        ~Connection()
        {
            res.complete_request_handler_ = nullptr;
            cancel_deadline_timer();
#ifdef CROW_ENABLE_DEBUG
            connectionCount--;
            CROW_LOG_DEBUG << "Connection (" << this << ") freed, total: " << connectionCount;
#endif
        }
        ~Connection()
        {
            res.complete_request_handler_ = nullptr;
            cancel_deadline_timer();
#ifdef CROW_ENABLE_DEBUG
            connectionCount--;
            CROW_LOG_DEBUG << "Connection (" << this << ") freed, total: " << connectionCount;
#endif
        }