@Throws(IOException::class)
  override fun createSocket(): Socket {
    val socket = delegate.createSocket()
    return configureSocket(socket)
  }

  @Throws(IOException::class)
  override fun createSocket(
    host: String,
    port: Int,
  ): Socket {
    val socket = delegate.createSocket(host, port)
    return configureSocket(socket)
  }

  @Throws(IOException::class)

    val tlsSpec =
      ConnectionSpec.Builder(true)
        .tlsVersions(TlsVersion.TLS_1_2)
        .supportsTlsExtensions(false)
        .build()
    val socket = SSLSocketFactory.getDefault().createSocket() as SSLSocket
    socket.enabledCipherSuites =
      arrayOf(
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256.javaName,
        CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA.javaName,
      )

      throw e;
    }
    return result;
  }

  @Override public Socket createSocket(
      String host, int port, InetAddress localHost, int localPort) throws IOException {
    return createSocket(host, port);
  }

  @Override public Socket createSocket(InetAddress host, int port) throws IOException {
    Socket result = createSocket();

    try {
      result.connect(new InetSocketAddress(host, port));

        String host, int port, InetAddress localHost, int localPort) throws IOException {
      return configureSocket((SSLSocket) delegate.createSocket(host, port, localHost, localPort));
    }

    @Override public Socket createSocket(InetAddress host, int port) throws IOException {
      return configureSocket((SSLSocket) delegate.createSocket(host, port));
    }

    @Override public Socket createSocket(

  @Throws(IOException::class)
  override fun createSocket(): SSLSocket {
    val sslSocket = delegate.createSocket() as SSLSocket
    return configureSocket(sslSocket)
  }

  @Throws(IOException::class)
  override fun createSocket(
    host: String,
    port: Int,
  ): SSLSocket {
    val sslSocket = delegate.createSocket(host, port) as SSLSocket
    return configureSocket(sslSocket)
  }

import javax.net.SocketFactory

class ChannelSocketFactory : SocketFactory() {
  override fun createSocket(): Socket {
    return SocketChannel.open().socket()
  }

  override fun createSocket(
    host: String,
    port: Int,
  ): Socket = TODO("Not yet implemented")

  override fun createSocket(
    host: String,
    port: Int,
    localHost: InetAddress,
    localPort: Int,

    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

    }
  }

  @ParameterizedTest
  @MethodSource("data")
  fun testMatchesSupportedSocket(adapter: SocketAdapter) {
    val socketFactory = context.socketFactory

    val sslSocket = socketFactory.createSocket() as SSLSocket
    assertTrue(adapter.matchesSocket(sslSocket))

    adapter.configureTlsExtensions(sslSocket, null, listOf(HTTP_2, HTTP_1_1))
    // not connected
    assertNull(adapter.getSelectedProtocol(sslSocket))

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

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

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

  )
}

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) },