MqttServerOnClientSubscribe 事件 |
订阅主题事件，当客户端订阅主题时触发，返回 0 标识订阅通过，返回 其他值标识订阅失败
Subscribe to the topic event. This triggers when the client subscribes to the topic. Returns 0 to indicate successful subscription, and returns other values to indicate subscription failure.
Subscribe to the topic event. This triggers when the client subscribes to the topic. Returns 0 to indicate successful subscription, and returns other values to indicate subscription failure.
命名空间： HslCommunication.MQTT
程序集： HslCommunication (在 HslCommunication.dll 中) 版本：12.9.1.0 (12.9.1.0)
语法参见