public bool SendNextPacket()
{
NetPacket packet;
lock (_outgoingPackets)
{
if (_outgoingPackets.Count == 0)
{
return(false);
}
packet = _outgoingPackets.Dequeue();
}
_peer.SendRawData(packet);
_peer.Recycle(packet);
return(true);
}
//ProcessAck in packet
public void ProcessAck(NetPacket packet)
{
int validPacketSize = (_windowSize - 1) / BitsInByte + 1 + NetConstants.SequencedHeaderSize;
if (packet.Size != validPacketSize)
{
NetUtils.DebugWrite("[PA]Invalid acks packet size");
return;
}
ushort ackWindowStart = packet.Sequence;
if (ackWindowStart > NetConstants.MaxSequence)
{
NetUtils.DebugWrite("[PA]Bad window start");
return;
}
//check relevance
if (NetUtils.RelativeSequenceNumber(ackWindowStart, _localWindowStart) <= -_windowSize)
{
NetUtils.DebugWrite("[PA]Old acks");
return;
}
byte[] acksData = packet.RawData;
NetUtils.DebugWrite("[PA]AcksStart: {0}", ackWindowStart);
int startByte = NetConstants.SequencedHeaderSize;
Monitor.Enter(_pendingPackets);
for (int i = 0; i < _windowSize; i++)
{
int ackSequence = (ackWindowStart + i) % NetConstants.MaxSequence;
if (NetUtils.RelativeSequenceNumber(ackSequence, _localWindowStart) < 0)
{
//NetUtils.DebugWrite(ConsoleColor.Cyan, "[PA] SKIP OLD: " + ackSequence);
//Skip old ack
continue;
}
int currentByte = startByte + i / BitsInByte;
int currentBit = i % BitsInByte;
if ((acksData[currentByte] & (1 << currentBit)) == 0)
{
//NetUtils.DebugWrite(ConsoleColor.Cyan, "[PA] SKIP FALSE: " + ackSequence);
//Skip false ack
continue;
}
if (ackSequence == _localWindowStart)
{
//Move window
_localWindowStart = (_localWindowStart + 1) % NetConstants.MaxSequence;
}
NetPacket removed = _pendingPackets[ackSequence % _windowSize].GetAndClear();
if (removed != null)
{
_peer.Recycle(removed);
NetUtils.DebugWrite("[PA]Removing reliableInOrder ack: {0} - true", ackSequence);
}
else
{
NetUtils.DebugWrite("[PA]Removing reliableInOrder ack: {0} - false", ackSequence);
}
}
Monitor.Exit(_pendingPackets);
}
