/// <summary> /// Starts the listener. /// </summary> /// <remarks> /// </remarks> private void StartListener() { if (_cancellationTokenSource.Token.IsCancellationRequested) { return; } try { if (IsRunning) { Logger.Message("Starting New Listener {0}", listenerCount++); var serverPipe = new NamedPipeServerStream(PipeName, PipeDirection.InOut, Instances, PipeTransmissionMode.Message, PipeOptions.Asynchronous, BufferSize, BufferSize, _pipeSecurity); nonConnectedListeners.Add(serverPipe); var listenTask = Task.Factory.FromAsync(serverPipe.BeginWaitForConnection, serverPipe.EndWaitForConnection, serverPipe); listenTask.ContinueWith(t => { nonConnectedListeners.Remove(serverPipe); if (t.IsCanceled || _cancellationTokenSource.Token.IsCancellationRequested || Signals.ShutdownRequested || Signals.ShuttingDown) { return; } StartListener(); // spawn next one! if (serverPipe.IsConnected) { var serverInput = new byte[BufferSize]; serverPipe.ReadAsync(serverInput, 0, serverInput.Length).AutoManage().ContinueWith(antecedent => { var rawMessage = Encoding.UTF8.GetString(serverInput, 0, antecedent.Result); if (string.IsNullOrEmpty(rawMessage)) { return; } var requestMessage = new UrlEncodedMessage(rawMessage); // first command must be "startsession" if (!requestMessage.Command.Equals("StartSession", StringComparison.CurrentCultureIgnoreCase)) { return; } // verify that user is allowed to connect. try { var hasAccess = false; serverPipe.RunAsClient(() => { hasAccess = PermissionPolicy.Connect.HasPermission; }); if (!hasAccess) { return; } } catch { return; } // check for the required parameters. // close the session if they are not here. if (string.IsNullOrEmpty(requestMessage["id"]) || string.IsNullOrEmpty(requestMessage["client"])) { return; } var isSync = requestMessage["async"].IsFalse(); if (isSync) { StartResponsePipeAndProcessMessages(requestMessage["client"], requestMessage["id"], serverPipe); } else { Session.Start(requestMessage["client"], requestMessage["id"], serverPipe, serverPipe); } }).Wait(); } }, _cancellationTokenSource.Token, TaskContinuationOptions.AttachedToParent, TaskScheduler.Current); } } catch /* (Exception e) */ { RequestStop(); } }