client.newBuilder()
        .dns { listOf() }
        .build()
        .routeDatabase,
    )
    assertNotSame(
      client.routeDatabase,
      client.newBuilder()
        .proxyAuthenticator { _: Route?, _: Response? -> null }
        .build()
        .routeDatabase,
    )
    assertNotSame(
      client.routeDatabase,
      client.newBuilder()

        .body("abc")
        .build(),
    )
    val ipAddress = InetAddress.getLoopbackAddress().hostAddress
    val call =
      client.newCall(
        Request.Builder()
          .url(server.url("/").newBuilder().host(ipAddress!!).build())
          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")

    val request = Request(server.url("/"))
    assertConnectionNotReused(request, request)
  }

  @Test
  fun connectionsAreNotReusedIfPoolIsSizeZero() {
    client =
      client.newBuilder()
        .connectionPool(ConnectionPool(0, 5, TimeUnit.SECONDS))
        .build()
    server.enqueue(MockResponse(body = "a"))
    server.enqueue(MockResponse(body = "b"))
    val request = Request(server.url("/"))

      client =
        client.newBuilder()
          .sslSocketFactory(
            handshakeCertificates.sslSocketFactory(),
            handshakeCertificates.trustManager,
          )
          .hostnameVerifier(RecordingHostnameVerifier())
          .build()
    }
    server.enqueue(MockResponse())
    client =
      client.newBuilder()
        .socketFactory(uselessSocketFactory)

  // 4. successful stale cached GET response
  // 5. unsuccessful response
  @Test
  fun usesCache() {
    val cache = Cache(cacheFs, "cache".toPath(), (100 * 1024).toLong())
    val cachedClient = bootstrapClient.newBuilder().cache(cache).build()
    val cachedDns = buildLocalhost(cachedClient, false)

    repeat(2) {
      server.enqueue(
        dnsResponse(

        "CN=localhost",
        (response.handshake!!.peerCertificates.single() as X509Certificate).subjectDN.name,
      )
    }
  }

  private fun enableTls() {
    client =
      client.newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        )
        .build()

      "Request header not permitted: 'Sec-WebSocket-Extensions'",
    )
  }

  @Test
  fun webSocketAndApplicationInterceptors() {
    val interceptedCount = AtomicInteger()
    client =
      client.newBuilder()
        .addInterceptor(
          Interceptor { chain: Interceptor.Chain ->
            assertThat(chain.request().body).isNull()
            val response = chain.proceed(chain.request())

      this.informationalResponses = mockResponse.informationalResponses.toMutableList()
      this.status = mockResponse.status
      this.headers = mockResponse.headers.newBuilder()
      this.trailers = mockResponse.trailers.newBuilder()
      this.bodyVar = mockResponse.body
      this.streamHandlerVar = mockResponse.streamHandler
      this.webSocketListenerVar = mockResponse.webSocketListener

  @set:JvmName("headers")
  var headers: Headers
    get() = headersBuilder.build()
    set(value) {
      this.headersBuilder = value.newBuilder()
    }

  @set:JvmName("trailers")
  var trailers: Headers
    get() = trailersBuilder.build()
    set(value) {
      this.trailersBuilder = value.newBuilder()
    }

  private var body: Buffer? = null

  var throttleBytesPerPeriod: Long = Long.MAX_VALUE
    private set

   */
  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(
          handshakeCertificates.sslSocketFactory(),