opts.Trace(fmt.Sprint("listenCfg.Listen: ", e.Error()))
			}

			listenErrs[i] = e
			continue
		}

		tcpListener, ok := l.(*net.TCPListener)
		if !ok {
			listenErrs[i] = fmt.Errorf("unexpected listener type found %v, expected net.TCPListener", l)
			if opts.Trace != nil {
				opts.Trace(fmt.Sprint("net.TCPListener: ", listenErrs[i].Error()))
			}
			continue
		}
		if opts.Trace != nil {

		listener, listenErrs := newHTTPListener(context.Background(),
			testCase.serverAddrs,
			TCPOptions{},
		)
		for i, expectedListenErr := range testCase.expectedListenErrs {
			if !expectedListenErr {
				if listenErrs[i] != nil {
					t.Fatalf("Test %d:, listenErrs[%d] error: expected = <nil>, got = %v", testIdx+1, i, listenErrs[i])
				}
			} else if listenErrs[i] == nil {

	// Create new HTTP listener.
	var listener *httpListener
	listener, listenErrs := newHTTPListener(
		listenCtx,
		srv.Addrs,
		srv.TCPOptions,
	)

	var interfaceFound bool
	for i := range listenErrs {
		if listenErrs[i] != nil {
			listenErrCallback(srv.Addrs[i], listenErrs[i])
		} else {
			interfaceFound = true
		}
	}
	if !interfaceFound {

    if (!monitor.isOccupiedByCurrentThread()) {
      listeners.dispatch();
    }
  }

  private void enqueueStartingEvent() {
    listeners.enqueue(STARTING_EVENT);
  }

  private void enqueueRunningEvent() {
    listeners.enqueue(RUNNING_EVENT);
  }

  private void enqueueStoppingEvent(final State from) {
    if (from == State.STARTING) {
      listeners.enqueue(STOPPING_FROM_STARTING_EVENT);

        return updateScope;
    }

    private void fireEvent(int event, List<ResolutionListener> listeners, ResolutionNode node) {
        fireEvent(event, listeners, node, null);
    }

    private void fireEvent(int event, List<ResolutionListener> listeners, ResolutionNode node, Artifact replacement) {
        fireEvent(event, listeners, node, replacement, null);
    }

    private void fireEvent(
            int event,

        for (ProjectExecutionListener listener : listeners) {
            listener.afterProjectExecutionFailure(event);
        }
    }

    public void addProjectExecutionListener(ProjectExecutionListener listener) {
        this.listeners.add(listener);
    }

    public void removeProjectExecutionListener(ProjectExecutionListener listener) {
        this.listeners.remove(listener);
    }

                // won't happen
            }
        }

        if (listeners == null) {
            listeners = new ArrayList<>();

            if (logger.isDebugEnabled()) {
                listeners.add(new DebugResolutionListener(logger));
            }

            listeners.add(new WarningResolutionListener(logger));
        }

    private final Collection<ProjectExecutionListener> listeners;

    CompoundProjectExecutionListener(Collection<ProjectExecutionListener> listeners) {
        this.listeners = listeners; // NB this is live injected collection
    }

    @Override
    public void beforeProjectExecution(ProjectExecutionEvent event) throws LifecycleExecutionException {
        for (ProjectExecutionListener listener : listeners) {

	w, listeners, err := c.setupListenerConfigWriter()
	if err != nil {
		return err
	}
	// Sort by port, addr, type
	sort.Slice(listeners, func(i, j int) bool {
		if listeners[i].GetInternalListener() != nil && listeners[j].GetInternalListener() != nil {
			return listeners[i].GetName() < listeners[j].GetName()
		}
		iPort := retrieveListenerPort(listeners[i])

   * more futures or adding more {@code directExecutor()} listeners inline -- consider {@link
   * MoreExecutors#directExecutor}. Otherwise, avoid it: See the warnings on the docs for {@code
   * directExecutor}.
   *
   * <p>This is the most general listener interface. For common operations performed using
   * listeners, see {@link Futures}. For a simplified but general listener interface, see {@link