/** Returns the SSL socket factory, or null if this is not an HTTPS address. */
  @get:JvmName("sslSocketFactory") val sslSocketFactory: SSLSocketFactory?,
  /** Returns the hostname verifier, or null if this is not an HTTPS address. */
  @get:JvmName("hostnameVerifier") val hostnameVerifier: HostnameVerifier?,
  /** Returns this address's certificate pinner, or null if this is not an HTTPS address. */

    InetAddress addressV6_66_ff = InetAddress.getByName("2001:db8::66ff");
    InetAddress addressV6_67_0 = InetAddress.getByName("2001:db8::6700");

    InetAddress address = addressV6_66_0;
    for (int i = 0; i < 255; i++) {
      address = InetAddresses.increment(address);
    }
    assertEquals(addressV6_66_ff, address);

    address = InetAddresses.increment(address);
    assertEquals(addressV6_67_0, address);

   *
   * @param ip {@link Inet6Address} to be examined for embedded IPv4 in 6to4 address
   * @return {@link Inet4Address} of embedded IPv4 in 6to4 address
   * @throws IllegalArgumentException if the argument is not a valid IPv6 6to4 address
   */
  public static Inet4Address get6to4IPv4Address(Inet6Address ip) {

func isHostIP(ipAddress string) bool {
	host, _, err := net.SplitHostPort(ipAddress)
	if err != nil {
		host = ipAddress
	}
	// Strip off IPv6 zone information.
	if i := strings.Index(host, "%"); i > -1 {
		host = host[:i]
	}
	return net.ParseIP(host) != nil
}

// extractHostPort - extracts host/port from many address formats

    InetAddress addressV6_66_ff = InetAddress.getByName("2001:db8::66ff");
    InetAddress addressV6_67_0 = InetAddress.getByName("2001:db8::6700");

    InetAddress address = addressV6_66_0;
    for (int i = 0; i < 255; i++) {
      address = InetAddresses.increment(address);
    }
    assertEquals(addressV6_66_ff, address);

    address = InetAddresses.increment(address);
    assertEquals(addressV6_67_0, address);

  }

  private fun assertRoute(
    route: Route,
    address: Address,
    proxy: Proxy,
    socketAddress: InetAddress,
    socketPort: Int,
  ) {
    assertThat(route.address).isEqualTo(address)
    assertThat(route.proxy).isEqualTo(proxy)
    assertThat(route.socketAddress.address).isEqualTo(socketAddress)
    assertThat(route.socketAddress.port).isEqualTo(socketPort)
  }

  //
  if (b != address.size) {
    if (compress == -1) return null // Address didn't have compression or enough groups.
    address.copyInto(address, address.size - (b - compress), compress, b)
    address.fill(0.toByte(), compress, compress + (address.size - b))
  }

  return address
}

/** Decodes an IPv4 address suffix of an IPv6 address, like 1111::5555:6666:192.168.0.1. */

  private val addressA = factory.newAddress("a")
  private val routeA1 = factory.newRoute(addressA)
  private val addressB = factory.newAddress("b")
  private val routeB1 = factory.newRoute(addressB)
  private val addressC = factory.newAddress("c")
  private val routeC1 = factory.newRoute(addressC)

  @AfterEach fun tearDown() {
    factory.close()
    peer.close()
  }

      proxySelector = proxySelector,
    )
  }

  fun newRoute(
    address: Address = newAddress(),
    proxy: Proxy = this.proxy,
    socketAddress: InetSocketAddress = InetSocketAddress.createUnresolved(uriHost, uriPort),
  ): Route {
    return Route(
      address = address,
      proxy = proxy,
      socketAddress = socketAddress,
    )
  }

				if strings.Contains(err.Error(), "The requested address is not valid in its context") {
					// Ignore if IP is unbindable.
					continue nextTest
				}
				if strings.Contains(err.Error(), "bind: address already in use") {
					continue nextTest
				}
				t.Fatalf("Test %d: error: expected = <nil>, got = %v", i+1, err)
			}
		}

		addrs := listener.Addrs()
		addrSet := set.NewStringSet()
		for _, addr := range addrs {