Full-featured BitTorrent client package and utilities
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Matt Joiner a11739a667
Attempt holepunch after initial dial fails
2023-05-11 13:03:54 +10:00
.circleci Don't bench with -race 2021-02-24 13:48:05 +11:00
.github Update codeql analysis to v2 (#806) 2023-01-31 08:41:06 +11:00
analysis gorond ./... 2022-11-15 23:31:27 +11:00
bencode bencode: Only use unsafe.String for go>=1.20 2023-04-03 15:10:38 +10:00
cmd gofumpt 2023-02-18 18:35:22 +11:00
common Got file storage working with segment index 2020-06-01 00:14:51 +10:00
dialer Move a bunch of stuff into subpackages 2022-11-15 23:31:26 +11:00
fs Fix godo use in torrentfs CI 2022-11-29 10:29:50 +11:00
internal Add stats for connections that only occur due to holepunching 2023-05-09 15:46:52 +10:00
iplist gofumpt 2021-11-08 14:47:01 +11:00
logonce
metainfo gofumpt 2023-02-18 18:35:22 +11:00
mmap_span gorond ./... 2022-11-15 23:31:27 +11:00
mse gorond ./... 2022-11-15 23:31:27 +11:00
peer_protocol Attempt holepunch after initial dial fails 2023-05-11 13:03:54 +10:00
request-strategy Camel case requestStrategy package 2023-04-29 14:54:49 +10:00
segments gofumpt 2021-11-08 14:47:01 +11:00
smartban Implement smart ban using generics 2022-01-22 18:43:04 +11:00
storage gofumpt 2023-02-18 18:35:22 +11:00
test Misc debug status, pex conn tracking improvements 2023-05-01 10:19:24 +10:00
testdata Add sintel.torrent 2021-12-12 15:01:50 +11:00
tests/issue-798 gorond 2023-01-04 01:26:31 +11:00
tracker gorond 2023-03-01 12:34:35 +11:00
typed-roaring Use reusable roaring iterators 2022-05-12 10:42:16 +10:00
types Move a bunch of stuff into subpackages 2022-11-15 23:31:26 +11:00
util/dirwatch gorond ./... 2022-11-15 23:31:27 +11:00
version Update and expose default client identifiers 2021-06-25 11:29:59 +10:00
webseed Don't use path.Join in default webseed path escaper 2022-12-25 18:20:42 +11:00
webtorrent Import generics as g 2023-04-04 19:12:26 +10:00
.deepsource.toml Update .deepsource.toml 2022-02-21 21:23:20 +00:00
.gitignore Ignore request strategy run gobs and envrcs 2021-10-19 14:08:56 +11:00
.golangci.yml Update staticcheck go target to 1.16 2021-08-19 16:06:24 +10:00
LICENSE
NOTES.md Add more hole punching NOTES 2023-05-09 15:45:52 +10:00
README.md Add exatorrent and finish tidying downstream projects 2022-06-25 17:28:23 +10:00
SECURITY.md Create SECURITY.md 2021-05-14 10:17:19 +10:00
TODO
bad_storage.go Rework storage.TorrentImpl to support shared capacity key 2021-06-07 13:01:39 +10:00
bep40.go Move IpPort to missinggo 2018-11-16 10:35:30 +11:00
bep40_test.go Use webrtc local addr for webrtc conn peer priority 2022-07-12 15:52:03 +10:00
callbacks.go Expose more callbacks and Request and ChunkSpec 2021-01-28 14:23:22 +11:00
client-nowasm_test.go Revert "Remove old-style build tags" 2021-11-01 11:26:58 +11:00
client-stats.go Add stats for connections that only occur due to holepunching 2023-05-09 15:46:52 +10:00
client.go Attempt holepunch after initial dial fails 2023-05-11 13:03:54 +10:00
client_test.go Dial TCP with the listener's local addr 2023-05-09 15:45:52 +10:00
config.go Limit peer request data allocation 2023-02-14 12:46:49 +11:00
conn_stats.go Track chunks read for webseed peers too 2021-06-07 13:01:40 +10:00
deferrwl.go lockWithDeferreds: inlineable Unlock() (#603) 2021-09-17 13:08:00 +10:00
