serverAddress: InetSocketAddress,
  ): Future<Handshake> {
    return executorService.submit<Handshake> {
      SocketFactory.getDefault().createSocket().use { rawSocket ->
        rawSocket.connect(serverAddress)
        val sslSocket =
          client.sslSocketFactory().createSocket(
            rawSocket,
            rawSocket.inetAddress.hostAddress,
            rawSocket.port,
            true,
          ) as SSLSocket

  /** Sets the [real] address for [requested].  */
  operator fun set(
    requested: InetAddress,
    real: InetSocketAddress,
  ) {
    hostMapping[requested] = real
  }

  override fun createSocket(): Socket =
    object : Socket() {
      override fun connect(
        endpoint: SocketAddress?,
        timeout: Int,
      ) {
        val requested = (endpoint as InetSocketAddress)

  )
}

fun systemDefault(
  name: String,
  version: String,
  ianaSuites: IanaSuites,
): Client {
  val socketFactory = SSLSocketFactory.getDefault() as SSLSocketFactory
  val sslSocket = socketFactory.createSocket() as SSLSocket

  return Client(
    userAgent = name,
    version = version,
    enabled = sslSocket.enabledCipherSuites.map { ianaSuites.fromJavaName(it) },

    // sslV3 is not used because SSLv3 is not enabled on the socket.
  }

  private fun createSocketWithEnabledProtocols(vararg tlsVersions: TlsVersion): SSLSocket =
    (handshakeCertificates.sslSocketFactory().createSocket() as SSLSocket).apply {
      enabledProtocols = javaNames(*tlsVersions)
    }

  private fun assertEnabledProtocols(
    socket: SSLSocket,
    vararg required: TlsVersion,
  ) {

        .isInstanceOf<SSLSocketImpl>()
    }
  }

  @Test
  fun testSupportedProtocols() {
    val factory = SSLSocketFactoryImpl()
    val s = factory.createSocket() as SSLSocketImpl

    assertEquals(listOf("TLSv1.3", "TLSv1.2"), s.enabledProtocols.toList())
  }

  @Test
  @Disabled
  fun testMozilla() {
    assumeNetwork()

      object : DelegatingSocketFactory(SocketFactory.getDefault()) {
        var first = true

        override fun createSocket(): Socket {
          if (first) {
            first = false
            firstConnectLatch.await()
          }
          return super.createSocket()
        }
      }

    client =
      client
        .newBuilder()

        }

        call.eventListener.secureConnectStart(call)

        // Create the wrapper over the connected socket.
        val sslSocket =
          route.address.sslSocketFactory.createSocket(
            rawSocket,
            route.address.url.host,
            route.address.url.port,
            // autoClose:
            true,
          ) as SSLSocket

        socket?.closeQuietly()
      }
    }
  }

  private fun doSsl(socket: Socket): SSLSocket {
    val sslSocket =
      sslSocketFactory.createSocket(
        socket,
        socket.inetAddress.hostAddress,
        socket.port,
        true,
      ) as SSLSocket
    sslSocket.useClientMode = false

    }
  }

  @Test
  fun testSupportedProtocols() {
    val factory = SSLSocketFactory.getDefault()
    assertThat(factory.javaClass.name).isEqualTo("sun.security.ssl.SSLSocketFactoryImpl")
    val s = factory.createSocket() as SSLSocket

    when {
      PlatformVersion.majorVersion > 11 ->
        assertThat(s.enabledProtocols.toList()).containsExactly(
          "TLSv1.3",
          "TLSv1.2",
        )

    val size: Int = formBody.size()
  }

  @Test @Disabled
  fun handshake() {
    val handshake: Handshake =
      Handshake.get((localhost().sslSocketFactory().createSocket() as SSLSocket).session)
    val tlsVersion: TlsVersion = handshake.tlsVersion()
    val cipherSuite: CipherSuite = handshake.cipherSuite()
    val peerCertificates: List<Certificate> = handshake.peerCertificates()