WebRTC Remote Access fails with 400 Bad Request — XSRF-TOKEN=undefined in request

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Hi everyone,

I’m currently testing the WebRTC Webcam Plugin ( GitHub - Cumulocity-IoT/cumulocity-webrtc-webcam-plugin: A plugin that allows to access the webcam of cumulocity devices via webrtc ) in the Device Management app.

When I try to open a device webcam session, the WebSocket connection to the Remote Access service fails with a 400 Bad Request.

Here’s the relevant request:

GET wss://our-tenant-url/service/remoteaccess/client/4711676997/configurations/1?token=Basic dXXXXXX...&XSRF-TOKEN=undefined
Status: 400 Bad Request

I noticed that the query parameter contains XSRF-TOKEN=undefined, and I’m wondering if that might be the reason.

It seems like the front-end (or plugin) is appending the XSRF token automatically, but the value is not set — literally “undefined”.

My questions:

  • Is this caused by a misconfiguration on my tenant or device setup, or

  • Is this a bug in the Remote Access plugin / WebRTC integration that incorrectly appends the token?

Additional info:

  • Browser: Firefox 144.0 on macOS

  • The ICE/STUN phase completes successfully — this only happens at the WebSocket connect stage.

Any insights would be greatly appreciated!

Thanks in advance.
Benjamin

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Hi @benjamin.ruoff,

This might be an issue with the WebRTC plugin.. As a workaround could you give it a try by configuring your tenant for OAuth (OAI-Secure) instead of Basic auth? Basic settings - Cumulocity documentation

Regards,
Tristan

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I’ve also added a fix that should be available soon in version 3.0.1 of the plugin.

Would be great if you could provide some feedback if it works for you now with basic auth.

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Hi Tristan,

yep you were right, it’s because of the basic auth. I just switched to OAuth (OAI-Secure) an now it works like a charm.

As soon as your fix is available I will test it again, with basic auth.

Thank for your fast feedback.

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5

Hi Tristan,

just to let you know, we tested the fix and it works like a charm

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