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

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

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

    client =
      client
        .newBuilder()

    val supportsTlsExtensions: Boolean = connectionSpec.supportsTlsExtensions
    val compatible: Boolean =
      connectionSpec.isCompatible(
        localhost().sslSocketFactory().createSocket() as SSLSocket,
      )
  }

  @Test
  fun connectionSpecBuilder() {
    var builder = ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
    builder = builder.allEnabledCipherSuites()

              socket = MockWebServerSocket(raw),
            )
            processHandshakeFailure(raw)
            return
          }
          val sslSocket =
            sslSocketFactory!!.createSocket(
              raw,
              raw.inetAddress.hostAddress,
              raw.port,
              true,
            ) as SSLSocket
          sslSocket.useClientMode = false

    val uselessSocketFactory: SocketFactory =
      object : SocketFactory() {
        override fun createSocket(): Socket = throw IllegalArgumentException("useless")

        override fun createSocket(
          host: InetAddress,
          port: Int,
        ): Socket? = null

        override fun createSocket(
          address: InetAddress,
          port: Int,
          localAddress: InetAddress,

    val onConnect: Socket.(timeout: Int) -> Unit = {},
    val onRead: Socket.() -> Unit = {},
    val onWrite: Socket.() -> Unit = {},
  ) : DelegatingSocketFactory(getDefault()) {
    override fun createSocket(): Socket {
      return object : Socket() {
        override fun connect(
          endpoint: SocketAddress?,
          timeout: Int,
        ) {
          onConnect(timeout)

        }

        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",
        )
      }

        }

        this.proxyAuthenticator = proxyAuthenticator
      }

    /**
     * Sets the socket factory used to create connections. OkHttp only uses the parameterless
     * [SocketFactory.createSocket] method to create unconnected sockets. Overriding this method,
     * e. g., allows the socket to be bound to a specific local address.
     *