bool ParseHeader(UdpStream stream)
{
// we should always start at ptr 0
UdpAssert.Assert(stream.Ptr == 0);
UdpHeader header = new UdpHeader();
header.Unpack(stream, socket);
// after unpacking the header, the pointer should be at the header size
UdpAssert.Assert(stream.Ptr == UdpSocket.HeaderBitSize);
int seqDistance = UdpMath.SeqDistance(header.ObjSequence, recvSequence, UdpHeader.SEQ_PADD);
// we have to be within window size
if (seqDistance > socket.Config.PacketWindow || seqDistance < -socket.Config.PacketWindow)
{
ConnectionError(UdpConnectionError.SequenceOutOfBounds);
return(false);
}
// this is an old packet
if (seqDistance <= 0)
{
return(false);
}
// update receive history
if (seqDistance >= UdpSocket.AckRedundancy)
{
recvHistory = 1UL;
}
else
{
recvHistory = (recvHistory << seqDistance) | 1UL;
}
// update our receive stats
recvSequence = header.ObjSequence;
recvSinceLastSend += 1;
// ack sent objects
AckHandles(header, true);
return(true);
}
bool ParseHeader(ref UdpBitStream buffer)
{
UdpHeader header = new UdpHeader();
header.Unpack(new UdpBitStream(buffer.Data, buffer.Length, 0), socket);
// Assign bit size
if (socket.Config.WritePacketBitSize)
{
buffer.Length = header.BitSize;
}
int seqDistance = UdpMath.SeqDistance(header.ObjSequence, recvSequence, UdpHeader.SEQ_PADD);
// we have to be within window size
if (seqDistance > socket.Config.PacketWindow || seqDistance < -socket.Config.PacketWindow)
{
ConnectionError(UdpConnectionError.SequenceOutOfBounds);
return(false);
}
// this is an old packet
if (seqDistance <= 0)
{
return(false);
}
// update receive history
if (seqDistance >= socket.Config.AckRedundancy)
{
recvHistory = 1UL;
}
else
{
recvHistory = (recvHistory << seqDistance) | 1UL;
}
// update our receive stats
recvSequence = header.ObjSequence;
recvSinceLastSend += 1;
// ack sent objects
AckHandles(header, true);
return(true);
}
bool ParseHeader(ref UdpBitStream buffer)
{
UdpHeader header = new UdpHeader();
header.Unpack(new UdpBitStream(buffer.Data, buffer.Length, 0), socket);
// Assign bit size
if (socket.Config.WritePacketBitSize) {
buffer.Length = header.BitSize;
}
int seqDistance = UdpMath.SeqDistance(header.ObjSequence, recvSequence, UdpHeader.SEQ_PADD);
// we have to be within window size
if (seqDistance > socket.Config.PacketWindow || seqDistance < -socket.Config.PacketWindow) {
ConnectionError(UdpConnectionError.SequenceOutOfBounds);
return false;
}
// this is an old packet
if (seqDistance <= 0)
return false;
// update receive history
if (seqDistance >= socket.Config.AckRedundancy) {
recvHistory = 1UL;
} else {
recvHistory = (recvHistory << seqDistance) | 1UL;
}
// update our receive stats
recvSequence = header.ObjSequence;
recvSinceLastSend += 1;
// ack sent objects
AckHandles(header, true);
return true;
}
