HTTP_1_0.protocol -> HTTP_1_0
        HTTP_1_1.protocol -> HTTP_1_1
        H2_PRIOR_KNOWLEDGE.protocol -> H2_PRIOR_KNOWLEDGE
        HTTP_2.protocol -> HTTP_2
        SPDY_3.protocol -> SPDY_3
        QUIC.protocol -> QUIC
        else -> {
          // Support HTTP3 draft like h3-29
          if (protocol.startsWith(HTTP_3.protocol)) HTTP_3 else throw IOException("Unexpected protocol: $protocol")
        }

    }
  }

  override fun protocol(): Protocol = protocol!!

  override fun toString(): String {
    return "Connection{${route.address.url.host}:${route.address.url.port}," +
      " proxy=${route.proxy}" +
      " hostAddress=${route.socketAddress}" +
      " cipherSuite=${handshake?.cipherSuite ?: "none"}" +
      " protocol=$protocol}"
  }

  companion object {

      assertThat(response.protocol).isEqualTo(Protocol.HTTP_2)
    }
  }

  @Test
  fun testOkHttpSecureProxiedHttp1() {
    testRequest {
      val client =
        OkHttpClient.Builder()
          .trustMockServer()
          .proxy(Proxy(Proxy.Type.HTTP, it.remoteAddress()))
          .protocols(listOf(Protocol.HTTP_1_1))
          .build()

      val response =

        connectTls(sslSocket, connectionSpec)
        user.secureConnectEnd(handshake)
      } else {
        socket = rawSocket
        protocol =
          when {
            Protocol.H2_PRIOR_KNOWLEDGE in route.address.protocols -> Protocol.H2_PRIOR_KNOWLEDGE
            else -> Protocol.HTTP_1_1
          }
      }

      val connection =
        RealConnection(
          taskRunner = taskRunner,

      this.associatedStreamId = associatedStreamId
      this.headerBlock = headerBlock
    }

    override fun alternateService(
      streamId: Int,
      origin: String,
      protocol: ByteString,
      host: String,
      port: Int,
      maxAge: Long,
    ) {
      throw UnsupportedOperationException()
    }
  }

  companion object {

   */
  private fun enableProtocol(protocol: Protocol) {
    enableTls()
    client =
      client.newBuilder()
        .protocols(listOf(protocol, Protocol.HTTP_1_1))
        .build()
    server.protocols = client.protocols
  }

  private fun enableTls() {
    client =
      client.newBuilder()
        .sslSocketFactory(

    clientTestRule.recordTaskRunner = true
    return clientTestRule
  }

  fun setUp(
    protocol: Protocol,
    server: MockWebServer,
  ) {
    this.server = server
    this.protocol = protocol
    platform.assumeNotOpenJSSE()
    if (protocol === Protocol.HTTP_2) {
      platform.assumeHttp2Support()
      server.useHttps(handshakeCertificates.sslSocketFactory())
      client =

      val requestBody = request.body

      val connection = chain.connection()
      var requestStartMessage =
        ("--> ${request.method} ${redactUrl(request.url)}${if (connection != null) " " + connection.protocol() else ""}")
      if (!logHeaders && requestBody != null) {
        requestStartMessage += " (${requestBody.contentLength()}-byte body)"
      }
      logger.log(requestStartMessage)

      if (logHeaders) {

  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)
  }

  @Test
  fun getOne() {
    server.enqueue(

    }

    override fun body(): Sink = body
  }

  private class Entry {
    private val url: HttpUrl
    private val varyHeaders: Headers
    private val requestMethod: String
    private val protocol: Protocol
    private val code: Int
    private val message: String
    private val responseHeaders: Headers
    private val handshake: Handshake?
    private val sentRequestMillis: Long