MqttSyncClientReadRpcAsync 方法

读取MQTT服务器注册的RPC接口，忽略返回的Topic数据，直接将结果转换为泛型对象，如果JSON转换失败，将返回错误，参数传递主题和数据负载， 数据负载示例：new { address = "", length = 0 } 本质是一个匿名对象。
Read the RPC interface registered by the MQTT server, ignore the returned Topic data, and directly convert the result into a generic object. If the JSON conversion fails, an error will be returned. The parameter passes the topic and the data payload. The data payload example: new { address = "", length = 0 } is essentially an anonymous object.

读取MQTT服务器注册的RPC接口，忽略返回的Topic数据，直接将结果转换为泛型对象，如果JSON转换失败，将返回错误，参数传递主题和数据负载， 数据负载示例："{\"address\": \"100\",\"length\": 10}" 本质是一个字符串。
Read the RPC interface registered by the MQTT server, ignore the returned Topic data, and directly convert the result into a generic object. If the JSON conversion fails, an error will be returned. The parameter passes the topic and the data payload. The data payload example: "{\"address\ ": \"100\",\"length\": 10}" is essentially a string.