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)
27 lines
1.4 KiB
C
27 lines
1.4 KiB
C
#ifndef PACKETTYPE_H
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#define PACKETTYPE_H
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#include <stdint.h>
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typedef enum {
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PACKET_TYPE_NONE = 0,
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PACKET_TYPE_HELLO = 1, // Hello, let's connect! Here's who I am, and what I have!
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PACKET_TYPE_ACK_HELLO = 2, // I received your hello, here's who I am and what I have (response to hello)
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PACKET_TYPE_FETCH_BLOCK = 3, // I want a Block
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PACKET_TYPE_BLOCK_DATA = 4, // Here's a Block (response to fetch) - I don't care what you do with it, but you wanted it, so here it is!
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PACKET_TYPE_BROADCAST_BLOCK = 5, // Here's a new Block I want to share with the network (unsolicited - e.g. just mined it)
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PACKET_TYPE_ACK_BLOCK = 6, // I have received your block, here's what I did with it (response to broadcast)
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PACKET_TYPE_BROADCAST_TX = 7, // Here's a new transaction I want to share with the network
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PACKET_TYPE_ACK_TX = 8, // I have received your transaction, here's what I did with it (response to broadcast)
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PACKET_TYPE_ERROR = 9, // Something went wrong with the packet you sent me, here's an error message (can be response to any packet)
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PACKET_TYPE_GET_PEERS = 10, // Who are your peers? Send me a few of them so I can discover more of the network
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PACKET_TYPE_PEERS = 11, // Here are some of my peers' listen endpoints (response to GET_PEERS)
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PACKET_TYPE_MAX = 12
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} packet_type_t;
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static inline int PacketType_IsValid(uint8_t packetType) {
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return packetType > PACKET_TYPE_NONE && packetType < PACKET_TYPE_MAX;
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}
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#endif
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