COSM MQTT subscribe does not receive update status whenever the feed or datastream is updated

Question

I'm testing the MQTT with COSM.

To publish data, I use below command:

$ mosquitto_pub -h api.cosm.com -u <COSM_API_KEY> -t /v2/feeds/96951.csv -m "temp_sensor,21"

To subscribe, I use below command:

$ mosquitto_sub -h api.cosm.com -u <COSM_API_KEY> -t /v2/feeds/96951/datastreams/temp_sensor.csv

I expect in subscribe side, it should get the update status whenever the feed or datastream is updated. But I only get the current state of the device immediately upon subscription.

Did I miss anything?

Answer 1

我认为这是固定在Cosm端，所以你上面给出的mosquitto_sub示例现在正在为我工​​作。