dcrubro
21fe73fb01
- Implement NodeDiscovery engine: known-peer table (DynArr) with a per-tick seed/ping/query/connect state machine driven by the node maintenance thread; bounded multi-hop crawl (FANOUT peers per node, hop-capped) that connects to reachable peers lowest-ping-first - Add GET_PEERS/PEERS TCP opcodes for peer-list exchange, handled on both inbound and outbound connections - Measure UDP round-trip time and pass it to the on_pong callback (previously the send timestamp was only used for retries) - Advertise each node's listen port in HELLO/ACK_HELLO and store it per-connection, so inbound-only peers and non-default ports are discoverable (length-guarded parse; wire-compatible with old peers) - Wire a udp_node_t + node_discovery_t into net_node_t: init/start in Node_Create, tick in the maintenance loop, teardown in Node_Destroy (stop UDP before destroying discovery to avoid callback races) - Add Node_ConnListenEndpoint / Node_GetPeerEndpoints helpers to derive peers' listen endpoints (outbound: dialed port; inbound: advertised), with IPv4-mapped-IPv6 normalization and IP+port dedup - Match ping pong/timeout callbacks by peer address (the UDP layer owns the nonce), fixing discovered peers stuck UNREACHABLE - Ping the peer's listen port instead of the ephemeral TCP source port (fixes the original stub so pongs actually return) - Add `peers` CLI command to dump the discovery table (endpoint/hop/ state/ping) - Add discovery tunables to constants.h (fanout, max hops, target connections, timeouts, caps)
15 lines
341 B
C
15 lines
341 B
C
#ifndef UDP_PACKET_TYPE_H
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#define UDP_PACKET_TYPE_H
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typedef enum {
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UDP_PACKET_TYPE_NONE = 0,
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UDP_PACKET_TYPE_PING = 1,
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UDP_PACKET_TYPE_PONG = 2,
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} udp_packet_type_t;
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// Wire sizes in bytes
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#define UDP_PING_WIRE_SIZE 9 // 1 (type) + 8 (nonce)
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#define UDP_PONG_WIRE_SIZE 13 // 1 (type) + 8 (nonce) + 4 (proto_version)
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#endif
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