public void StartListening()
{
try
{
ClientService ClientTask;
// Client Connections Pool
ClientConnectionPool ConnectionPool = new ClientConnectionPool();
// Client Task to handle client requests
ClientTask = new ClientService(ConnectionPool);
ClientTask.Start();
IPAddress serverAddr = IPAddress.Parse(Program.SERVER_ADDRESS);
int serverPort = Program.SERVER_PORT;
Socket mySocketServerUdp = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint localIpEndPoint = new IPEndPoint(serverAddr, serverPort);
try
{
mySocketServerUdp.Bind(localIpEndPoint);
int ClientNbr = 0;
// Start listening for connections.
while (Program.ServerForm.DoExit == false)
{
Byte[] received = null;
EndPoint remoteEP = (localIpEndPoint);
int bytesReceived = 0;
try
{
if (mySocketServerUdp.Available > 0)
{
int nbToRead = Math.Max(Program.BUFFER_SIZE, mySocketServerUdp.Available);
received = new Byte[nbToRead];
bytesReceived = mySocketServerUdp.ReceiveFrom(received, ref remoteEP);
}
else
{
Thread.Sleep(10);
continue;
}
}
catch (Exception exx)
{
// Case device has been power off :(
log.Error("UdpServer.cs exception");
continue;
}
// did we received something ?
if (bytesReceived > 0)
{
StringBuilder dataReceived = new StringBuilder();
dataReceived.Append(System.Text.Encoding.ASCII.GetString(received));
// An incoming message needs to be processed.
ConnectionPool.Enqueue(new UDPClientHandler(remoteEP, ClientNbr, dataReceived.ToString()));
// Send ACK to the client
//byte[] cmdBytes = new byte[] { };
//cmdBytes = Encoding.ASCII.GetBytes(requiredCommand);
//var sendSackResult = mySocketServerUdp.SendTo(cmdBytes, cmdBytes.Length, SocketFlags.None, remoteEP);
}
else
{
// Program.ServerForm.updateNbConnection(ConnectionPool.Count);
Thread.Sleep(100);
}
}
// Stop client requests handling
ClientTask.Stop();
log.Debug("Closing Listener...");
mySocketServerUdp.Shutdown(SocketShutdown.Both);
//mySocketServerUdp.Disconnect(false);
mySocketServerUdp.Close(2);
mySocketServerUdp = null;
}
catch (Exception e)
{
log.Error(e);
}
}
catch (Exception ex)
{
log.Error(ex);
}
}
