private var client =
    clientTestRule
      .newClientBuilder()
      .writeTimeout(Duration.ofMillis(500))
      .readTimeout(Duration.ofMillis(500))
      .addInterceptor(
        Interceptor { chain: Interceptor.Chain ->
          val response = chain.proceed(chain.request())
          // Ensure application interceptors never see a null body.
          assertThat(response.body).isNotNull()
          response

## Version 3.14.1

_2019-04-10_

 *  Fix: Don't crash when an interceptor retries when there are no more routes. This was an
    edge-case regression introduced with the events cleanup in 3.14.0.

 *  Fix: Provide actionable advice when the exchange is non-null. Prior to 3.14, OkHttp would
    silently leak connections when an interceptor retries without closing the response body. With

  /**
   * Waits until the given future {@linkplain Future#isDone is done}, invoking the garbage collector
   * as necessary to try to ensure that this will happen.
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   */
  @SuppressWarnings("removal") // b/487687332
  public static void awaitDone(Future<?> future) {
    if (future.isDone()) {
      return;
    }
    long timeoutSeconds = timeoutSeconds();

    server.enqueue(MockResponse())
    val connection = AtomicReference<Connection?>()
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain? ->
            connection.set(chain!!.connection())
            chain.proceed(chain.request())
          },
        ).build()
    dns["san.com"] = Dns.SYSTEM.lookup(server.hostName).subList(0, 1)

      } else {
        AssertionFailedError afe = new AssertionFailedError(t.toString());
        afe.initCause(t);
        throw afe;
      }
    }

    if (Thread.interrupted()) {
      throw new AssertionFailedError("interrupted status set in main thread");
    }
  }

  /**
   * Records the given exception using {@link #threadRecordFailure}, then rethrows the exception,

            } catch (InterruptedException ex) {
              interrupted = true; // note interruption and retry
            }
          }
          if (e == null) {
            break; // we already waited enough, and there are no more elements in sight
          }
          buffer.add(e);
          added++;
        }
      }
    } finally {
      if (interrupted) {
        Thread.currentThread().interrupt();
      }

   * The particular nature and strength of the guarantees made by the proxy is
   * implementation-dependent. However, it is important that each of the methods on the target
   * object behaves appropriately when its thread is interrupted.
   *
   * <p>For example, to return the value of {@code target.someMethod()}, but substitute {@code
   * DEFAULT_VALUE} if this method call takes over 50 ms, you can use this code:
   *
   * <pre>

  /**
   * Waits until the given future {@linkplain Future#isDone is done}, invoking the garbage collector
   * as necessary to try to ensure that this will happen.
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   */
  @SuppressWarnings("removal") // b/487687332
  public static void awaitDone(Future<?> future) {
    if (future.isDone()) {
      return;
    }
    long timeoutSeconds = timeoutSeconds();

 * the proxy. This proxy connection is called a "TLS Tunnel" and is specified by
 * [RFC 2817][1]. The HTTP CONNECT request that creates this tunnel connection is special: it
 * does not participate in any [interceptors][Interceptor] or [event listeners][EventListener]. It
 * doesn't include the motivating request's HTTP headers or even its full URL; only the target
 * server's hostname is sent to the proxy.
 *

    // Create a client with artificial delays.
    client =
      client
        .newBuilder()
        .addInterceptor(
          Interceptor { chain: Interceptor.Chain ->
            try {
              Thread.sleep(applicationInterceptorDelay)
              return@Interceptor chain.proceed(chain.request())
            } catch (e: InterruptedException) {
              throw InterruptedIOException()
            }