Full-featured BitTorrent client package and utilities
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analysis Add peer upload order analysis 2021-01-28 16:31:13 +11:00
bencode Limit decoded bencode string lengths to 32 bits 2021-09-29 16:56:01 +10:00
cmd cmd/torrent: Don't make --stats default to --debug's value 2021-09-21 13:06:06 +10:00
common Got file storage working with segment index 2020-06-01 00:14:51 +10:00
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peer_protocol Fix scheduling overhead in decoding benchmark 2021-09-30 11:52:50 +10:00
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tracker Fix http announce of infohash containing ' ' bytes (#591) 2021-09-12 14:11:59 +10:00
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webtorrent Fix race in webtorrent dial stats 2021-05-14 15:42:25 +10:00
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deferrwl.go lockWithDeferreds: inlineable Unlock() (#603) 2021-09-17 13:08:00 +10:00
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doc.go BEP27 isn't implemented 2020-05-24 17:47:16 +10:00
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handshake_test.go Support AllowedFast and enable fast extension 2018-02-05 00:18:38 +11:00
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misc.go Rework Reader waiting 2021-09-04 23:07:32 +10:00
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multiless.go Fixes for wasm 2021-06-23 17:24:50 +10:00
network_test.go Fixes for wasm 2021-06-23 17:24:50 +10:00
networks.go Improve network handling and only listen networks we will use 2018-11-28 10:30:21 +11:00
peer-conn-msg-writer.go Avoid reallocating keep alive timer on each pass 2021-08-22 20:05:53 +10:00
peer-impl.go Apply next request state asynchronously 2021-06-07 13:01:40 +10:00
peer_info.go Don't expose Peer network through RemoteAddr 2021-01-25 15:49:48 +11:00
peer_infos.go Rename Peer to PeerInfo, and unexport PeerInfos 2020-05-29 19:44:48 +10:00
peerconn.go Switch Peer.PieceAllowedFast and several request strategy inputs to raw roaring.Bitmaps 2021-10-05 20:06:23 +11:00
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peerid.go Rename Peer to PeerInfo, and unexport PeerInfos 2020-05-29 19:44:48 +10:00
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pex.go Inlineable `addrIndex` (#673) 2021-09-27 12:41:20 +10:00
pex_test.go Add linter CI (#542) 2021-08-16 11:11:31 +10:00
pexconn.go PEX: impede full-meching in tracker-less swarms by adding a cooldown minute 2021-02-24 08:29:18 +11:00
pexconn_test.go Create default constructor for Client (#567) 2021-09-14 23:01:20 +10:00
piece.go Switch Peer.PieceAllowedFast and several request strategy inputs to raw roaring.Bitmaps 2021-10-05 20:06:23 +11:00
piecestate.go Track piece marking state separately 2020-11-21 13:44:23 +11:00
portfwd.go Big logging cleanup to improve experience from README 2021-05-04 12:44:51 +10:00
prioritized_peers.go Rename Peer to PeerInfo, and unexport PeerInfos 2020-05-29 19:44:48 +10:00
prioritized_peers_test.go Rename Peer to PeerInfo, and unexport PeerInfos 2020-05-29 19:44:48 +10:00
protocol.go Expose more callbacks and Request and ChunkSpec 2021-01-28 14:23:22 +11:00
ratelimitreader.go Fix download rate limiter and add test 2018-01-28 15:28:45 +11:00
reader.go go fmt ./... 2021-10-05 17:48:52 +11:00
reader_test.go Replace internal/tmproot with Testing.TB.TempDir 2021-02-22 14:30:09 +11:00
requesting.go Switch Peer.PieceAllowedFast and several request strategy inputs to raw roaring.Bitmaps 2021-10-05 20:06:23 +11:00
requesting_test.go Add some tests verifying request map ordering 2021-09-18 13:50:55 +10:00
rlreader_test.go Drop bradfitz/iter dependency (#605) 2021-09-14 13:46:50 +10:00
roaring.go Track dirty chunks in a single bitmap on Torrent 2021-09-20 18:52:54 +10:00
socket.go Fixes for wasm 2021-06-23 17:24:50 +10:00
spec.go Fix allocation of empty DhtNodes in TorrentSpec 2021-08-11 12:27:00 +10:00
struct_test.go Export Peer 2021-01-25 15:49:48 +11:00
t.go go fmt ./... 2021-10-05 17:48:52 +11:00
testing.go Set testing keep alive timeout to 1 millisecond 2021-08-19 13:37:00 +10:00
torrent.go Change Peer._peerPieces to use raw roaring Bitmap type 2021-10-05 17:48:34 +11:00
torrent_mmap_test.go Remove old-style build tags 2021-10-07 09:12:17 +11:00
torrent_pending_pieces.go Use stable bit set for pending pieces PriorityBitmap 2020-02-27 18:33:44 +11:00
torrent_stats.go Add doc comments related to #383 2020-03-16 16:30:39 +11:00
torrent_test.go Track dirty chunks in a single bitmap on Torrent 2021-09-20 18:52:54 +10:00
tracker_scraper.go Rework Reader waiting 2021-09-04 23:07:32 +10:00
url-net-addr.go Generate a RemoteAddr for webseed Peers 2021-01-25 15:49:48 +11:00
utp.go Add support for disabling IPv4 and IPv4 peers 2018-02-16 10:46:11 +11:00
utp_go.go Fix go:build directives 2021-07-14 14:35:52 +10:00
utp_libutp.go Remove old-style build tags 2021-10-07 09:12:17 +11:00
utp_test.go Use the new firewall callback support in go-libutp 2018-07-25 17:11:09 +10:00
webrtc.go Upgrade to pion/webrtc@v3 2021-02-21 13:46:37 -08:00
webseed-peer.go Store peer requests in a bitmap 2021-09-19 15:16:37 +10:00
worst_conns.go Export Peer 2021-01-25 15:49:48 +11:00
wstracker.go Fix crash when announcing unloaded torrent to websocket 2020-05-03 14:10:46 +10:00

