private void EndSend(IAsyncResult ar)
{
try
{
if (!(this.udpClient is null))
{
UdpDatagramEventArgs e = (UdpDatagramEventArgs)ar.AsyncState;
this.udpClient.EndSend(ar);
lock (this.writeQueue)
{
if (!(this.writeQueue.First is null))
{
KeyValuePair <IPEndPoint, byte[]> Rec = this.writeQueue.First.Value;
this.writeQueue.RemoveFirst();
this.udpClient.BeginSend(Rec.Value, Rec.Value.Length, Rec.Key, this.EndSend, new UdpDatagramEventArgs(Rec.Key, Rec.Value));
}
else
{
this.isWriting = false;
}
}
internal void UdpDatagramReceived(PeerToPeerNetwork Sender, UdpDatagramEventArgs e)
{
LinkedList<KeyValuePair<ushort, byte[]>> LostPackets = null;
byte[] FirstPacket = null;
ushort FirstPacketNr = 0;
ushort PacketNr;
byte[] Packet;
byte[] Data = e.Data;
int Len = Data.Length;
int Pos = 0;
int PacketLen;
int Offset;
byte b;
lock (this.udpReceiveLock)
{
while (Pos < Len)
{
b = Data[Pos++];
PacketLen = (b & 127);
Offset = 7;
while (Pos < Len && (b & 128) != 0)
{
b = Data[Pos++];
PacketLen |= (b & 127) << Offset;
Offset += 7;
}
if (Pos + 2 > Len)
break;
PacketNr = Data[Pos++];
PacketNr |= (ushort)(Data[Pos++] << 8);
if (Pos + PacketLen > Len)
break;
Packet = new byte[PacketLen];
Array.Copy(Data, Pos, Packet, 0, PacketLen);
Pos += PacketLen;
if ((short)(PacketNr - this.lastReceivedPacket) > 0)
{
if (FirstPacket == null)
{
FirstPacket = Packet;
FirstPacketNr = PacketNr;
}
else
{
if (LostPackets == null)
LostPackets = new LinkedList<KeyValuePair<ushort, byte[]>>();
LostPackets.AddFirst(new KeyValuePair<ushort, byte[]>(PacketNr, Packet)); // Reverse order
}
}
}
if (FirstPacket != null)
this.lastReceivedPacket = FirstPacketNr;
}
BinaryEventHandler h = this.OnReceived;
if (h != null)
{
if (LostPackets != null)
{
foreach (KeyValuePair<ushort, byte[]> P in LostPackets)
{
try
{
h(this, P.Value);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace.ToString());
}
}
}
if (FirstPacket != null)
{
try
{
h(this, FirstPacket);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace.ToString());
}
}
}
}
private void p2pNetwork_OnUdpDatagramReceived(PeerToPeerNetwork Sender, UdpDatagramEventArgs e)
{
Player Player;
lock (this.remotePlayersByEndpoint)
{
if (!this.remotePlayersByEndpoint.TryGetValue(e.RemoteEndpoint, out Player))
return;
}
if (Player.Connection != null)
Player.Connection.UdpDatagramReceived(Sender, e);
}