magnet-uri

magnet-uri

Parse a magnet URI and return an object of keys/values.

Also works in the browser with browserify! This module is used by WebTorrent.

install

npm install magnet-uri

usage

decode

Parse a magnet URI and return an object of keys/values.

import magnet from 'magnet-uri'

// "Leaves of Grass" by Walt Whitman
const uri = 'magnet:?xt=urn:btih:d2474e86c95b19b8bcfdb92bc12c9d44667cfa36&dn=Leaves+of+Grass+by+Walt+Whitman.epub&tr=udp%3A%2F%2Ftracker.example4.com%3A80&tr=udp%3A%2F%2Ftracker.example5.com%3A80&tr=udp%3A%2F%2Ftracker.example3.com%3A6969&tr=udp%3A%2F%2Ftracker.example2.com%3A80&tr=udp%3A%2F%2Ftracker.example1.com%3A1337'

const parsed = magnet.decode(uri)
console.log(parsed.dn) // "Leaves of Grass by Walt Whitman.epub"
console.log(parsed.infoHash) // "d2474e86c95b19b8bcfdb92bc12c9d44667cfa36"

The parsed magnet link object looks like this:

  {
    "xt": "urn:btih:d2474e86c95b19b8bcfdb92bc12c9d44667cfa36",
    "dn": "Leaves of Grass by Walt Whitman.epub",
    "tr": [
      "udp://tracker.example1.com:1337",
      "udp://tracker.example2.com:80",
      "udp://tracker.example3.com:6969",
      "udp://tracker.example4.com:80",
      "udp://tracker.example5.com:80"
    ],

    // added for convenience:
    "infoHash": "d2474e86c95b19b8bcfdb92bc12c9d44667cfa36",
    "infoHashBuffer": ...,
    "name": "Leaves of Grass by Walt Whitman.epub",
    "announce": [
      "udp://tracker.example1.com:1337",
      "udp://tracker.example2.com:80",
      "udp://tracker.example3.com:6969",
      "udp://tracker.example4.com:80",
      "udp://tracker.example5.com:80"
    ]
  }

encode

Convert an object of key/values into a magnet URI string.

import magnet from 'magnet-uri'

const uri = magnet.encode({
  xt: [
    'urn:ed2k:354B15E68FB8F36D7CD88FF94116CDC1',
    'urn:tree:tiger:7N5OAMRNGMSSEUE3ORHOKWN4WWIQ5X4EBOOTLJY',
    'urn:btih:QHQXPYWMACKDWKP47RRVIV7VOURXFE5Q'
  ],
  xl: '10826029',
  dn: 'mediawiki-1.15.1.tar.gz',
  tr: [
    'udp://tracker.openbittorrent.com:80/announce'
  ],
  as: 'http://download.wikimedia.org/mediawiki/1.15/mediawiki-1.15.1.tar.gz',
  xs: [
    'http://cache.example.org/XRX2PEFXOOEJFRVUCX6HMZMKS5TWG4K5',
    'dchub://example.org'
  ]
})

console.log(uri) // the magnet uri

The returned magnet uri will be:

magnet:?xt=urn:ed2k:354B15E68FB8F36D7CD88FF94116CDC1&xt=urn:tree:tiger:7N5OAMRNGMSSEUE3ORHOKWN4WWIQ5X4EBOOTLJY&xt=urn:btih:QHQXPYWMACKDWKP47RRVIV7VOURXFE5Q&xl=10826029&dn=mediawiki-1.15.1.tar.gz&tr=udp%3A%2F%2Ftracker.openbittorrent.com%3A80%2Fannounce&as=http%3A%2F%2Fdownload.wikimedia.org%2Fmediawiki%2F1.15%2Fmediawiki-1.15.1.tar.gz&xs=http%3A%2F%2Fcache.example.org%2FXRX2PEFXOOEJFRVUCX6HMZMKS5TWG4K5&xs=dchub%3A%2F%2Fexample.org

You can also use convenience key names like name (dn), infoHash (xt), infoHashBuffer (xt), publicKey (xs), publicKeyBuffer (xs), announce (tr), and keywords (kt).

license

MIT. Copyright (c) Feross Aboukhadijeh and WebTorrent, LLC.

Changelog

7.0.7 (2025-01-04)

Bug Fixes

• deps: update dependency uint8-util to ^2.2.5 (#78) (eac2d64)