在MQTT中，我可以向单个客户端发送消息吗？ 还是仅在主题中？
[英]In MQTT, can i send a message to single client? Or only in a topic?
问题描述
I have an application using MQTT, with clients connected on various topics, however, I have the need to send a message only to a client, not to an entire topic. 
我有一个使用MQTT的应用程序，客户端连接了各种主题，但是，我只需要向客户端发送消息，而不是整个主题。 Is that possible? 那可能吗？
1 个解决方案
解决方案1
0 已采纳 2018-03-01 19:18:29
No, MQTT is a pub/sub protocol, messages are published on topics and there may be 0 to many subscribers to that topic 不，MQTT是一种发布/订阅协议，消息是在主题上发布的，该主题的许多订阅者可能为0
The closest you can do is pick a topic that you know only the client you want will be subscribed to. 您能做的最接近的事情是选择一个仅知道您要订阅的客户端的主题。
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