This function was implemented by the “Align File to Piece Boundary” function. To resolve this problem, we have made every piece only contain content from the same file. As a result, although all the content in file A is downloaded, the status of the torrent task might keep permanent “99.9% finished” because some content from file B in this piece has not been downloaded. If there is more than one file in the torrent, there might be some pieces containing the end of file A and at the same time the beginning of file B. At the creation time of a torrent, all the files in the torrent are virtually concatenated and then the resulting data chunk is split into evenly sized pieces, of a size appointed by the torrent making application and indicated in the torrent file. The clients do not transfer files by files but by pieces which have the same size.
BitTorrent clients exchange these files according to this information.
torrent file is a file that contains basic information in a well defined format, about a file or set of files. Why do we need to Align File to Piece Boundary?Ī.
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