bittorrent-dht

bittorrent-dht

Simple, robust, BitTorrent DHT implementation

Node.js implementation of the BitTorrent DHT protocol. BitTorrent DHT is the main peer discovery layer for BitTorrent, which allows for trackerless torrents. DHTs are awesome!

This module is used by WebTorrent. Works in the browser with browserify and a dgram shim (like chrome-dgram for chrome apps).

install

npm install bittorrent-dht

example

var DHT    = require('bittorrent-dht');
var magnet = require('magnet-uri');

var uri = "magnet:?xt=urn:btih:e3811b9539cacff680e418124272177c47477157&dn=Ubuntu+13.10+Desktop+Live+ISO+amd64";
var parsed = magnet(uri);

var dht = new DHT();

dht.on('peer', function (addr, hash) {
  console.log('Found peer at ' + addr + '!');
});

dht.setInfoHash(parsed.infoHash);

var port = 20000;
dht.listen(port, function (port) {
  console.log("Now listening on port " + port);
});

dht.findPeers();

methods

setInfoHash(infoHash)

Associate an infoHash with the DHT object. Can be a String or Buffer.

dht.listen([port], [callback])

Open the socket. If port is undefined, one is picked with portfinder. callback is equivalent to listening event.

findPeers([num])

Get num peers from the DHT. Defaults to unlimited.

events

'peer'

function (addr, infoHash){ ... }

Called when a peer is found. addr is of the form IP_ADDRESS:PORT

'message'

function (data, rinfo){ ... }

Called when a message is received. rinfo is an object with properties address, port

'node'

function (addr){ ... }

Called when client finds a new DHT node.

'listening'

function () { ... }

'error'

function (err){ ... }

license

MIT. Copyright (c) Feross Aboukhadijeh.