hostname: String?,
    protocols: List<Protocol>,
  ) {
    getDelegate(sslSocket)?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
    return getDelegate(sslSocket)?.getSelectedProtocol(sslSocket)
  }

  @Synchronized private fun getDelegate(sslSocket: SSLSocket): SocketAdapter? {
    if (this.delegate == null && socketAdapterFactory.matchesSocket(sslSocket)) {

    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    if (sslSocket is org.openjsse.javax.net.ssl.SSLSocket) {
      when (val protocol = sslSocket.applicationProtocol) {
        // Handles both un-configured and none selected.
        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {

      ?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    // No TLS extensions if the socket class is custom.
    socketAdapters.find { it.matchesSocket(sslSocket) }?.getSelectedProtocol(sslSocket)

  override fun getStackTraceForCloseable(closer: String): Any? {
    return if (Build.VERSION.SDK_INT >= 30) {

  fun matchesSocketFactory(sslSocketFactory: SSLSocketFactory): Boolean = false

  fun configureTlsExtensions(
    sslSocket: SSLSocket,
    hostname: String?,
    protocols: List<Protocol>,
  )

  fun getSelectedProtocol(sslSocket: SSLSocket): String?

    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    if (sslSocket is BCSSLSocket) {
      when (val protocol = (sslSocket as BCSSLSocket).applicationProtocol) {
        // Handles both un-configured and none selected.
        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {

    assertTrue(adapter.matchesSocket(sslSocket))

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

  @ParameterizedTest
  @MethodSource("data")
  fun testMatchesSupportedAndroidSocketFactory(adapter: SocketAdapter) {
    assumeTrue(adapter is StandardAndroidSocketAdapter)

    } else {
      super.configureTlsExtensions(sslSocket, hostname, protocols)
    }
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    if (Conscrypt.isConscrypt(sslSocket)) {
      Conscrypt.getApplicationProtocol(sslSocket)
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  override fun newSslSocketFactory(trustManager: X509TrustManager): SSLSocketFactory {

      ?.configureTlsExtensions(sslSocket, hostname, protocols)
  }

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    // No TLS extensions if the socket class is custom.
    socketAdapters.find { it.matchesSocket(sslSocket) }?.getSelectedProtocol(sslSocket)

  override fun isCleartextTrafficPermitted(hostname: String): Boolean =
    when {

    while (true) {
      var socket: Socket? = null
      try {
        socket = serverSocket.accept()
        val sslSocket = doSsl(socket)
        val protocolString = Platform.get().getSelectedProtocol(sslSocket)
        val protocol = if (protocolString != null) get(protocolString) else null
        if (protocol != Protocol.HTTP_2) {
          throw ProtocolException("Protocol $protocol unsupported")
        }

  override fun matchesSocket(sslSocket: SSLSocket): Boolean = sslSocket is BCSSLSocket

  override fun isSupported(): Boolean = BouncyCastlePlatform.isSupported

  override fun getSelectedProtocol(sslSocket: SSLSocket): String? {
    val s = sslSocket as BCSSLSocket

    return when (val protocol = s.applicationProtocol) {
      null, "" -> null
      else -> protocol
    }
  }