.setHeader("Sec-WebSocket-Accept", "ujmZX4KXZqjwy6vi1aQFH5p4Ygk=")
        .build(),
    )
    webServer.enqueue(
      MockResponse
        .Builder()
        .onRequestStart(CloseSocket())
        .build(),
    )
    val webSocket = newWebSocket()
    clientListener.assertFailure(
      101,
      null,
      ProtocolException::class.java,

      MockResponse
        .Builder()
        .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))

     * @param request The request data.
     * @return The response data.
     */
    @Override
    public ResponseData execute(final RequestData request) {
        if (listener != null) {
            listener.onRequestStart(this, request);
        }

        List<Exception> exceptionList = null;
        try {
            int count = 0;
            while (count < maxRetryCount) {
                if (listener != null) {

            }
          },
        ).build()

    // Set up a same-connection retry.
    serverIpv4.enqueue(
      MockResponse
        .Builder()
        .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))
        .build(),
    )
    serverIpv4.enqueue(
      MockResponse(body = "this was the 2nd request on IPv4"),
    )
    serverIpv6.enqueue(

  val dns = FakeDns()

  val ipv4 = InetAddress.getByName("203.0.113.1")
  val ipv6 = InetAddress.getByName("2001:db8:ffff:ffff:ffff:ffff:ffff:1")

  val refusedStream =
    MockResponse
      .Builder()
      .onRequestStart(CloseStream(ErrorCode.REFUSED_STREAM.httpCode))
      .build()
  val bodyResponse = MockResponse(body = "body")

  @BeforeEach
  fun setUp() {

  }

  @Disabled("Not actually failing where expected")
  @Test
  fun disconnectAtStart() {
    server.enqueue(
      MockResponse
        .Builder()
        .onRequestStart(CloseSocket())
        .build(),
    )
    server.enqueue(MockResponse()) // The jdk's HttpUrlConnection is a bastard.
    server.enqueue(MockResponse())
    try {
      server
        .url("/a")

        ),
      )
    }

    SocketPolicy.STALL_SOCKET_AT_START -> {
      result.onRequestStart(SocketEffect.Stall)
    }

    SocketPolicy.NO_RESPONSE -> {
      result.onResponseStart(SocketEffect.Stall)
    }

    SocketPolicy.RESET_STREAM_AT_START -> {
      result.onRequestStart(CloseStream(http2ErrorCode))
    }
  }

      }
  }

  /** https://github.com/square/okhttp/issues/4875  */
  @Test
  fun interceptorRecoversWhenRoutesExhausted() {
    server.enqueue(MockResponse.Builder().onRequestStart(CloseSocket()).build())
    server.enqueue(MockResponse())
    client =
      client
        .newBuilder()
        .addInterceptor(
          Interceptor { chain: Interceptor.Chain ->

      } catch (e: SocketException) {
        logger.fine("${this@MockWebServer} done accepting connections: ${e.message}")
        return
      }

      val peek = dispatcher.peek()
      if (peek.onRequestStart is CloseSocket) {
        dispatchBookkeepingRequest(
          connectionIndex = nextConnectionIndex++,
          exchangeIndex = 0,
          socket = MockWebServerSocket(socket),
        )

      sinkReference.get().write("ghi".toByteArray())
      sinkReference.get().emit()
    }
  }

  @Test
  fun getHeadersThrows() {
    server.enqueue(MockResponse.Builder().onRequestStart(CloseSocket()).build())
    assertFailsWith<IOException> {
      getResponse(newRequest("/"))
    }
  }

  @Test
  fun dnsFailureThrowsIOException() {
    client =
      client