public override void CancelRequest(PeerId peer, int piece, int startOffset, int length)
{
CancelWhere(b => b.StartOffset == startOffset &&
b.RequestLength == length &&
b.PieceIndex == piece &&
peer.Equals(b.RequestedOff));
}
public override RequestMessage ContinueExistingRequest(PeerId id)
{
foreach (var piece in Requests)
{
// For each piece that was assigned to this peer, try to request a block from it
// A piece is 'assigned' to a peer if he is the first person to request a block from that piece
if (piece.AllBlocksRequested || !id.Equals(piece.Blocks[0].RequestedOff))
{
continue;
}
for (int i = 0; i < piece.BlockCount; i++)
{
if (piece.Blocks[i].Requested || piece.Blocks[i].Received)
{
continue;
}
piece.Blocks[i].Requested = true;
return(piece.Blocks[i].CreateRequest(id));
}
}
// If we get here it means all the blocks in the pieces being downloaded by the peer are already requested
return(null);
}
public override void CancelRequest(PeerId peer, int piece, int startOffset, int length)
{
CancelWhere(delegate(Request r) {
return(r.Block.PieceIndex == piece &&
r.Block.StartOffset == startOffset &&
r.Block.RequestLength == length &&
peer.Equals(r.Peer));
}, false);
}
public override bool ValidatePiece(PeerId id, int pieceIndex, int startOffset, int length, out Piece piece)
{
//Comparer.index = pieceIndex;
var pIndex = Requests.BinarySearch(null, new BinaryIndexComparer(pieceIndex));
if (pIndex < 0)
{
piece = null;
Logger.Log(null, "Validating: {0} - {1}: ", pieceIndex, startOffset);
Logger.Log(null, "No piece");
return(false);
}
piece = Requests[pIndex];
// Pick out the block that this piece message belongs to
int blockIndex = Block.IndexOf(piece.Blocks, startOffset, length);
if (blockIndex == -1 || !id.Equals(piece.Blocks[blockIndex].RequestedOff))
{
Logger.Log(null, "Validating: {0} - {1}: ", pieceIndex, startOffset);
Logger.Log(null, "no block");
return(false);
}
if (piece.Blocks[blockIndex].Received)
{
Logger.Log(null, "Validating: {0} - {1}: ", pieceIndex, startOffset);
Logger.Log(null, "received");
return(false);
}
if (!piece.Blocks[blockIndex].Requested)
{
Logger.Log(null, "Validating: {0} - {1}: ", pieceIndex, startOffset);
Logger.Log(null, "not requested");
return(false);
}
id.AmRequestingPiecesCount--;
piece.Blocks[blockIndex].Received = true;
if (piece.AllBlocksReceived)
{
Requests.RemoveAt(pIndex);
}
return(true);
}
public override void CancelRequests(PeerId peer)
{
CancelWhere(b => peer.Equals(b.RequestedOff));
}