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9a7fa921ab269b2912e75f0eb9df1b1eef0352cb
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6 Commits
Author SHA1 Message Date
Johnathan Corgan 9a7fa921ab Discovery protocol: LookupRequest/LookupResponse handlers 
Implement the coordinate discovery protocol with flood-based lookup
and reverse-path response routing.

Wire format: LookupRequest (0x30) encode/decode with TTL, visited
bloom filter, origin coords. LookupResponse (0x31) encode/decode
with target coords and Schnorr proof signature.

Handler logic: request dedup by request_id, visited filter loop
prevention, TTL enforcement, lazy purge of expired entries (10s).
Response routing: originator caches route in route_cache, transit
nodes reverse-path forward via recent_requests.

Node state: RecentRequest struct, route_cache (RouteCache), and
recent_requests map for dedup + reverse-path forwarding.

13 handler tests (9 unit + 4 integration) plus 4 protocol tests.
392 tests pass, clean build.
 2026-02-12 14:46:33 +00:00
Johnathan Corgan 009101ee4a SessionDatagram forwarding handler with coordinate cache warming 
Add handle_session_datagram handler replacing the 0x40 dispatch stub.
Transit nodes now decode the datagram envelope, enforce hop limits,
warm coordinate caches from SessionSetup/SessionAck/DataPacket payloads,
route via find_next_hop, and generate CoordsRequired/PathBroken error
signals on routing failure.

14 new tests covering decode errors, hop limit enforcement, local
delivery, cache warming for all session message types, single-hop and
multi-hop forwarding through live node chains, error signal generation,
and cache warming enabling subsequent routing. 375 tests pass.
 2026-02-12 13:39:34 +00:00
Johnathan Corgan 62ce267677 Session message encode/decode, disconnect and routing integration tests 
Add encode/decode for all session-layer message types (SessionSetup,
SessionAck, DataPacket, CoordsRequired, PathBroken) and SessionDatagram
link-layer envelope. Wire format follows design doc §8.0-8.6 with
address-only coordinate serialization (16 bytes/entry).

Struct additions: handshake_payload on SessionSetup/SessionAck, flags
on SessionAck, optional src_coords/dest_coords on DataPacket for route
cache warming (COORDS_PRESENT flag).

New disconnect integration tests verify cascading cleanup in multi-node
networks: chain peer removal, star hub departure, chain partition with
bloom filter update verification, all reason codes.

New routing tests validate bloom-filter-only transit behavior and peer
removal effects: confirm transit nodes without cached coords return None
(loop prevention), routing stops after partition, source-only coords
insufficient for multi-hop delivery.

361 tests pass (up from 335), zero warnings.
 2026-02-12 13:01:29 +00:00
Johnathan Corgan 2f8e97c0ab Implement greedy routing with bloom filter priority 
Add the full next-hop routing algorithm to Node::find_next_hop():
- Local delivery, direct peer, bloom filter candidates, greedy tree
  routing fallback, with (link_cost, tree_distance, node_addr) ordering
- select_best_candidate() scores by peer→dest distance (not us→peer)
  with self-distance check to prevent routing loops
- TreeState::find_next_hop() for greedy tree routing with progress
  guarantee
- ActivePeer::link_cost() placeholder (constant 1.0) for future link
  quality metrics

Add routing tests including 100-node all-pairs reachability simulation
(9900/9900 delivered, 0 loops, avg 4.0 hops, max 8).

Update fips-routing.md to reflect bloom filter routing as the primary
forwarding mechanism, with greedy tree routing as fallback during
convergence windows.
 2026-02-11 16:55:14 +00:00
Johnathan Corgan 066865ddd7 Split protocol.rs into protocol/ directory, standardize imports, clean lib.rs 
- Replace use super::*; in node/lifecycle.rs with explicit imports,
  remove 10 resulting unused imports from node/mod.rs
- Split protocol.rs (1838 lines) into protocol/ directory:
  mod.rs (re-exports), error.rs, link.rs, tree.rs, filter.rs,
  discovery.rs, session.rs — each with co-located tests
- Remove unused flat re-exports from lib.rs for internal utility
  modules (wire, index, rate_limit, icmp, noise, tun)
- 316 tests pass, zero warnings
 2026-02-11 05:02:02 +00:00
Johnathan Corgan cc29c51cac Refactor node/handlers.rs and node/tests.rs into subdirectories 
Split handlers.rs (986 lines) into handlers/ with 5 subfiles organized
by responsibility: rx_loop, encrypted, handshake, dispatch, timeout.

Split tests.rs (2350 lines) into tests/ with 4 subfiles: unit tests,
handshake integration, spanning tree convergence, and bloom filter tests.
Shared test helpers extracted to tests/mod.rs.

Visibility adjusted from pub(super) to pub(in crate::node) for handler
methods now two levels deep. Unused imports cleaned up in node/mod.rs.

All 316 tests pass, zero warnings.
 2026-02-11 03:49:45 +00:00