[Mono-dev] Bug in MonoTorrent

[Andreas Nahr]

Hi,

I tried the MonoTorrent library and found a bug preventing if from working with large torrents or files.
The torrent contained a file with > 3GB size (Linux DVD image):

System.IO.IOException was unhandled
  Message="An attempt was made to move the file pointer before the beginning of the file.\r\n"
  Source="mscorlib"
  StackTrace:
       at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
       at System.IO.FileStream.SeekCore(Int64 offset, SeekOrigin origin)
       at System.IO.FileStream.Seek(Int64 offset, SeekOrigin origin)
       at MonoTorrent.Client.FileManager.Read(Byte[] buffer, Int32 bufferOffset, Int64 offset, Int32 count)
       at MonoTorrent.Client.FileManager.GetHash(Int32 pieceIndex)
       at MonoTorrent.Client.TorrentManager.HashCheck(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback(Object state)


Also some functions like e.g. torrent.DownloadSpeed () seem to be pretty complicated to get right in terms of multithreading use.

Happy Hacking
Andreas
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