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cfb087a95d
fips-link-layer.md: - Rewrite Liveness Detection: explicit Heartbeat (0x51) with 10s interval and 30s dead timeout replaces vague gossip-as-heartbeat description - Add Auto-Reconnect section: MMP dead timeout triggers retry with unlimited backoff for auto_reconnect peers - Add Handshake Message Retry section: link + session layer resend with exponential backoff within timeout window - Add Heartbeat to Link Message Types table - Update Implementation Status with three new implemented features fips-configuration.md: - Add handshake_resend_interval_ms, handshake_resend_backoff, handshake_max_resends to rate_limit table - Add heartbeat_interval_secs, link_dead_timeout_secs to general table - Add peers[].auto_reconnect to peers table - Note auto-reconnect bypasses max_retries in retry section - Update complete reference YAML with all new parameters fips-wire-formats.md: - Rename 0x51 from reserved Keepalive to implemented Heartbeat - Update Disconnect reason 0x07 to Heartbeat liveness timeout testing/chaos/README.md: - Add runner.log to output files - Add Directed Outbound Configs subsection
FIPS Testing
Integration and simulation test harnesses for FIPS, using Docker containers running the full protocol stack.
Test Harnesses
static/ -- Static Docker Network
Fixed topologies (mesh, chain) with 5 nodes. Manual scripts for building, config generation, connectivity tests (ping, iperf), and network impairment (netem). Useful for deterministic debugging and validating specific topology configurations.
chaos/ -- Stochastic Simulation
Automated randomized testing with configurable node counts, topology algorithms (random geometric, Erdos-Renyi, chain), and fault injection (netem mutation, link flaps, traffic generation, node churn). Scenarios are defined in YAML and executed via a Python harness that manages the full lifecycle: topology generation, Docker orchestration, fault scheduling, log collection, and analysis.