async void WritePieceAsync (PieceMessage message, Piece piece)
{
long offset = (long) message.PieceIndex * Manager.Torrent.PieceLength + message.StartOffset;
try {
await DiskManager.WriteAsync (Manager.Torrent, offset, message.Data, message.RequestLength);
if (Cancellation.IsCancellationRequested)
return;
} catch (Exception ex) {
Manager.TrySetError (Reason.WriteFailure, ex);
return;
} finally {
ClientEngine.BufferPool.Return (message.Data);
}
piece.TotalWritten++;
// If we haven't received all the pieces to disk, there's no point in hash checking
if (!piece.AllBlocksWritten)
return;
// Hashcheck the piece as we now have all the blocks.
byte[] hash;
try {
hash = await DiskManager.GetHashAsync (Manager.Torrent, piece.Index);
if (Cancellation.IsCancellationRequested)
return;
} catch (Exception ex) {
Manager.TrySetError (Reason.ReadFailure, ex);
return;
}
bool result = hash != null && Manager.Torrent.Pieces.IsValid (hash, piece.Index);
Manager.OnPieceHashed (piece.Index, result, 1, 1);
Manager.PieceManager.PendingHashCheckPieces[piece.Index] = false;
if (!result)
Manager.HashFails++;
for (int i = 0; i < piece.Blocks.Length; i++)
if (piece.Blocks[i].RequestedOff != null)
peers.Add ((PeerId) piece.Blocks[i].RequestedOff);
foreach (PeerId peer in peers) {
peer.Peer.HashedPiece (result);
if (peer.Peer.TotalHashFails == 5)
ConnectionManager.CleanupSocket (Manager, peer);
}
peers.Clear ();
// If the piece was successfully hashed, enqueue a new "have" message to be sent out
if (result)
Manager.finishedPieces.Enqueue (new HaveMessage (piece.Index));
}