Method close

demo_example/smtp/smtp_client.cpp:330–340

    }

    void close() {
        asio::error_code ignore_ec;
        if constexpr (IS_SSL) {
#ifdef ENABLE_SSL
            ssl_socket_->shutdown(ignore_ec);
#endif
        }

        socket_.shutdown(asio::ip::tcp::socket::shutdown_both, ignore_ec);
        socket_.close(ignore_ec);
    }

private:
    std::string get_separator() {