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>
37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
#!/usr/bin/env python3
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"""Seed a .torrent with libtorrent on 127.0.0.1 and print the listen port.
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Usage: seeder.py <file.torrent> <save_path>
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Runs until killed. Prints 'PORT <n>' once it is seeding."""
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import libtorrent as lt, os, sys, time
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enc_policy = 0 if os.environ.get("NAUT_FORCE_MSE") == "1" else 1
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torrent, save_path = sys.argv[1], sys.argv[2]
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ses = lt.session({
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"listen_interfaces": "127.0.0.1:0",
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"unchoke_slots_limit": 64, # unchoke leechers fast
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"in_enc_policy": enc_policy,
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"out_enc_policy": enc_policy,
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"alert_mask": lt.alert_category.all,
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})
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atp = lt.add_torrent_params()
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atp.ti = lt.torrent_info(torrent)
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atp.save_path = save_path
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atp.flags |= lt.torrent_flags.seed_mode # data already present; skip recheck
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atp.flags &= ~lt.torrent_flags.paused # must be active to accept peers
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atp.flags &= ~lt.torrent_flags.auto_managed # don't let the queue re-pause it
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h = ses.add_torrent(atp)
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h.resume()
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deadline = time.time() + 30
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while not h.status().is_seeding and time.time() < deadline:
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time.sleep(0.05)
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if not h.status().is_seeding:
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print("ERROR: not seeding", flush=True); sys.exit(1)
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print("PORT %d" % ses.listen_port(), flush=True)
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while True:
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for a in ses.pop_alerts():
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print("ALERT %s: %s" % (type(a).__name__, a.message()), flush=True)
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time.sleep(0.2)
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