dht.go Don't wait for DHT pings 2021-12-23 14:00:00 +11:00
dial-pool.go Attempt holepunch after initial dial fails 2023-05-11 13:03:54 +10:00
dialer.go Move a bunch of stuff into subpackages 2022-11-15 23:31:26 +11:00
doc.go New go fmt on doc comments 2022-12-07 10:44:05 +11:00
example_test.go
file.go use rLock where can, part2 (#767) 2022-07-13 20:04:03 +10:00
file_test.go gofumpt 2021-11-08 14:47:01 +11:00
global.go Add many more extension bit definitions 2023-05-09 15:46:53 +10:00
go.mod go mod tidy 2023-05-09 15:45:52 +10:00
go.sum Synchronize holepunch connect messages with existing rendezvous 2023-05-09 15:45:50 +10:00
handshake.go Add the ReceiveEncryptedHandshakeSkeys callback 2020-11-05 13:28:45 +11:00
handshake_test.go
ipport.go Possible fix for GitHub code scanning warning 2021-05-14 15:43:13 +10:00
issue97_test.go test: use `T.TempDir` to create temporary test directory (#718) 2022-02-02 18:26:46 +11:00
issue211_test.go Fix leaked mmap storage in test 2021-12-16 14:19:21 +11:00
listen.go Optimize `LoopbackListenHost()` (#615) 2021-09-14 21:54:37 +10:00
main_test.go Replace internal/tmproot with Testing.TB.TempDir 2021-02-22 14:30:09 +11:00
misc.go gofumpt 2023-02-18 18:35:22 +11:00
misc_test.go Drop bradfitz/iter dependency (#605) 2021-09-14 13:46:50 +10:00
netip-addrport.go Misc debug status, pex conn tracking improvements 2023-05-01 10:19:24 +10:00
network_test.go Pass client logger to anacrolix/go-libutp sockets (#722) 2022-02-15 16:18:32 +11:00
networks.go Improve network handling and only listen networks we will use 2018-11-28 10:30:21 +11:00
ordered-bitmap.go Import generics as g 2023-04-04 19:12:26 +10:00
otel.go webtorrent: Create data channel earlier per webrtc examples 2022-07-12 16:15:50 +10:00
peer-conn-msg-writer.go Fix write error handling 2022-12-25 19:24:16 +11:00
peer-impl.go Sleep webseed peers after unhandled errors 2022-12-31 11:27:47 +11:00
peer.go Drop peer request alloc reservations when peer is closed 2023-05-09 15:46:53 +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 Add many more extension bit definitions 2023-05-09 15:46:53 +10:00
peerconn_test.go Locate target peer using dial addr when receiving a holepunch rendezvous 2023-05-09 15:46:51 +10:00
peerid.go Move a bunch of stuff into subpackages 2022-11-15 23:31:26 +11:00
peerid_test.go
pending-requests.go Revert "Use a flat slice for pending request counts" 2021-11-25 22:55:02 +11:00
pending-requests_test.go Comment out pending requests tests and asserts 2021-11-25 22:59:20 +11:00
pex.go Rate limit received PEX messages per connection 2023-05-01 10:19:26 +10:00
pex_test.go PEX: fluid event log 2021-12-12 00:27:28 +11:00
pexconn.go Order peer conn status by peer priority and show webseeds separately 2023-05-01 10:19:26 +10:00
pexconn_test.go Use webrtc local addr for webrtc conn peer priority 2022-07-12 15:52:03 +10:00
piece.go gorond ./... 2022-11-15 23:31:27 +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 prioritized_peers go files 2023-04-29 14:54:49 +10:00
prioritized-peers_test.go Rename prioritized_peers go files 2023-04-29 14:54:49 +10:00
protocol.go Expose more callbacks and Request and ChunkSpec 2021-01-28 14:23:22 +11:00
ratelimitreader.go
reader.go Fix races around Reader and Torrent.Drop when Torrent is closed 2022-04-11 15:44:24 +10:00
reader_test.go Replace internal/tmproot with Testing.TB.TempDir 2021-02-22 14:30:09 +11:00
