Changing permissions of self-joined users during a call has no (lasting) effect

[danxuliu]

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If the permissions of a participant are changed when that participant is in a call currently that participant will force reconnect. When the HPB is not used the participant just leaves the call and joins it again, but when the HPB is used the participant also leaves the conversation and joins it again. When self joined users leave a conversation their attendee is removed, so any custom permission previously set is lost. Therefore, when the HPB is used, when a self joined user is force reconnected during a call due to having received custom permissions those permissions are immediately lost and the self joined user will be back to the default permissions.

This will be implicitly fixed by getting rid of forced reconnections when permissions change (#6896 and #6934). However, note that the fix only affects changing the permissions during a call; the self joined user will anyway lose the custom permissions when manually joining the conversation again.

How to test

• Setup the HPB
• Create a public conversation
• Revoke audio and video permissions by default
• In a private window, log in as another user
• Join the conversation
• Start a call
• In the original window, join the call
• Grant all permissions to the self joined user

Expected result

The self joined user is able to enable audio and video

Actual result

After some seconds the self joined user will have the default permissions again and she will not be able to enable audio and video. Moreover, when the self joined user then tries to leave the call it will fail, and the browser console will show the error Participant not found for conversation XXX.

[nickvergessen]

I guess when permissions are changed (similarly to promotion) the user should be turned into a regular user?