2178d6a70c
A maintainable, extensible BitTorrent client (C11, Linux/io_uring) targeting 10 GbE saturation. All torrent functionality is built from scratch; liburing is the only linked third-party dependency on the data path. Implements Phases 1-7 of the roadmap: - core: page-aligned buffer pool, MPMC/Treiber queues, bitfields, worker pool - crypto: SHA-1/256 (SHA-NI + scalar), Merkle (BEP-52), RC4 (MSE) - bencode/metainfo: zero-copy parser, v1/v2/hybrid .torrent + magnet - peer: sans-IO wire codec, MSE/PE handshake state machine, BEP-10, ut_metadata, PEX - piece/storage: block-level multi-peer engine, rarest-first + endgame, per-file completion events + single-file relocate (move-as-you-finish) - tracker/dht: HTTP + UDP (BEP-15) trackers, BEP-5 KRPC iterative lookup - platform: io_uring reactor (SQPOLL, registered buffers, SEND_ZC) - surface: versioned RPC, native plugin ABI, sandboxed Lua scripting, nautd/nautctl Verified against libtorrent (single/multi/hybrid, MSE, magnet-via-DHT, swarm); unit + interop tests green; ASan/UBSan/TSan clean. Scripting reference in docs/scripting.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
26 lines
969 B
C
26 lines
969 B
C
/* net.h — socket setup (the kernel-facing seam, part 1).
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*
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* All socket option choices that matter for 10 GbE live here: SO_REUSEPORT so
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* each reactor owns a listen queue and the kernel shards inbound peers across
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* cores, TCP_NODELAY (BitTorrent is latency-sensitive on small control msgs),
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* and large socket buffers so the BDP fits.
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*/
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#ifndef NAUT_NET_H
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#define NAUT_NET_H
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#include "naut/common.h"
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#include <netinet/in.h>
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/* Create a TCP listener bound to `port`. With reuseport=true, multiple reactors
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* may each create one on the same port and the kernel load-balances accepts. */
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int naut_net_listen(uint16_t port, int backlog, bool reuseport);
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/* Tune an accepted/connected peer socket for throughput. */
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void naut_net_tune_peer(int fd);
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/* Set send/recv socket buffer sizes (bytes); 0 leaves the kernel default. */
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void naut_net_set_bufsizes(int fd, int sndbuf, int rcvbuf);
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int naut_net_set_nonblock(int fd, bool on);
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#endif /* NAUT_NET_H */
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