return delegate!!.handshakeSession
  }

  override fun getApplicationProtocol(): String {
    return delegate!!.applicationProtocol
  }

  override fun getHandshakeApplicationProtocol(): String {
    return delegate!!.handshakeApplicationProtocol
  }

  override fun setHandshakeApplicationProtocolSelector(selector: BiFunction<SSLSocket, MutableList<String>, String>?) {