        void handle_url()
        {
            routing_handle_result_ = handler_->handle_initial(req_, res);
            // if no route is found for the request method, return the response without parsing or processing anything further.
            if (!routing_handle_result_->rule_index)
            {
                parser_.done();
                complete_request();
            }
        }
        void handle_url()
        {
            routing_handle_result_ = handler_->handle_initial(req_, res);
             
            if (!routing_handle_result_->rule_index)
            {
                parser_.done();
                complete_request();
            }
        }