private void HandleTcpClientAccepted(IAsyncResult ar)
{
if (IsRunning)
{
TcpListener tcpListener = (TcpListener)ar.AsyncState;
System.Net.Sockets.TcpClient tcpClient = tcpListener.EndAcceptTcpClient(ar);
byte[] buffer = new byte[tcpClient.ReceiveBufferSize];
TcpClientState internalClient
= new TcpClientState(tcpClient, buffer);
lock (this.clients)
{
this.clients.Add(internalClient);
RaiseClientConnected(tcpClient);
}
NetworkStream networkStream = internalClient.NetworkStream;
networkStream.BeginRead(
internalClient.Buffer,
0,
internalClient.Buffer.Length,
HandleDatagramReceived,
internalClient);
tcpListener.BeginAcceptTcpClient(new AsyncCallback(HandleTcpClientAccepted), ar.AsyncState);
}
}
private void HandleDatagramReceived(IAsyncResult ar)
{
if (IsRunning)
{
TcpClientState internalClient = (TcpClientState)ar.AsyncState;
NetworkStream networkStream = internalClient.NetworkStream;
int numberOfReadBytes = 0;
try
{
numberOfReadBytes = networkStream.EndRead(ar);
}
catch
{
numberOfReadBytes = 0;
}
if (numberOfReadBytes == 0)
{
// connection has been closed
lock (this.clients)
{
this.clients.Remove(internalClient);
RaiseClientDisconnected(internalClient.TcpClient);
return;
}
}
// received byte and trigger event notification
byte[] receivedBytes = new byte[numberOfReadBytes];
Buffer.BlockCopy(
internalClient.Buffer, 0,
receivedBytes, 0, numberOfReadBytes);
RaiseDatagramReceived(internalClient.TcpClient, receivedBytes);
RaisePlaintextReceived(internalClient.TcpClient, receivedBytes);
// continue listening for tcp datagram packets
networkStream.BeginRead(
internalClient.Buffer,
0,
internalClient.Buffer.Length,
HandleDatagramReceived,
internalClient);
}
}