dispatcher.maxRequests = 2
    client.newCall(newRequest("http://a/1")).enqueue(callback)
    client.newCall(newRequest("http://b/1")).enqueue(callback)
    client.newCall(newRequest("http://c/1")).enqueue(callback)
    client.newCall(newRequest("http://a/2")).enqueue(callback)
    client.newCall(newRequest("http://b/2")).enqueue(callback)
    dispatcher.maxRequests = 4

  ) {
    setUp(protocol, mockWebServer)
    server.enqueue(
      MockResponse.Builder()
        .body(Buffer().write(ByteArray(Http2Connection.OKHTTP_CLIENT_WINDOW_SIZE + 1)))
        .build(),
    )
    server.enqueue(
      MockResponse(body = "abc"),
    )
    // Enqueue an additional response that show if we burnt a good prior response.
    server.enqueue(
      MockResponse(body = "XXX"),
    )

    server.enqueue(MockResponse())
    val request =
      Request.Builder()
        .url(server.url("/"))
        .post(sleepingRequestBody(500))
        .build()
    val latch = CountDownLatch(1)
    val exceptionRef = AtomicReference<Throwable>()
    val call = client.newCall(request)
    call.timeout().timeout(250, TimeUnit.MILLISECONDS)
    call.enqueue(
      object : Callback {

    webServer.enqueue(
      MockResponse.Builder()
        .code(408)
        .build(),
    )
    webServer.enqueue(
      MockResponse.Builder()
        .webSocketUpgrade(serverListener)
        .build(),
    )
    val webSocket: WebSocket = newWebSocket()
    clientListener.assertOpen()
    val server = serverListener.assertOpen()
    webSocket.send("abc")
    serverListener.assertTextMessage("abc")

  }

  @Test
  fun http2OneBadHostOneGoodRetryOnConnectionFailure() {
    enableProtocol(Protocol.HTTP_2)

    val request = Request(server1.url("/"))

    server1.enqueue(refusedStream)
    server1.enqueue(refusedStream)
    server2.enqueue(bodyResponse)

    dns[server1.hostName] = listOf(ipv6, ipv4)
    socketFactory[ipv6] = server1.inetSocketAddress
    socketFactory[ipv4] = server2.inetSocketAddress

        .url(server.url("/"))
        .build()
    client.newCall(request).enqueue(callback)
    callback.await(request.url)
      .assertCode(200)
      .assertHeader("OkHttp-Intercepted", "yep")
  }

  @Test
  fun applicationInterceptorsCanMakeMultipleRequestsToServer() {
    server.enqueue(MockResponse.Builder().body("a").build())
    server.enqueue(MockResponse.Builder().body("b").build())
    client =

          },
        )
        .build()

    // Set up a same-connection retry.
    serverIpv4.enqueue(
      MockResponse(socketPolicy = ResetStreamAtStart(ErrorCode.REFUSED_STREAM.httpCode)),
    )
    serverIpv4.enqueue(
      MockResponse(body = "this was the 2nd request on IPv4"),
    )
    serverIpv6.enqueue(
      MockResponse(body = "unexpected call to IPv6"),
    )

    enableTlsWithTunnel()
    server.enqueue(
      MockResponse.Builder()
        .inTunnel()
        .code(407)
        .addHeader("Proxy-Authenticate: Basic realm=\"localhost\"")
        .addHeader("Connection: close")
        .build(),
    )
    server.enqueue(
      MockResponse.Builder()
        .inTunnel()
        .build(),
    )
    server.enqueue(MockResponse())
    client =

    this.server = server
    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()

    server.enqueue(
      MockResponse(
        body = "This connection won't pool properly",
        socketPolicy = socketPolicy,
      ),
    )
    val responseAfter = MockResponse(body = "This comes after a busted connection")
    server.enqueue(responseAfter)
    server.enqueue(responseAfter) // Enqueue 2x because the broken connection may be reused.