README.md

torrent

PkgGoDev

This repository implements BitTorrent-related packages and command-line utilities in Go. The emphasis is on use as a library from other projects. It's been used 24/7 in production by downstream services since late 2014. The implementation was specifically created to explore Go's concurrency capabilities, and to include the ability to stream data directly from the BitTorrent network. To this end it supports seeking, readaheads and other features exposing torrents and their files with the various Go idiomatic io package interfaces. This is also demonstrated through torrentfs.

There is support for protocol encryption, DHT, PEX, uTP, and various extensions. There are several data storage backends provided: blob, file, bolt, mmap, and sqlite, to name a few. You can write your own to store data for example on S3, or in a database.

Some noteworthy package dependencies that can be used for other purposes include:

Installation

Install the library package with go get github.com/anacrolix/torrent, or the provided cmds with go install github.com/anacrolix/torrent/cmd/...@latest.

Library examples

There are some small examples in the package documentation.

Mentions

Downstream projects

There are several web-frontends and Android clients among the known public projects:

Help

Communication about the project is primarily through Discussions and the issue tracker.

Command packages

Here I'll describe what some of the packages in ./cmd do. See installation to make them available.

torrent

torrent download

Downloads torrents from the command-line.

$ torrent download 'magnet:?xt=urn:btih:KRWPCX3SJUM4IMM4YF5RPHL6ANPYTQPU'
... lots of jibba jabber ...
downloading "ubuntu-14.04.2-desktop-amd64.iso": 1.0 GB/1.0 GB, 1989/1992 pieces completed (1 partial)
2015/04/01 02:08:20 main.go:137: downloaded ALL the torrents
$ md5sum ubuntu-14.04.2-desktop-amd64.iso
1b305d585b1918f297164add46784116  ubuntu-14.04.2-desktop-amd64.iso
$ echo such amaze
wow

torrent metainfo magnet

Creates a magnet link from a torrent file. Note the extracted trackers, display name, and info hash.

$ torrent metainfo testdata/debian-10.8.0-amd64-netinst.iso.torrent magnet
magnet:?xt=urn:btih:4090c3c2a394a49974dfbbf2ce7ad0db3cdeddd7&dn=debian-10.8.0-amd64-netinst.iso&tr=http%3A%2F%2Fbttracker.debian.org%3A6969%2Fannounce

See torrent metainfo --help for other metainfo related commands.

torrentfs

torrentfs mounts a FUSE filesystem at -mountDir. The contents are the torrents described by the torrent files and magnet links at -metainfoDir. Data for read requests is fetched only as required from the torrent network, and stored at -downloadDir.

$ mkdir mnt torrents
$ torrentfs -mountDir=mnt -metainfoDir=torrents &
$ cd torrents
$ wget http://releases.ubuntu.com/14.04.2/ubuntu-14.04.2-desktop-amd64.iso.torrent
$ cd ..
$ ls mnt
ubuntu-14.04.2-desktop-amd64.iso
$ pv mnt/ubuntu-14.04.2-desktop-amd64.iso | md5sum
996MB 0:04:40 [3.55MB/s] [========================================>] 100%
1b305d585b1918f297164add46784116  -