53Z

Complete browser-based client: Preact SPA with login, group file browser, encrypted download, video playback, group chat, i18n, and dark/light theme. Browser connects P2P to nodes behind residential NAT via WebRTC DataChannel (aiortc). Hub handles signaling only — all data flows E2E. Performance: pipelined downloads (8-chunk sliding window), binary msgpack wire format (no base64), redundant I/O elimination. Large file downloads stream to disk via File System Access API (showSaveFilePicker). Validated on SFR + Orange residential NATs, Chrome + Firefox, IPv4/IPv6. 132 tests passing. Deployed to meshbay.org + Orange node. Co-Authored-By: Claude Opus 4.6

feat: Phase 7 — Node v2 (multi-group, Sender Keys, 0-RTT, chat, denylist)

2026-08-10T01:07:56Z

Implements all 8 milestones (7.0-7.7): - 7.0: JWT carries `groups` claim; node verifies group membership at MNP handshake (QUIC + TCP+TLS). Resolves security review C2. - 7.1: QUIC 0-RTT session resumption via stored session tickets (17-21ms reconnect vs 47ms cold). - 7.2: Hub→node WebSocket signaling for NAT punch coordination (`client_incoming`/`punch_ready`) + jti denylist push. Denylist class blocks revoked users/jtis at handshake. - 7.3: Multi-group daemon — one QUIC port serves N groups with per-group GEK, shared_root, and index routing. - 7.4: HLS streaming via QUIC (STREAM_SEGMENT message type, ffmpeg segment extraction). - 7.5: Sender Keys protocol for group chat (Signal Groups approach). Each member has own sending chain key, HKDF chain ratchet, AES-256-GCM encryption, Ed25519 signing. Resolves security review C1. - 7.6: Chat store (SQLite via aiosqlite), CHAT_MESSAGE MNP wire type with peer broadcast, web UI with WebSocket push. - 7.7: Argon2id calibration CLI. First security review included (first-review.md). 109 tests, demo-v3 validated against meshbay.org production hub. Co-Authored-By: Claude Opus 4.6

feat(node): punch_nat() — NAT traversal from QUIC server socket

2026-08-09T22:29:58Z

SFR residential NAT is Port-Restricted Cone: inbound is only allowed from (peer_ip, peer_port) if the node previously sent a packet TO (peer_ip, peer_port) from the SAME socket. punch_nat(peer_ip, peer_port): sends a probe UDP packet from the QUIC server's own transport (_transport.sendto), creating the correct NAT entry. Used after server.start() to enable direct QUIC connections through SFR NAT without UPnP or relay. demo-v2 result: QUIC/UDP direct Fedora→SFR NAT→meshbay.org validated. Connection time 12.7s (QUIC handshake through NAT). File transfer 700B. QuicChunkClient local_port param: ensures client binds to same port as punch_nat destination (Port-Restricted Cone requirement). Co-Authored-By: Claude Sonnet 4.6 (1M context)

fix(node): QuicChunkClient local_port + QuicChunkServer dual-stack

2026-08-09T22:12:40Z

local_port=0 param on QuicChunkClient — specify for Port-Restricted Cone NAT hole punching (client must send from the same port the node probed to). QuicChunkServer default host '::' for IPv4+IPv6 dual-stack on Linux. Co-Authored-By: Claude Sonnet 4.6 (1M context)

feat(node): add QUIC transport (MNP v2) — quic_server + quic_client

2026-08-09T03:13:51Z

QuicChunkServer/QuicChunkClient: same MNP protocol over QUIC/UDP. Enables hole-punching (Spike 4 Cone NAT validated). Uses aioquic 1.3.0. Bug found+fixed: asyncio.Event race condition in client recv loop (quic_event_received overwrote _stream_events[0] after _recv created it). Fixed with asyncio.Queue (no shared mutable state). Server uses synchronous handlers in quic_event_received (avoids ensure_future transmit timing issue). 3/3 tests. Full suite: 50/50. Co-Authored-By: Claude Sonnet 4.6 (1M context)