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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 Make TorrentSpecFromMetaInfoErr still usable on info error 2021-11-12 10:46:35 +11:00
struct_test.go Export Peer 2021-01-25 15:49:48 +11:00
t.go Provide context to readahead func 2021-11-15 00:53:42 +11:00
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torrent.go Avoid calling net.Conn methods with the Client mutex locked 2021-11-17 14:00:50 +11:00
torrent_mmap_test.go Revert "Remove old-style build tags" 2021-11-01 11:26:58 +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 TorrentStats.PiecesComplete 2021-10-07 13:50:13 +11:00
torrent_test.go Support minimum peer extensions 2021-10-25 20:52:44 +11:00
tracker_scraper.go gofumpt 2021-11-08 14:47:01 +11:00
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 Revert "Remove old-style build tags" 2021-11-01 11:26:58 +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 Improve error handling for bad webseeds 2021-11-12 14:43:22 +11:00
worst_conns.go Export Peer 2021-01-25 15:49:48 +11:00
wstracker.go Fix race running and closing webtorrent tracker clients 2021-10-25 16:15:42 +11:00

README.md

torrent

godocs.io

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  -