Dynamically Provision iot Device With Azure dps - Unexpected Failure. Python sdk

bruthaStopThat 25

I am dynamically provision an iot device using the python azure-iot-device python package. I am using v2 and not 3.0.0b2. I can't even get that to compile. Here's my python code trying to provision a device:

import asyncio
import os

from azure.iot.device.aio import (
    ProvisioningDeviceClient,
)
from dotenv import load_dotenv
load_dotenv(dotenv_path=".env")

CONNECTION_STRING = os.getenv("IOTHUB_DEVICE_CONNECTION_STRING")
ID_SCOPE = os.getenv("PROVISIONING_IDSCOPE")
REGISTRATION_ID = os.getenv("PROVISIONING_REGISTRATION_ID")
SYMMETRIC_KEY = os.getenv("PROVISIONING_SYMMETRIC_KEY")
PROVISIONING_HOST = os.getenv("PROVISIONING_HOST")
# PROVISIONING_SHARED_ACCESS_KEY = os.getenv("PROVISIONING_SHARED_ACCESS_KEY")

async def main():
    print("Starting multi-feature sample")
    provisioning_device_client = ProvisioningDeviceClient.create_from_symmetric_key(
            provisioning_host=PROVISIONING_HOST,
            registration_id=REGISTRATION_ID,
            id_scope=ID_SCOPE,
            symmetric_key=SYMMETRIC_KEY,
        )
    provisioning_device_client.provisioning_payload = "

bruthaStopThat 25 Reputation points

2023-07-14T12:26:53.9366667+00:00

Also the question asking experience here is horrendous. Takes forever for the text you're typing to render on the screen and a lot of my question keeps getting omitted no matter how many times I try to type the correct thing.
Anyways, here's what the opening paragraph of my question actually is since i can't get it in the actual post for some reason:

I am dynamically provision an iot device using the python azure-iot-device python package. I am using v2 and not 3.0.0b2. I can't even get that to compile. Here's my python code trying to provision a device:
Sander van de Velde | MVP 32,556 Reputation points MVP

2023-07-14T14:29:07.3866667+00:00

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1 answer

Sander van de Velde | MVP 32,556 Reputation points MVP

2023-07-16T21:51:24.4933333+00:00

Hello @

I assume you first try an individual enrollment.

How do you get that device-related 'CONNECTION_STRING'?

It should be returned by the DPS client after provisioning the device registration.

That device connection string returns the linked IoT Hub, the device ID, and the connection string.

Here is an example written in C#.

Here is an example written in Python. See also this blog post.

Notice the DPS will register the device in the selected IoT Hub.

First, check if the DPS enrollment is successful (it shows the state).

Then, check if the device is registered in the IoT Hub.

Please, take some time to learn about the provisioning process using this learning module.

If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.
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Sander van de Velde | MVP 32,556 Reputation points MVP

2023-07-14T14:32:05.7966667+00:00

Can you provision the same device and information by hand in the Azure portal (eg. the same registration id, payload)?

bruthaStopThat 25 Reputation points

2023-07-16T20:33:16.0366667+00:00

Sorry I did not get the notification for your reply. I will be checking frequently now. But I tried manually adding the device to the Device provisioning Service. The DPS is connected to an iot hub.

And then I try sending a message from my device to the iot hub using the connection string for the 'device' access policy like so but it always fails:

try: print("Connecting to IoT Hub...") client = IoTHubDeviceClient.create_from_connection_string(CONNECTION_STRING) print("Connected to IoT Hub") await asyncio.gather( send_telemetry(client), receive_c2d_messages(client), ) except Exception: # Connection has been lost. Reconnect on next pass of loop. print("Dropped connection. Reconnecting in 1 second") await asyncio.sleep(1)

Is there something I am not doing right? I skipped the device provisioning step this time and just tried to connect and send a message but I still can't get it to work.

bruthaStopThat 25 Reputation points

2023-07-16T23:01:23.4366667+00:00

I got the connection string by going to iot-hub resource in azure, then clicking shared access policies, then clicking the device policy. Then I copied the primary connection string.

Thanks for the example. It is good reference, but what I am saying is that my code is stuck here at the registration part. It does not register. I always get "Unknown error":

provisioning_device_client = ProvisioningDeviceClient.create_from_symmetric_key( provisioning_host=provisioning_host, registration_id=registration_id, id_scope=id_scope, symmetric_key=symmetric_key, ) registration_result = provisioning_device_client.register()

At this point. There is no need for any connection string so I am primarily wondering what the issue is here.

However, I tried what you said as well and manually provisioned the device in azure on an individual enrollment. Now in my code, I commented out the provisioning phase and just tried doing some basic telemetry which I described in my previous comment and it still does not work.

I will look at the blog post you sent in the meantime

bruthaStopThat 25 Reputation points

2023-07-17T00:06:49.59+00:00

Okay I followed the blog and after I manually enrolled the device. I can connect properly, but this is the new error I receive while sending telemetry: "Error in the IoTHub client due to TLS exchanges".

The blog does not speak on how to provision the device dynamically but it at least showed me the correct connection string to use whenever I figure that out. Thanks for that. Although I am not sure what the TLS error implies

Sander van de Velde | MVP 32,556 Reputation points MVP

2023-07-17T06:24:31.53+00:00

It's hard to debug your solution but the TLS could be related to the upcoming TLS cert change.

bruthaStopThat 25 Reputation points

2023-07-17T10:57:54.38+00:00

Thanks for the help so far. I have reached out to support and will post an answer here if they are helpful.
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Dynamically Provision iot Device With Azure dps - Unexpected Failure. Python sdk

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