Description: ------------ I'm having some problems with decoding a torrent and generating an info_hash. (You can get the info_hash like this: pack("H*", sha1($info)) where $info is the bencoded info key) First i decode a torrent to $torrent, then encode $torrent['info'], now the 'length' key should be an integer, but it's a string, however that's not a problem, can be fixed easily with settype(). A bigger problem is that the length of 'pieces' always is incorrect. Maybe you could do an info_hash function? Again, pack("H*", sha1($torrent['info'])) to get the info_hash Reproduce code: --------------- <?php require("decode.php"); require("encode.php"); $bdecode = new File_Bittorrent_Decode; $bencode = new File_Bittorrent_Encode; $torrent = $bdecode->decodeFile("file.torrent"); $info = $bencode->encode($torrent['info']); $infohash = pack("H*", sha1($info)); ?> Expected result: ---------------- 'length' in 'files' should be int, is string strlen of 'pieces' is incorrect

A little note: 'piece length' should be an int too.

I think the problem is that strlen doesn't work correct on the pieces stuff, I've made a working but pretty nasty function for getting the info_hash, I'm not sure if it works all the time, it depends on the number of e's at the end of the torrent. <?php $filesrc = @file_get_contents("file.torrent"); $start = @strpos($filesrc, 'd5:files'); $match = @substr($filesrc, $start, (@strlen($filesrc)-$start-1)); $file_info['info_hash'] = @urlencode(@pack("H*", sha1($match))); ?> It generates the hash for the text between d5:files and the second last e in the torrent. 4:info -> d5:files ... e <- e Try doing a strlen on the info key and you'll see that it probably returns a different value than what's in the torrent. Hope you manage to get this working, i'll try myself to do a 100% working solution. Sorry for my bad english :-)

Maybe I should add some stuff, don't query a tracker with a info_hash in the query string through your browser if that's what you've been trying, won't work for me. Build a torrent, BitComet works fine, and set the announce url to whatever.php. Add file_put_contents(print_r($_GET, true)); (or something like that) to whatever.php. (Will get bad data from tracker, don't mind that) Check if you can get the same info_hash with your script as your client sends to the announce url.