* Sets the number of request credits.
     *
     * @param credits the number of credits to set
     */
    void setRequestCredits(int credits);

    /**
     * Checks if this is a cancel request.
     *
     * @return whether this is a cancel request
     */
    boolean isCancel();

    /**
     * Gets the next request in the chain.
     *
     * @return chained request
     */
    Request getNext();

    /**

    val server = serverListener.assertOpen()

    // Initiate a close on the client, which will schedule a hard cancel in 500 ms.
    val closeAtNanos = System.nanoTime()
    webSocket.close(1000, "goodbye", 500L)
    serverListener.assertClosing(1000, "goodbye")

    // Confirm that the hard cancel occurred after 500 ms.
    clientListener.assertFailure()
    val elapsedUntilFailure = System.nanoTime() - closeAtNanos

  }

  @Override
  public abstract @Nullable Range<C> rangeContaining(C value);

  @Override
  public boolean isEmpty() {
    return asRanges().isEmpty();
  }

  @Override
  public void add(Range<C> range) {
    throw new UnsupportedOperationException();
  }

  @Override
  public void remove(Range<C> range) {
    throw new UnsupportedOperationException();
  }

  @Override

  }

  public void testListenerCalledOnCancelFromRunning() throws Exception {
    exec.execute(task);
    runLatch.await();

    // Task has started up, cancel it while it's running.
    task.cancel(true);
    assertTrue(task.isDone());
    assertTrue(task.isCancelled());
    assertEquals(1, taskLatch.getCount());

    // Wait for the listeners to be called.

 */
package okhttp3

import okio.IOException

/**
 * Returns the trailers that follow an HTTP response, blocking if they aren't ready yet.
 * Implementations of this interface should respond to [Call.cancel] by immediately throwing an
 * [IOException].
 *
 * Most callers won't need this interface, and should use [Response.trailers] instead.
 *

 *       next task will wait for any running callable (or pending {@code Future} returned by an
 *       {@code AsyncCallable}) to complete, without interrupting it (and without calling {@code
 *       cancel} on the {@code Future}). So beware: <i>Even if you cancel every preceding {@code
 *       Future} returned by this class, the next task may still have to wait.</i>.
 *   <li>Once an {@code AsyncCallable} returns a {@code Future}, this class considers that task to

        assertNotNull(TimeoutManager.getInstance().thread);
        Thread.sleep(2000);
        assertEquals(count, expiredCount);
        assertEquals(1, TimeoutManager.getInstance().getTimeoutTaskCount());
        task.cancel();
        Thread.sleep(2000);
        assertEquals(0, TimeoutManager.getInstance().getTimeoutTaskCount());
        assertNull(TimeoutManager.getInstance().thread);
    }

        .build();

    final long startNanos = System.nanoTime();
    final Call call = client.newCall(request);

    // Schedule a job to cancel the call in 1 second.
    executor.schedule(() -> {
      System.out.printf("%.2f Canceling call.%n", (System.nanoTime() - startNanos) / 1e9f);
      call.cancel();
      System.out.printf("%.2f Canceled call.%n", (System.nanoTime() - startNanos) / 1e9f);
    }, 1, TimeUnit.SECONDS);

        transaction.setMid(12345);

        // Create cancel request
        CommonServerMessageBlockRequest cancelRequest = transaction.createCancel();

        // Verify it returns an SmbComNtCancel instance
        assertNotNull(cancelRequest);
        assertTrue(cancelRequest instanceof SmbComNtCancel);

        // Verify the cancel request has the correct MID
        assertEquals(12345, cancelRequest.getMid());

                        accessTimeoutTarget.stop();
                        if (accessTimeoutTask != null && !accessTimeoutTask.isCanceled()) {
                            accessTimeoutTask.cancel();
                        }
                    }
                }
            }

            @Override
            protected ResponseData getResponseData(final String uri, final boolean includeContent) {