.build(),
      )
    assertFailsWith<ProtocolException> {
      call.execute()
    }
  }

  @Test
  fun trueDuplexClientWritesFirst() {
    enableProtocol(Protocol.HTTP_2)
    val body =
      MockStreamHandler()
        .receiveRequest("request A\n")
        .sendResponse("response B\n")
        .receiveRequest("request C\n")
        .sendResponse("response D\n")

        .socketFactory(socketFactory)
        .eventListenerFactory(clientTestRule.wrap(listener))
        .build()
  }

  @Test
  fun http2OneBadHostOneGoodNoRetryOnConnectionFailure() {
    enableProtocol(Protocol.HTTP_2)

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

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

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

          .build()

      val response = client.newCall(request).execute()

      response.use {
        assertEquals(Protocol.HTTP_2, response.protocol)
        assertEquals(200, response.code)
        // see https://github.com/google/conscrypt/blob/b9463b2f74df42d85c73715a5f19e005dfb7b802/android/src/main/java/org/conscrypt/Platform.java#L613
        when {

      .assertNoMoreLogs()
  }

  @Test
  fun connectFail() {
    assumeNotWindows()
    server.useHttps(handshakeCertificates.sslSocketFactory())
    server.protocols = Arrays.asList(Protocol.HTTP_2, Protocol.HTTP_1_1)
    server.enqueue(
      MockResponse.Builder()
        .socketPolicy(FailHandshake)
        .build(),
    )
    url = server.url("/")
    try {

    }

    /**
     * When [protocols][MockWebServer.protocols] include [HTTP_2][okhttp3.Protocol], this attaches a
     * pushed stream to this response.
     */
    fun addPush(promise: PushPromise) =
      apply {
        this.pushPromises += promise
      }

    /**
     * When [protocols][MockWebServer.protocols] include [HTTP_2][okhttp3.Protocol], this pushes
     * [settings] before writing the response.

   * must contain [Protocol.HTTP_1_1]. It must not contain null.
   *
   * This list is ignored when [negotiation is disabled][protocolNegotiationEnabled].
   */
  var protocols: List<Protocol> = immutableListOf(Protocol.HTTP_2, Protocol.HTTP_1_1)
    set(value) {
      val protocolList = value.toImmutableList()
      require(Protocol.H2_PRIOR_KNOWLEDGE !in protocolList || protocolList.size == 1) {

  private lateinit var server: MockWebServer
  private lateinit var dns: Dns
  private val cacheFs = FakeFileSystem()
  private val bootstrapClient =
    OkHttpClient.Builder()
      .protocols(listOf(Protocol.HTTP_2, Protocol.HTTP_1_1))
      .build()

  @BeforeEach
  fun setUp(server: MockWebServer) {
    this.server = server
    server.protocols = bootstrapClient.protocols
    dns = buildLocalhost(bootstrapClient, false)

  }

  @Throws(Exception::class)
  private fun readResponse(
    hostname: String,
    response: Response,
  ): List<InetAddress> {
    if (response.cacheResponse == null && response.protocol !== Protocol.HTTP_2 && response.protocol !== Protocol.QUIC) {
      Platform.get().log("Incorrect protocol: ${response.protocol}", Platform.WARN)
    }

    response.use {
      if (!response.isSuccessful) {

    }
  }

  private fun enableHttps() {
    enableHttpsAndAlpn(Protocol.HTTP_1_1)
  }

  private fun enableHttp2() {
    platform.assumeHttp2Support()
    enableHttpsAndAlpn(Protocol.HTTP_2, Protocol.HTTP_1_1)
  }

  private fun enableHttpsAndAlpn(vararg protocols: Protocol) {
    client =
      client.newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),

    url = server.url("/")
    setLevel(Level.BASIC)
    server.enqueue(MockResponse())
    val response = client.newCall(request().build()).execute()
    Assumptions.assumeTrue(response.protocol == Protocol.HTTP_2)
    applicationLogs
      .assertLogEqual("--> GET $url")
      .assertLogMatch(Regex("""<-- 200 $url \(\d+ms, 0-byte body\)"""))
      .assertNoMoreLogs()
    networkLogs
      .assertLogEqual("--> GET $url h2")