Johnathan Corgan 7c8a5bd5ae Implement RX event loop with wire format dispatch
Wire format module (src/wire.rs):
- Discriminator-based packet framing (0x00/0x01/0x02)
- Header parsing: EncryptedHeader, Msg1Header, Msg2Header
- Serialization: build_msg1(), build_msg2(), build_encrypted()
- 11 unit tests for parsing and roundtrip

Session index tracking:
- PeerConnection: our_index, their_index, transport_id, source_addr
- ActivePeer: noise_session, indices, transport_id, current_addr
- Removed Clone from ActivePeer (NoiseSession nonce reuse risk)
- PromotionResult refactored to use NodeId instead of ActivePeer

Node RX event loop:
- run_rx_loop() with packet_rx channel consumption
- process_packet() discriminator dispatch
- handle_encrypted_frame() with O(1) index lookup
- handle_msg1() with rate limiting and inbound handshake
- handle_msg2() completing outbound handshakes
- dispatch_link_message() stub for link protocol

Infrastructure (from Session 56):
- IndexAllocator for random 32-bit session indices
- HandshakeRateLimiter with token bucket
- ReplayWindow for 2048-packet sliding window
- Bloom filter defaults updated to v1 spec

All 265 tests pass.
2026-02-02 17:20:06 +00:00

FIPS Documentation

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design/ Protocol design specifications and analysis
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The Free Internetworking Peering System
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