Metatorrent

A BitTorrent metainfo decoder.

Metatorrent decodes metainfo files (also known as .torrent files), and sticks some additional useful information into the map, like the info hash, and the total length for multi-file torrents.

For example, here’s the linuxmint-18.3-cinnamon-64bit.iso metainfo file, decoded:

iex> Metatorrent.decode(File.read! "linuxmint-18.3-cinnamon-64bit.iso.torrent")
%Metatorrent.Metainfo{
  announce: "https://torrents.linuxmint.com/announce.php",
  announce_list: [],
  nodes: [],
  comment: nil,
  created_by: "Transmission/2.84 (14307)",
  creation_date: ~U[2017-11-27 09:27:31Z],
  info: %Metatorrent.SingleFileInfo{
    length: 1899528192,
    md5sum: nil,
    name: "linuxmint-18.3-cinnamon-64bit.iso",
    piece_length: 1048576,
    pieces: [
      <<167, 53, 69, 58, 13, 103, 134, 251, 174, 104, 105, 210, 94, 112, 197, 52,
  205, 246, 155, 130>>,
      ...
    ]
  },
  info_hash: <<210, 229, 63, 182, 3, 101, 45, 153, 25, 145, 182, 173, 35, 87,
    167, 162, 132, 90, 83, 25>>
}

Supported BEPs

This library was built for Effusion and so only supports the BEPs that Effusion supports. Full list of BEPs.

Installation

If available in Hex, the package can be installed by adding metatorrent to your list of dependencies in mix.exs:

def deps do
  [
    {:metatorrent, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/metatorrent.