Bittorrent encoding in ruby
BEncoder will encode the 4 data types in the specification:
- Strings
- Integers
- Arrays
- Hashes
Additionally, it will pass symbols as strings, to allow for easier hash convertion.
install with
gem install bencoder
Usage is easy:
BEncoder.encode "herp"
=> "4:herp"
BEncoder.decode "4:herp"
=> "herp"
BEncoder.encode ['what', 'strange', { data: 'I', have: 'here' }, 666]
=> "l4:what7:stranged4:data1:I4:have4:hereei666ee"
BEncoder.decode 'l4:what7:stranged4:data1:I4:have4:hereei666ee'
=> ['what', 'strange', { 'data' => 'I', 'have' => 'here' }, 666]Since .torrent files are bencode dicts, you can parse them out of the box
BEncoder.decode File.read('sample.torrent')
=> {"announce"=>"udp://tracker.openbittorrent.com:80", "creation date"=>1327049827, "info"=>{"length"=>20, "name"=>"sample.txt", "piece length"=>65536, "pieces"=>"\\\xC5\xE6R\xBE\r\xE6\xF2x\x05\xB3\x04d\xFF\x9B\x00\xF4\x89\xF0\xC9", "private"=>1}}