Azure IoT Device Provisioning Service over MQTT

Reference:

https://docs.microsoft.com/en-us/azure/iot-dps/quick-setup-auto-provision

https://docs.microsoft.com/en-us/azure/iot-dps/iot-dps-mqtt-support

https://docs.microsoft.com/en-us/rest/api/iot-dps/runtimeregistration/registerdevice#deviceregistration

Instructions

In order to use DPS via MQTT, the user, pw, subtopic, and pubtopic need to be used. The sub/pub is used as a pipeline to communicate with the server.

Set user:

+set,user:{idScope}/registrations/{registration_id}/api-version=2019-03-31

Where {idScope} is the DPS idScope such as: 0ne001524A7

sig-test-device-3

+set,user:0ne001524A7/registrations/sig-test-device-3/api-version=2019-03-31

Set password for shared access token

+set,pw:SharedAccessSignature sr={URL-encoded-resourceURI}&sig={signature-string}&se={expiry}&skn=registration

where resourceURI should be in the format {idScope}/registrations/{registration_id}. The policy name should be registration

OR for x.509 certificates load the keys onto the device and clear the pw variable

+set,pw:

Setup topics

+set,subtopic:$dps/registrations/res/#
+set,pubtopic:$dps/registrations/PUT/iotdps-register/?$rid={request_id}

Push Device Registration message.

Wait for message:

$dps/registrations/res/202/?$rid={request_id}&retry-after=x

Then poll (retry by the time is suggests) by waiting then pushing

+set,pubtopic:$dps/registrations/GET/iotdps-get-operationstatus/?$rid={request_id}&operationId={operationId}
+push,queue1,?

Wait for message:

$dps/registrations/res/200/?$rid={request_id}