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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) <noreply@anthropic.com>
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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) <noreply@anthropic.com>
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meshbay-node/pyproject.toml: add aioquic>=1.0 (was commented 'v2'),
websockets>=12.0 (revocation push). Both are production code since Phase 5.
meshbay-hub/pyproject.toml: add aiosqlite (tests without PostgreSQL),
slowapi (rate limiting), websockets (revocation push), PyJWT (explicit).
transport/__init__.py: QUIC imports wrapped in try/except — node works
without aioquic (TCP+TLS + HTTP fallback). QUIC_AVAILABLE flag exported.
QUICKSTART.md: replace manual pip list with 'pip install -e' that pulls
all deps from pyproject.toml automatically. Add dependency table.
CLAUDE.md: clarify that all deps go in pyproject.toml, not manual installs.
81/81 tests.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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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) <noreply@anthropic.com>
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FastAPI app on port 19001: GET / (node info), GET /index (public
group index JSON), GET /file/{id} (full download), GET /file/{id}/{n}
(encrypted or plaintext chunk), GET /hls/{id}/playlist.m3u8 +
GET /hls/{id}/{n}.ts (HLS streaming via ffmpeg).
Public groups: index browsable without auth, files downloadable.
Private groups: chunks encrypted with GEK, auth required.
7/7 tests passing. Full suite: 47/47.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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Self-signed TLS cert (RSA-2048, TLS 1.3 min). Server: JWT offline
verify, index sync, file_request → encrypt+sign chunk pipeline.
Client: handshake, fetch_index, fetch_chunk with Ed25519 verify +
blake3 hash check + GEK decrypt. Integration test: 2MB file served
in 2 chunks, reassembled == original. 3/3 tests. Full suite: 29/29.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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3-package layout: meshbay-common (shared crypto/protocol),
meshbay-hub (FastAPI server), meshbay-node (local daemon).
Includes validated POC spikes 1-6 in poc/, architecture drafts
v1/v2 in docs/, and CLAUDE.md project conventions.
All cryptographic primitives extracted from POC into
meshbay_common/crypto.py (GEK wrap/unwrap, chunk key derivation,
keystore encryption, chunk signing).
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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