bittorrent-tracker

bittorrent-tracker

Simple, robust, BitTorrent tracker (client & server) implementation

Node.js implementation of a BitTorrent tracker, client and server.

A BitTorrent tracker is an HTTP service which responds to GET requests from BitTorrent clients. The requests include metrics from clients that help the tracker keep overall statistics about the torrent. The response includes a peer list that helps the client participate in the torrent.

Also see BitTorrent DHT. This module is used by WebTorrent.

install

npm install bittorrent-tracker

usage

To connect to a tracker, just do this:

var Client = require('bittorrent-tracker').Client
var parseTorrent = require('parse-torrent')

var torrent = fs.readFileSync(__dirname + '/torrents/bitlove-intro.torrent')
var parsedTorrent = parseTorrent(torrent) // { infoHash: 'xxx', length: xx, announce: ['xx', 'xx'] }

var peerId = new Buffer('01234567890123456789')
var port = 6881

var client = new Client(peerId, port, parsedTorrent)

// you must add an 'error' event handler!
client.on('error', function (err) {
  console.log(err.message)
  // a tracker was unavailable or sent bad data to the client. you can probably ignore it
})

client.start() // start getting peers from the tracker

client.on('update', function (data) {
  console.log('got a response from tracker: ' + data.announce)
  console.log('number of seeders on this tracker: ' + data.complete)
  console.log('number of leechers on this tracker: ' + data.incomplete)
})

client.once('peer', function (addr) {
  console.log('found a peer: ' + addr) // 85.10.239.191:48623
})

client.complete() // announce that download has completed (and you are now a seeder)

client.update() // force a tracker announce. will trigger more 'update' events and maybe more 'peer' events

client.stop() // stop getting peers from the tracker, gracefully leave the swarm

TODO: Add BitTorrent tracker server implementation!

var Server = require('bittorrent-tracker').Server

license

MIT. Copyright (c) Feross Aboukhadijeh.