Task <SocketError> SendDatagramAsync(Datagram datagram)
{
datagram.ConnectionKey = this.EndPoint.ConnectionKey;
Statistics.PacketOut();
Statistics.BytesOut(datagram.GetTotalSize());
return(peer.SendDatagramAsync(this, datagram));
}
void OnMtuExpand(Datagram datagram)
{
if (!CheckStatus(datagram, UdpConnectionStatus.Connected))
{
return;
}
int size = datagram.GetTotalSize();
byte fix = 0;
if (size > peer.Configuration.LimitMtu)
{
size = peer.Configuration.LimitMtu;
fix = 1;
}
logger.Debug($"MTU Successfully expanded to {size} by request from other side");
var mtuDatagram = CreateSpecialDatagram(MessageType.ExpandMTUSuccess, 5);
using (WardenStreamWriter writer = new WardenStreamWriter(mtuDatagram.BaseStream, true))
{
writer.WriteVarInt(size);
writer.Write(fix);
}
if (size > this.Mtu)
{
this.Mtu = size;
}
_ = SendDatagramAsync(mtuDatagram);
datagram.Dispose();
}
internal void OnDatagram(Datagram datagram)
{
if (datagram.ConnectionKey != this.EndPoint.ConnectionKey)
{
logger.Warn($"Got wrong {datagram}: connection id mismatch");
datagram.Dispose();
return;
}
Statistics.PacketIn();
Statistics.BytesIn(datagram.GetTotalSize());
switch (datagram.Type)
{
case MessageType.ConnectReq:
OnConnectReq(datagram); break;
case MessageType.ConnectResp:
OnConnectResp(datagram); break;
case MessageType.DisconnectReq:
OnDisconnectReq(datagram); break;
case MessageType.DisconnectResp:
OnDisconnectResp(datagram); break;
case MessageType.Ping:
OnPing(datagram); break;
case MessageType.Pong:
OnPong(datagram); break;
case MessageType.ExpandMTURequest:
OnMtuExpand(datagram); break;
case MessageType.ExpandMTUSuccess:
OnMtuSuccess(datagram); break;
case MessageType.DeliveryAck:
OnAckReceived(datagram); break;
default:
OnDataReceived(datagram); break;
}
}