It has lists of lengths, number of pieces, hashes for each piece. If it end up with a bad piece it can go out again and retrieve that piece over.
[1] http://en.wikipedia.org/wiki/Torrent_file -Mark On Wed, Sep 4, 2013 at 7:40 PM, Frédéric THOMAS <webdoubl...@hotmail.com>wrote: > I guess they don't, at the end you could have a corrupt file IMO >