request-strategy-impls.go Add and use typed roaring bitmap 2022-05-09 12:05:50 +10:00
requesting.go Camel case requestStrategy package 2023-04-29 14:54:49 +10:00
requesting_test.go Shuffle duplicate requests 2021-12-12 16:56:00 +11:00
reuse_test.go Fix race in TestUtpLocalPortIsReusable 2023-05-09 15:46:52 +10:00
rlreader_test.go Drop bradfitz/iter dependency (#605) 2021-09-14 13:46:50 +10:00
roaring.go Add and use typed roaring bitmap 2022-05-09 12:05:50 +10:00
smartban.go Import generics as g 2023-04-04 19:12:26 +10:00
socket.go Don't dial out TCP from the listen port 2023-05-09 15:45:52 +10:00
sockopts.go Dial TCP with the listener's local addr 2023-05-09 15:45:52 +10:00
sockopts_unix.go Dial TCP with the listener's local addr 2023-05-09 15:45:52 +10:00
sockopts_wasm.go Dial TCP with the listener's local addr 2023-05-09 15:45:52 +10:00
sockopts_windows.go Dial TCP with the listener's local addr 2023-05-09 15:45:52 +10:00
sources.go Don't log using torrent source as warning for context cancellation 2023-04-04 19:13:14 +10:00
spec.go WebSeed PathEscaper API tweaks 2022-04-26 10:46:01 +10:00
stats.go Add Client.Stats with ActiveHalfOpenAttempts 2023-05-09 15:46:52 +10:00
string-addr.go Expose StringAddr 2023-04-03 15:10:54 +10:00
struct_test.go Export Peer 2021-01-25 15:49:48 +11:00
t.go use rLock where can, part2 (#767) 2022-07-13 20:04:03 +10:00
test_test.go Add TestHaveAllThenBitfield 2021-12-23 14:00:00 +11:00
testing.go gorond ./... 2022-11-15 23:31:27 +11:00
torrent-piece-request-order.go Switch to ajwerner/btree in piece request ordering 2022-01-22 18:40:33 +11:00
torrent-stats.go Add Client.Stats with ActiveHalfOpenAttempts 2023-05-09 15:46:52 +10:00
torrent.go Attempt holepunch after initial dial fails 2023-05-11 13:03:54 +10:00
torrent_mmap_test.go Revert "Remove old-style build tags" 2021-11-01 11:26:58 +11:00
torrent_test.go Add many more extension bit definitions 2023-05-09 15:46:53 +10:00
tracker_scraper.go Rename some HTTP identifiers to Http 2022-11-29 10:45:38 +11:00
undirtied-chunks-iter.go Use reusable roaring iterators 2022-05-12 10:42:16 +10:00
undirtied-chunks-iter_test.go Use reusable roaring iterators 2022-05-12 10:42:16 +10:00
url-net-addr.go Generate a RemoteAddr for webseed Peers 2021-01-25 15:49:48 +11:00
ut-holepunching.go Attempt holepunch after initial dial fails 2023-05-11 13:03:54 +10:00
ut-holepunching_test.go Attempt holepunch after initial dial fails 2023-05-11 13:03:54 +10:00
utp.go
utp_go.go Pass client logger to anacrolix/go-libutp sockets (#722) 2022-02-15 16:18:32 +11:00
utp_libutp.go Pass client logger to anacrolix/go-libutp sockets (#722) 2022-02-15 16:18:32 +11:00
utp_test.go Pass client logger to anacrolix/go-libutp sockets (#722) 2022-02-15 16:18:32 +11:00
webrtc.go gorond ./... 2022-11-15 23:31:27 +11:00
webseed-peer.go Sleep webseed peers after unhandled errors 2022-12-31 11:27:47 +11:00
worse-conns.go Try to balance incoming and outgoing conns per torrent 2023-04-29 14:54:49 +10:00
worse-conns_test.go Optimize the use of worstConnSlice again 2021-11-29 10:07:48 +11:00
wstracker.go Add customer headers when dialling WS connection to tracker (#789) 2022-12-08 09:17:33 +11:00

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, sites, Android clients and supporting services 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  -