this.delegate = null
      delegate.onClosed(webSocket, code, reason)
    } else {
      events.add(Closed(code, reason))
    }
  }

  override fun onFailure(
    webSocket: WebSocket,
    t: Throwable,
    response: Response?,
  ) {
    Platform.get().log("[WS $name] onFailure", Platform.INFO, t)
    val delegate = delegate
    if (delegate != null) {
      this.delegate = null

                  // which case we should skip right down to shutdown.
                  if (isRunning()) {
                    try {
                      AbstractExecutionThreadService.this.run();
                    } catch (Throwable t) {
                      restoreInterruptIfIsInterruptedException(t);
                      try {
                        shutDown();
                      } catch (Exception ignored) {

     *
     * @param message the detail message
     * @param cause the cause of this exception
     */
    public RuntimeCIFSException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a runtime CIFS exception with the specified detail message.
     *
     * @param message the detail message
     */

     * @param cause The cause.
     */
    public SuggestIndexException(final Throwable cause) {
        super(cause);
    }

    /**
     * Constructs a new SuggestIndexException with the specified detail message and cause.
     * @param msg The detail message.
     * @param cause The cause.
     */
    public SuggestIndexException(final String msg, final Throwable cause) {
        super(msg, cause);
    }

     *
     * @param message The detail message explaining the exception
     * @param cause The cause of this exception
     */
    public SearchQueryException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new SearchQueryException with the specified detail message.
     *
     * @param message The detail message explaining the exception

     * @param args
     *            the message arguments
     * @param cause
     *            the cause
     */
    public FileAccessException(final String messageCode, final Object[] args, final Throwable cause) {
        super(messageCode, args, cause);
    }

    /**
     * Creates a new {@link FileAccessException} with the specified message code and arguments.
     *
     * @param messageCode

     *
     * @param message the detail message
     * @param cause the cause of this exception
     */
    public CIFSUnsupportedCryptoException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a CIFS unsupported crypto exception with the specified detail message.
     *
     * @param message the detail message
     */

     *
     * @param message the detail message
     * @param cause the cause of the exception
     */
    public SMBProtocolDowngradeException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Creates a new SMBProtocolDowngradeException with the specified detail message.
     *
     * @param message the detail message
     */

     *              (A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
     */
    public CrawlerSystemException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new CrawlerSystemException with the specified detail message.
     *

    get().log("[ES] onClosed", Platform.INFO, null)
    events.add(Closed)
    drainCancelQueue(eventSource)
  }

  override fun onFailure(
    eventSource: EventSource,
    t: Throwable?,
    response: Response?,
  ) {
    get().log("[ES] onFailure", Platform.INFO, t)
    events.add(Failure(t, response, t?.message ?: response?.body?.string()))
    drainCancelQueue(eventSource)
  }