public void Send(IPEndPoint endPoint, byte[] buffer, int offset, int length, bool reliable)
{
var seqState = GetSeqStateOnSend(endPoint);
if (seqState.DisconnectRequestSent)
{
return;
}
// Don't send until connected
if (seqState.SessionId == PacketHeader.EmptySessionId)
{
return;
}
// Reliable packets should wait for ack before going to pool
var putBufferToPool = !reliable;
if (length > MaxPayload - seqState.AckLoad)
{
ushort fragId = seqState.NextFragId();
// Cut packet
var fragmentCount = (length + seqState.FullAckLoad + MaxPayload - 1) / MaxPayload;
var tailSize = length;
var fragmentOffset = 0;
for (int i = 0; i < fragmentCount; ++i)
{
var fragmentSize = Math.Min(MaxPayload - seqState.AckLoad, tailSize);
tailSize -= fragmentSize;
var fullBuffer = WrapFragment(seqState, buffer, fragmentOffset, fragmentSize, fragId, (ushort)i, (ushort)fragmentCount, reliable);
// It should be done after using fragmentOffset to cut fragment
fragmentOffset += fragmentSize;
try
{
SubSock.Send(endPoint, fullBuffer.Array, fullBuffer.Offset, fullBuffer.Count, putBufferToPool);
}
catch (SocketException)
{
Close(endPoint, seqState);
break;
}
}
}
else
{
var fullBuffer = Wrap(seqState, buffer, offset, length, reliable);
try
{
SubSock.Send(endPoint, fullBuffer.Array, fullBuffer.Offset, fullBuffer.Count, putBufferToPool);
}
catch (SocketException)
{
Close(endPoint, seqState);
}
}
}
public void Tick(IPEndPoint endPoint, SockBase sock, int now, int ackTimeout, int fragmentTimeout)
{
var notAckedCount = _notAcked.Count;
for (int i = 0; i < notAckedCount; ++i)
{
var packet = _notAcked[i];
if (now - packet.SendTicks > ackTimeout)
{
sock.Send(endPoint, packet.Buffer, packet.Offset, packet.Length, false);
packet.SendTicks = now;
_notAcked[i] = packet;
}
}
var packetsCount = _frags.Count;
for (int i = packetsCount - 1; i >= 0; --i)
{
var frag = _frags[i];
if (SmartSock.TimeDelta(frag.LastActive, now) > fragmentTimeout)
{
_frags.RemoveAt(i);
_fragPacketsPool.Put(frag);
}
}
while (_ackQueue.Count > 0)
{
var header = _headersPool.Get();
AddAcks(header);
header.SetSessionId(SessionId);
header.Length = (ushort)header.HeaderLength;
var buffer = _buffersPool.Get(header.Length);
header.WriteTo(buffer, 0);
sock.Send(endPoint, buffer, 0, header.Length, true);
_headersPool.Put(header);
}
}
