override fun isConnected(): Boolean = delegate!!.isConnected

  override fun isClosed(): Boolean = delegate!!.isClosed

  @Throws(IOException::class)
  override fun bind(localAddr: SocketAddress) {
    delegate!!.bind(localAddr)
  }

  @Throws(IOException::class)
  override fun connect(remoteAddr: SocketAddress) {
    delegate!!.connect(remoteAddr)
  }

 2. It attempts to retrieve a connection with that address from the **connection pool**.
 3. If it doesn't find a connection in the pool, it selects a **route** to attempt. This usually means making a DNS request to get the server's IP addresses. It then selects a TLS version and proxy server if necessary.

    assertThat(listener.recordedEventTypes().filter { it == "ConnectFailed" }).hasSize(1)
    assertThat(listener.recordedEventTypes().filter { it == "ConnectEnd" }).hasSize(1)
  }

  @Test
  fun reachesIpv6WhenIpv4IsDown() {
    serverIpv4.close()
    serverIpv6.enqueue(
      MockResponse(body = "hello from IPv6"),
    )

0002 0.019 dnsEnd
0001 0.028 connectStart
0002 0.025 connectStart
0002 0.072 secureConnectStart
0001 0.075 secureConnectStart
0001 0.386 secureConnectEnd
0002 0.390 secureConnectEnd
0002 0.400 connectEnd
0001 0.403 connectEnd
0002 0.401 connectionAcquired
0001 0.404 connectionAcquired
0001 0.406 requestHeadersStart
0002 0.403 requestHeadersStart
0001 0.414 requestHeadersEnd
0002 0.411 requestHeadersEnd

    assertThat(clientTestRule.recordedConnectionEventTypes()).containsExactly(
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",
      "NoNewExchanges",
      "ConnectionReleased",
      "ConnectionClosed",
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",
      "ConnectionReleased",
    )
  }

  @Test

    assertThat(connectStart.proxy).isEqualTo(Proxy.NO_PROXY)
    val connectEnd = listener.removeUpToEvent<CallEvent.ConnectEnd>()
    assertThat(connectEnd.call).isSameAs(call)
    assertThat(connectEnd.inetSocketAddress).isEqualTo(expectedAddress)
    assertThat(connectEnd.protocol).isEqualTo(Protocol.HTTP_1_1)
  }

  @Test
  fun failedConnect() {
    enableTlsWithTunnel()

   * @param values a series of values, which will be converted to {@code double} values (this may
   *     cause loss of precision)
   */
  public void addAll(Iterable<? extends Number> values) {
    for (Number value : values) {
      add(value.doubleValue());
    }
  }

  /**
   * Adds the given values to the dataset.
   *
   * @param values a series of values, which will be converted to {@code double} values (this may

    this.min = min;
    this.max = max;
  }

  /**
   * Returns statistics over a dataset containing the given values.
   *
   * @param values a series of values, which will be converted to {@code double} values (this may
   *     cause loss of precision)
   */
  public static Stats of(Iterable<? extends Number> values) {
    StatsAccumulator accumulator = new StatsAccumulator();

    response.body.close()
    assertThat(listener.recordedEventTypes()).containsExactly(
      "ConnectStart",
      "ConnectEnd",
      "ConnectionAcquired",
      "ConnectionReleased",
    )
    val event = listener.removeUpToEvent(ConnectionEvent.ConnectEnd::class.java)
    assertThat(event.connection.route().proxy).isEqualTo(proxy)
  }

  private fun enableTls() {
    client =
      client

    val connect1 = server.takeRequest()
    assertThat(connect1.requestLine).isEqualTo("CONNECT android.com:443 HTTP/1.1")
    assertThat(connect1.headers["Proxy-Authorization"]).isNull()
    val connect2 = server.takeRequest()
    assertThat(connect2.requestLine).isEqualTo("CONNECT android.com:443 HTTP/1.1")
    assertThat(connect2.headers["Proxy-Authorization"]).isEqualTo("password")