Subscribe to a device telemetry

[jfparrado]

Component

• Generic

Description
I connect to the web socket "wss://demo.thingsboard.io/api/ws" via postman and then I authenticate with this message "{
"authCmd": {
"cmdId": 0,
"token": "{{tbtoken}}"
}
}
"
but when i try to subscribe to a device`s telemetry using this message "{
"tsSubCmds":
[
{
"entityType":"DEVICE",
"entityId":"06b63430-fd96-11ee-ad61-f7ea2501b433",
"cmdId":1
}
],
"historyCmds":[],
"attrSubCmds":[]
}"
i am getting this response "{
"subscriptionId": 1,
"errorCode": 2,
"errorMsg": "Failed to parse the payload",
"data": null,
"latestValues": {}
}"
how can i susbscribe to the telemetry of that device in the right way?

[devaskim]

how can i susbscribe to the telemetry of that device in the right way?

To debug you can create dashboard with single widget, add your device as alias and after running the dashboard look at browser console in Network/WS tab. There you will find appropriate data format.

[devaskim]

Also you can check thingsboard-telemetry-stream from my Thingsboard collection.