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Johnathan Corgan
71a5c68fa9
Add 71 new counters (84 values) across three categories: Node statistics (NodeStats, plain u64 — single handler context): - Forwarding: 9 counters x (packets + bytes) = 18 values. Covers received, decode_error, ttl_exhausted, delivered, forwarded, drop_no_route, drop_mtu_exceeded, drop_send_error, originated. - Discovery: 17 counters (packets only). Request path: received, decode_error, duplicate, already_visited, target_is_us, forwarded, ttl_exhausted, initiated, deduplicated. Response path: received, decode_error, forwarded, identity_miss, proof_failed, accepted, timed_out. - Error signals: 3 counters — coords_required, path_broken, mtu_exceeded. - Spanning tree: 16 counters. Inbound announce handling (received through accepted, parent switch, loop detection, ancestry change), outbound (sent, rate limited, send failed), cumulative events (parent switches/losses, flap dampening). - Bloom filter: 10 counters. Inbound (received through accepted), outbound (sent, debounce suppressed, send failed). Transport statistics (AtomicU64 + Arc — shared with spawned tasks): - UDP (6 counters, 8 values): packets/bytes sent/recv, send_errors, recv_errors, mtu_exceeded, kernel_drops (stub for SO_MEMINFO). - TCP (10 counters, 12 values): packets/bytes sent/recv, send_errors, recv_errors, mtu_exceeded, plus connection lifecycle counters (established, accepted, rejected, timeouts, refused). Control socket integration: - show_routing: forwarding, discovery, error signal stats - show_tree: spanning tree stats + per-peer bloom metrics (estimated_count, set_bits, fill_ratio) and coordinate paths - show_bloom: bloom filter stats + per-peer snapshots - show_transports: per-transport stats snapshots Also refactor UDP transport from flat files (udp.rs + udp_stats.rs) into directory module (udp/mod.rs + udp/stats.rs) matching TCP structure, and fix pre-existing clippy warnings in tree/tests.rs.