)
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()
    assertThat(eventRecorder.recordedEventTypes()).containsExactly(
      CallStart::class,
      ProxySelectStart::class,
      ProxySelectEnd::class,
      DnsStart::class,
      DnsEnd::class,
      ConnectStart::class,
      ConnectEnd::class,

    // In the process we made one successful connection attempt.
    assertThat(eventRecorder.recordedEventTypes().filter { it == ConnectStart::class }).hasSize(2)
    assertThat(eventRecorder.recordedEventTypes().filter { it == ConnectFailed::class }).hasSize(1)
    assertThat(eventRecorder.recordedEventTypes().filter { it == ConnectEnd::class }).hasSize(1)
  }

  @Test
  fun reachesIpv6WhenIpv4IsDown() {

          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()
    assertThat(listener.recordedEventTypes()).containsExactly(
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",
      "ConnectionReleased",
    )
  }

  @Test
  fun failedCallEventSequence() {
    server.enqueue(

      assertThat(response.body.string()).isEqualTo("normal request")
    }
    // Confirm there's no RequestBodyStart/RequestBodyEnd on failed upgrades.
    assertThat(eventRecorder.recordedEventTypes()).containsExactly(
      CallStart::class,
      ProxySelectStart::class,
      ProxySelectEnd::class,
      DnsStart::class,
      DnsEnd::class,
      ConnectStart::class,
      ConnectEnd::class,

    val recordedEventTypes = eventRecorder.recordedEventTypes()
    assertThat(recordedEventTypes).startsWith(
      CallStart::class,
      ProxySelectStart::class,
      ProxySelectEnd::class,
      DnsStart::class,
      DnsEnd::class,
      ConnectStart::class,
      SecureConnectStart::class,
    )
    assertThat(recordedEventTypes).endsWith(CallFailed::class)
  }

    executor.shutdown()
    client.newCall(request).enqueue(callback)
    callback.await(request.url).assertFailure(InterruptedIOException::class.java)
    assertThat(eventRecorder.recordedEventTypes())
      .containsExactly(CallStart::class, CallFailed::class)
  }

  @Test
  fun executionRejectedAfterMaxRequestsChange() {
    val request1 = newRequest("http://a/1")

      assertThat(
        TimeUnit.NANOSECONDS
          .toMillis(actualElapsedNs)
          .toDouble(),
      ).isCloseTo(elapsedMs.toDouble(), 100.0)
    }

    return result
  }

  fun recordedEventTypes() = eventSequence.map { it::class }

  fun clearAllEvents() {
    while (eventSequence.isNotEmpty()) {
      takeEvent()
    }
  }

  internal fun logEvent(e: CallEvent) {

      assertThat(
        TimeUnit.NANOSECONDS
          .toMillis(actualElapsedNs)
          .toDouble(),
      ).isCloseTo(elapsedMs.toDouble(), 100.0)
    }

    return result
  }

  fun recordedEventTypes() = eventSequence.map { it.name }

  fun clearAllEvents() {
    while (eventSequence.isNotEmpty()) {
      takeEvent()
    }
  }

  private fun logEvent(e: ConnectionEvent) {

    expectedEvents += ResponseBodyStart::class
    expectedEvents += ResponseBodyEnd::class
    expectedEvents += ConnectionReleased::class
    expectedEvents += CallEnd::class
    assertThat(eventRecorder.recordedEventTypes()).isEqualTo(expectedEvents)

    // Confirm that the connection pool was not corrupted by making another call.
    makeSimpleCall()
  }

  /**

    assertThat(source.request().url.encodedPath).isEqualTo("/")
    listener.assertOpen()
    listener.assertEvent(null, null, "hey")
    listener.assertClose()
    assertThat(eventRecorder.recordedEventTypes()).containsExactly(
      CallStart::class,
      ProxySelectStart::class,
      ProxySelectEnd::class,
      DnsStart::class,
      DnsEnd::class,
      ConnectStart::class,
      ConnectEnd::class,