private void RemoveClient(string clientName)
{
try
{
VaiTcpIpClient clientToRemove = null;
foreach (var client in clients)
{
if (string.Compare(client.RemoteSocketName, clientName, StringComparison.Ordinal) == 0)
{
clientToRemove = client;
break;
}
}
if (clientToRemove == null)
{
return;
}
Debug.WriteLine(DateTimeEx.NowToStringWithMs + "\tRemoving client " + clientName);
WriteToLog("Removing client:" + clientName);
lock (clientLock)
{
clients.Remove(clientToRemove);
Task.Delay(10).Wait();
clientToRemove.Dispose();
}
Debug.WriteLine(DateTimeEx.NowToStringWithMs + "\tClient removed: " + clientName);
WriteToLog(clients.Count + " Client removed:" + clientName);
}
catch (Exception ex)
{
Debug.Assert(true, ex.Message);
ExceptionHandler.HandleException(ex, "RemoveClient");
}
}
private async void AcceptClientsAsync()
{
TcpClient tcpClient = null;
VaiListener listener = null;
try
{
while (KeepServerRunning && !cancellation.IsCancellationRequested)
{
// If you don't check for pending messages,
// and there have been at least one active connection,
// AcceptTcpClientAsync will throw a "cannot used disposed object exception"
// when tcpServer stops.
if (!socketServer.Pending())
{
Thread.Sleep(0);
continue;
}
//Accept the pending client connection and return a TcpClient object initialized for communication.
tcpClient = await socketServer.AcceptTcpClientAsync().WithWaitCancellation(cancellation.Token);
var tcpIpClient = new VaiTcpIpClient(tcpClient);
clients.Add(tcpIpClient);
if (enableClientListening)
{
var portDataParser = new PortDataParser(tcpIpClient);
listener = new VaiListener(tcpIpClient, portDataParser);
Debug.WriteLine("Adding listener " + tcpIpClient.RemoteSocketName);
listeners.Add(listener);
var t1 = new Task(() => listener.StartListening());
t1.Start();
}
}
}
// this exception may occur if there have been open connections
catch (ObjectDisposedException ex)
{
Debug.WriteLine("Exception in CheckForClient." + ex.Message);
Debug.Assert(true, ex.Message);
}
// this exception may occur if there have been open connections
catch (OperationCanceledException ex)
{
Debug.Assert(true, ex.Message);
Debug.WriteLine("Exception in CheckForClient." + ex.Message);
}
catch (Exception ex)
{
Debug.WriteLine("Exception in CheckForClient." + ex.Message);
Debug.Assert(false, ex.Message);
}
finally
{
listener?.Dispose();
if (!KeepServerRunning)
{
Debug.WriteLine("CheckForClient finally. keepServerRunning:" + KeepServerRunning);
}
}
}
