Merge https://gitlab.com/Eswcvlad/Simple-Web-Server

     * @param verify_file        If non-empty, use this certificate authority file to perform verification of client's certificate and hostname according to RFC 2818.

     */

    Server(const std::string &certification_file, const std::string &private_key_file, const std::string &verify_file = std::string())

        : ServerBase<HTTPS>::ServerBase(443), context(asio::ssl::context::tlsv12) {

        : ServerBase<HTTPS>::ServerBase(443),

          // This includes TLS as well

          context(asio::ssl::context::sslv23_server) {

      // Disabling SSL, TLS 1.0 and 1.1 (see RFC 8996)

      context.set_options(asio::ssl::context::no_sslv2);

      context.set_options(asio::ssl::context::no_sslv3);

      context.set_options(asio::ssl::context::no_tlsv1);

      context.set_options(asio::ssl::context::no_tlsv1_1);

      context.use_certificate_chain_file(certification_file);

      context.use_private_key_file(private_key_file, asio::ssl::context::pem);