* Attempts to remove a single frame from a queue and send it. This prefers to write urgent pongs
   * before less urgent messages and close frames. For example, it's possible that a caller will
   * enqueue messages followed by pongs, but this sends pongs followed by messages. Pongs are always
   * written in the order they were enqueued.
   *
   * If a frame cannot be sent - because there are none enqueued or because the web socket is not

          sendResponse("server says hello\n")
          receiveRequest("client says goodbye\n")
          sendResponse("server says goodbye\n")
          exhaustResponse()
          exhaustRequest()
        }
    server.enqueue(socketHandler.upgradeResponse())

    client
      .newCall(
        upgradeRequest(),
      ).execute()
      .use { response ->
        assertThat(response.code).isEqualTo(HTTP_SWITCHING_PROTOCOLS)

   * that enqueued messages were not transmitted.
   */
  fun queueSize(): Long

  /**
   * Attempts to enqueue `text` to be UTF-8 encoded and sent as a the data of a text (type `0x1`)
   * message.
   *
   * This method returns true if the message was enqueued. Messages that would overflow the outgoing
   * message buffer will be rejected and trigger a [graceful shutdown][close] of this web socket.

  @BeforeEach
  fun setUp() {
    socksProxy.play()
  }

  @AfterEach
  fun tearDown() {
    socksProxy.shutdown()
  }

  @Test
  fun proxy() {
    server.enqueue(MockResponse.Builder().body("abc").build())
    server.enqueue(MockResponse.Builder().body("def").build())
    val client =
      clientTestRule
        .newClientBuilder()
        .proxy(socksProxy.proxy())
        .build()

    val eventListener = RecordingEventListener()

    enableTls()

    client = client.newBuilder().eventListenerFactory(clientTestRule.wrap(eventListener)).build()

    server.enqueue(MockResponse(body = "abc1"))
    server.enqueue(MockResponse(body = "abc2"))

    val request = Request.Builder().url(server.url("/")).build()

    client.newCall(request).execute().use { response ->
      assertEquals(200, response.code)

  }

  @Test
  fun failureWith401IsReadable() {
    server.enqueue(
      MockResponse(
        code = 401,
        body = "{\"error\":{\"message\":\"No auth credentials found\",\"code\":401}}",
        headers = Headers.headersOf("content-type", "application/json"),
      ),
    )
    server.enqueue(
      MockResponse(
        body =
          """
          |data: hey
          |

    val callFailure = CompletableFuture<Exception>()

    server.enqueue(
      MockResponse()
        .setSocketPolicy(SocketPolicy.STALL_SOCKET_AT_START),
    )
    server.start()
    val call =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )
    call.enqueue(
      object : Callback {
        override fun onFailure(

  private void enqueueStartingEvent() {
    listeners.enqueue(STARTING_EVENT);
  }

  private void enqueueRunningEvent() {
    listeners.enqueue(RUNNING_EVENT);
  }

  private void enqueueStoppingEvent(State from) {
    if (from == State.STARTING) {
      listeners.enqueue(STOPPING_FROM_STARTING_EVENT);
    } else if (from == State.RUNNING) {
      listeners.enqueue(STOPPING_FROM_RUNNING_EVENT);
    } else {

        }
    }
  }

  companion object {
    /**
     * Enqueues a [Call] and process it as [EventSource] with [listener].
     */
    @JvmStatic
    @JvmName("enqueue")
    fun Call.enqueueEventSource(listener: EventSourceListener): EventSource = RealEventSource(this, listener).also(this::enqueue)

    /**
     * Processes the existing response with [listener].
     */
    @JvmStatic

          handshakeCertificates.trustManager,
        ).proxy(server.proxyAddress)
        .build()

    server.enqueue(
      MockResponse
        .Builder()
        .inTunnel()
        .build(),
    )
    server.enqueue(MockResponse())

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