// The first call times out.
    val call1 = client.newCall(Request(server.url("/")))
    assertFailsWith<SocketTimeoutException> {
      call1.execute().use { response ->
        response.body.string()
      }
    }

    // The second call succeeds.
    val call2 = client.newCall(Request(server.url("/")))
    call2.execute().use { response ->
      assertThat(

    // makeSimpleCall() because it uses the MockResponse enqueued above.
    val callB = client.newCall(Request(server.url("/")))
    callB.execute().use { response ->
      assertThat(response.body.string()).isEqualTo("abc")
    }
  }

  private fun makeSimpleCall() {
    server.enqueue(MockResponse(body = "healthy"))
    val callB = client.newCall(Request(server.url("/")))

        .build(),
    )
    var call =
      client.newCallWithListener(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )
    var response = call.execute()
    assertThat(response.code).isEqualTo(200)
    response.close()
    eventRecorder.clearAllEvents()
    call = call.cloneWithListener()
    response = call.execute()

        .build(),
    )

    val call1 = client.newCall(Request(server.url("/")))
    call1.execute().use { response ->
      val source = response.body.source()
      assertThat(response.header("h1")).isEqualTo("v1")
      assertThat(source.readUtf8()).isEqualTo("Hello")
      assertThat(response.trailers()).isEqualTo(headersOf("t1", "v2"))
    }

    val call2 = client.newCall(Request(server.url("/")))

    computeIfAbsent: () -> T,
  ): T

  /**
   * Create a new, identical call to this one which can be enqueued or executed even if this call
   * has already been.
   *
   * The tags on the returned call will equal the tags as on [request]. Any tags that were computed
   * for this call will not be included on the cloned call. If necessary you may manually copy over
   * specific tags by re-computing them:
   *

        .url("https://square.com")
        .build()
    val callA = client.newCall(request)
    assertThat(callA.tag(String::class) { "a" }).isEqualTo("a")
    assertThat(callA.tag(String::class) { "b" }).isEqualTo("a")

    val callB = callA.clone()
    assertThat(callB.tag(String::class) { "c" }).isEqualTo("c")
    assertThat(callB.tag(String::class) { "d" }).isEqualTo("c")
  }

  }

  /**
   * Cancel all calls currently enqueued or executing. Includes calls executed both
   * [synchronously][Call.execute] and [asynchronously][Call.enqueue].
   */
  @Synchronized
  fun cancelAll() {
    for (call in readyAsyncCalls) {
      call.call.cancel()
    }
    for (call in runningAsyncCalls) {
      call.call.cancel()
    }
    for (call in runningSyncCalls) {
      call.cancel()

      call: Call,
      dispatcher: Dispatcher,
    ) {
      for (delegate in eventListeners) {
        delegate.dispatcherQueueEnd(call, dispatcher)
      }
    }

    override fun proxySelectStart(
      call: Call,
      url: HttpUrl,
    ) {
      for (delegate in eventListeners) {
        delegate.proxySelectStart(call, url)
      }
    }

    override fun proxySelectEnd(
      call: Call,

  }

  fun finishJob(url: String) {
    val i = calls.iterator()
    while (i.hasNext()) {
      val call = i.next()
      if (call.request.url.toString() == url) {
        i.remove()
        dispatcherTest.dispatcher.finishedAccessor(call)
        return
      }
    }
    throw AssertionError("No such job: $url")
  }

  override fun shutdown() {
    shutdown = true
  }

      }

      else -> {
        // No connections, idle or in use.
        return -1
      }
    }
  }

  /**
   * Prunes any leaked calls and then returns the number of remaining live calls on [connection].
   * Calls are leaked if the connection is tracking them but the application code has abandoned
   * them. Leak detection is imprecise and relies on garbage collection.
   */