public void WaitForData(Socket socket, int clientNumber)
{
try
{
if (_workerReceiveCallBack == null)
{
_workerReceiveCallBack = new AsyncCallback(OnDataReceived);
}
var socketPacket = new SocketPacket(socket, clientNumber);
socket.BeginReceive(socketPacket.Buffer,
0,
socketPacket.Buffer.Length,
SocketFlags.None,
_workerReceiveCallBack,
socketPacket);
}
catch (ObjectDisposedException)
{
//System.Diagnostics.Trace.WriteLine("#" + clientNumber.ToString() + " - WaitForData: Socket has been closed");
return;
}
catch (SocketException se)
{
if (se.SocketErrorCode == SocketError.ConnectionReset) // connection reset by peer
{
// remove worker socket of closed client
DisconnectClient(clientNumber);
}
else if (se.SocketErrorCode == SocketError.ConnectionAborted) // connection aborted
{
// remove worker socket of closed client
DisconnectClient(clientNumber);
}
else
{
Traces.NntpServerTraceEvent(System.Diagnostics.TraceEventType.Critical, "[Client {0}] Server.WaitForData failed: {1}", clientNumber, Traces.ExceptionToString(se));
}
return;
}
catch (Exception ex)
{
Traces.NntpServerTraceEvent(System.Diagnostics.TraceEventType.Critical, "[Client {0}] Server.WaitForData failed: {1}", clientNumber, Traces.ExceptionToString(ex));
}
}
protected void SendData(string data, int clientNumber)
{
byte[] buffer;
try
{
buffer = _encodingSend.GetBytes(data);
}
catch (Exception ex)
{
Traces.NntpServerTraceEvent(System.Diagnostics.TraceEventType.Critical, "[Client {0}] Server.SendData failed to encode data: {1}\r\n{2}", clientNumber, data, Traces.ExceptionToString(ex));
return;
}
Socket workerSocket;
try
{
lock (_workerSockets)
{
workerSocket = _workerSockets[clientNumber];
}
}
catch
{
// continue
//System.Diagnostics.Trace.WriteLine("Server::SendData - unable to access entry [" + clientNumber + "]");
return;
}
if (workerSocket == null)
{
Traces.NntpServerTraceEvent(System.Diagnostics.TraceEventType.Warning, "[Client {0}] Server.SendData failed (client removed from the worker list)", clientNumber);
return;
}
try
{
if (_workerSendCallBack == null)
{
_workerSendCallBack = new AsyncCallback(OnDataSend);
}
var socketPacket = new SocketPacket(workerSocket, clientNumber);
workerSocket.BeginSend(buffer,
0,
buffer.Length,
SocketFlags.None,
_workerSendCallBack,
socketPacket);
}
catch (ObjectDisposedException)
{
//System.Diagnostics.Trace.WriteLine("#" + clientNumber.ToString() + " - OnDataSend: Socket has been closed");
return;
}
catch (SocketException se)
{
if (se.SocketErrorCode == SocketError.ConnectionReset) // connection reset by peer
{
// remove worker socket of closed client
DisconnectClient(clientNumber);
}
else if (se.SocketErrorCode == SocketError.ConnectionAborted) // connection aborted
{
// remove worker socket of closed client
DisconnectClient(clientNumber);
}
else
{
Traces.NntpServerTraceEvent(System.Diagnostics.TraceEventType.Critical, "[Client {0}] Server.SendData failed: {1}", clientNumber, Traces.ExceptionToString(se));
}
return;
}
catch (Exception ex)
{
Traces.NntpServerTraceEvent(System.Diagnostics.TraceEventType.Critical, "[Client {0}] Server.SendData failed: {1}", clientNumber, Traces.ExceptionToString(ex));
}
}