}

  internal fun processResponse(response: Response) {
    response.use {
      if (!response.isSuccessful) {
        listener.onFailure(this, null, response)
        return
      }

      val body = response.body

      if (!body.isEventStream()) {
        listener.onFailure(
          this,
          IllegalStateException("Invalid content-type: ${body.contentType()}"),
          response,
        )

          @Override
          public void onSuccess(String result) {
            fail("Was not expecting onSuccess() to be called.");
          }

          @Override
          public void onFailure(Throwable t) {
            synchronized (monitor) {
              assertFalse(called);
              assertThat(t).isInstanceOf(CancellationException.class);
              called = true;
            }
          }

            } catch (Exception ex) {
                log.warn("Listener threw exception", ex);
            }
        }
    }

    private void onFailure(Exception e) {
        onFailure(e, 0);
    }

    private void onFailure(Exception e, long responseTimeMs) {
        State currentState = state.get();
        lastFailureTime.set(System.currentTimeMillis());
        totalFailures.incrementAndGet();

          webSocket: WebSocket,
          code: Int,
          reason: String,
        ) {
          webSocket.close(1000, null)
          latch.countDown()
        }

        override fun onFailure(
          webSocket: WebSocket,
          t: Throwable,
          response: Response?,
        ) {
          t.printStackTrace(System.out)
          latch.countDown()
        }
      },
    )

          @Override
          public void onSuccess(String result) {
            fail("Was not expecting onSuccess() to be called.");
          }

          @Override
          public void onFailure(Throwable t) {
            synchronized (monitor) {
              assertFalse(called);
              assertThat(t).isInstanceOf(CancellationException.class);
              called = true;
            }
          }

      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
      delegate.onFailure(webSocket, t, response)
    } else {
      events.add(Failure(t, response))
    }

    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)
  }

    val exceptionRef = AtomicReference<Throwable>()
    val call = client.newCall(request)
    call.timeout().timeout(250, TimeUnit.MILLISECONDS)
    call.enqueue(
      object : Callback {
        override fun onFailure(
          call: Call,
          e: IOException,
        ) {
          exceptionRef.set(e)
          latch.countDown()
        }

        @Throws(IOException::class)
        override fun onResponse(

  /**
   * Invoked when an event source has been closed due to an error reading from or writing to the
   * network. Incoming events may have been lost. No further calls to this listener will be made.
   */
  open fun onFailure(
    eventSource: EventSource,
    t: Throwable?,
    response: Response?,
  ) {
  }

                    @Override
                    public void onSuccess(V value) {
                      resolve.onInvoke(value);
                    }

                    @Override
                    public void onFailure(Throwable throwable) {
                      reject.onInvoke(throwable.getBackingJsObject());
                    }
                  },
                  MoreExecutors.directExecutor());
            })