我们计划使用MQTT来提供我们的服务器消息到Android设备 我们决定去与开源服务器mosquitto。

We are planning to use MQTT to deliver messages from our server to an android devices we decided to go with the open source server mosquitto.

在大多数情况下，这已经足够了。（发布/订阅） 但我们有一个情况下，客户端需要发送的参数，并得到来自服务器的响应。 我知道直接的办法就是去与HTTP（Servlet的举例）。 但我们可以做到这一点使用MQTT因为这将意味着更低的带宽消耗用户？

in most of the cases this is enough.(Publishing / subscribing ) but we have a cases where the client need to send parameters and get response from the server. i know the direct approach is to go with Http (Servlets for example) . but can we achieve this using MQTT since it would mean lower bandwidth consumption to the user ?

推荐答案

是的，它只是需要仔细设计你的话题结构。作为一个非常简单的例子，你可以发布到控制/＆LT;客户端ID＆GT; /请求和订阅控制/＆LT;客户端ID＆GT; /响应

Yes, it just requires careful design of your topic structure. As a very simple example, you could publish to control/<client id>/request and subscribe to control/<client id>/response