@JvmField val TLS_RSA_WITH_NULL_SHA = init("SSL_RSA_WITH_NULL_SHA", 0x0002)

    @JvmField val TLS_RSA_EXPORT_WITH_RC4_40_MD5 = init("SSL_RSA_EXPORT_WITH_RC4_40_MD5", 0x0003)

    @JvmField val TLS_RSA_WITH_RC4_128_MD5 = init("SSL_RSA_WITH_RC4_128_MD5", 0x0004)

    @JvmField val TLS_RSA_WITH_RC4_128_SHA = init("SSL_RSA_WITH_RC4_128_SHA", 0x0005)

```mermaid
graph TD
    subgraph ConfigStore
        xcs(XDS Client)
        ccs(CRD Client)
        fcs(Filesystem Client)
        acs(Aggregate)
        xcs-->acs
        ccs-->acs
        fcs-->acs
    end
```

#### ServiceDiscovery

    assertThat(client.processNextFrame()).isFalse()
    client.listener.assertClosing(1000, "Goodbye!")
    client.webSocket!!.finishReader()
    server.listener.assertClosed(1000, "Hello!")
    client.listener.assertClosed(1000, "Goodbye!")
  }

  @Test
  fun clientCloseThenMethodsReturnFalse() {
    client.webSocket!!.close(1000, "Hello!")
    assertThat(client.webSocket!!.close(1000, "Hello!")).isFalse()

    client.newWebSocket(newRequest("http://a/2"), webSocketListener)
    client.newWebSocket(newRequest("http://a/3"), webSocketListener)
    executor.assertJobs("http://a/1", "http://a/2", "http://a/3")
  }

  @Test
  fun increasingMaxRequestsPromotesJobsImmediately() {
    dispatcher.maxRequests = 2
    client.newCall(newRequest("http://a/1")).enqueue(callback)
    client.newCall(newRequest("http://b/1")).enqueue(callback)

        .message("Intercepted!")
        .body("abc".toResponseBody("text/plain; charset=utf-8".toMediaType()))
        .build()
    client =
      client.newBuilder()
        .addInterceptor(Interceptor { chain: Interceptor.Chain? -> interceptorResponse })
        .build()
    val response = client.newCall(request).execute()
    assertThat(response).isSameInstanceAs(interceptorResponse)
  }

  @Test

  }

  private fun enableProtocol(protocol: Protocol) {
    enableTls()
    client =
      client.newBuilder()
        .protocols(listOf(protocol, Protocol.HTTP_1_1))
        .build()
    server1.protocols = client.protocols
    server2.protocols = client.protocols
  }

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

    // Sleep longer than the HTTP client's read timeout.
    Thread.sleep((client.readTimeoutMillis + 500).toLong())
    server.send("abc")
    clientListener.assertTextMessage("abc")
    closeWebSockets(webSocket, server)
  }

  @Test
  @Throws(Exception::class)
  fun clientPingsServerOnInterval() {
    client =
      client.newBuilder()
        .pingInterval(Duration.ofMillis(500))

  fun okHttpClient() {
    val client = OkHttpClient()
    val dispatcher: Dispatcher = client.dispatcher()
    val proxy: Proxy? = client.proxy()
    val protocols: List<Protocol> = client.protocols()
    val connectionSpecs: List<ConnectionSpec> = client.connectionSpecs()
    val interceptors: List<Interceptor> = client.interceptors()
    val networkInterceptors: List<Interceptor> = client.networkInterceptors()

      )
    serverIpv4.shutdown()
    serverIpv6.enqueue(
      MockResponse(body = "hello from IPv6"),
    )

    client =
      client.newBuilder()
        .fastFallback(false)
        .callTimeout(1_000, TimeUnit.MILLISECONDS)
        .build()
    val call = client.newCall(Request(url))
    assertFailsWith<IOException> {
      call.execute()
    }.also { expected ->

  private val client = clientTestRule.newClient()

  private lateinit var server: MockWebServer

  @BeforeEach
  fun setUp(server: MockWebServer) {
    this.server = server
  }

  @Test
  fun defaultConfigIsNoTimeout() {
    val request =
      Request.Builder()
        .url(server.url("/"))
        .build()
    val call = client.newCall(request)