Community-edition: Microsoft Teams: Screen Share not working

[DennisGaida]

Steps to reproduce

1. Join a meeting in Microsoft Teams
2. Try to share your screen
3. The "Share screen" button does nothing

Expected behavior

In a regular browser the "Share screen" button opens a popup where I can select what I want so share, see the following screenshot:

Actual behavior

The share screen / application button does not open a popup nor does it share the screen or a window.

ENVIRONMENT

Rambox: v0.7.5
OS: Win10
Arch: x64

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[trulex]

Same on Linux.

[fvulich]

In order to get this work we need a chrome's extension. We are investigating on how to make it work.

[DennisGaida]

Out of interest - is this because of running within Electron? I can't make out any particular Microsoft Teams extension for this to work or maybe it is hidden?

[fvulich]

I checked again, and they seem to have changed the way that they share screen, but it still doesn't work. We're investigating it... Please, share with us any information that seems relevant for you.

[joschi127]

Maybe interesting to know: Teams Screen Sharing also does not work for Rambox Pro or for Franz.

But it seems to be working with https://github.com/IsmaelMartinez/teams-for-linux which is also Electron based. (sorry posted the wrong link here before... now edited this comment and corrected the link)

(I first though it might be related to the user agent. But the unofficial teams-for-linux client is using Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) teams-for-linux/1.0.0 Chrome/69.0.3497.128 Electron/4.2.8 Safari/537.36 as a user agent and at least when setting the same for Rambox Pro it doesn't help. Still not working.)

[joschi127]

Maybe this is doing the trick: https://github.com/IsmaelMartinez/teams-for-linux/blob/736c3cf475b716951124f9f1431202f57e07c6f1/app/browser/index.js#L17

[DennisGaida]

Good find @joschi127 ! https://github.com/IsmaelMartinez/teams-for-linux/tree/master/app/browser/desktopShare this really seems to do the trick with a custom HTML popup for selecting the screen capture.

[rauldipeas]

No service share the screen in Rambox, i’ve already tested several.

[joschi127]

@DennisGaida Maybe also this part? https://github.com/IsmaelMartinez/teams-for-linux/blob/736c3cf475b716951124f9f1431202f57e07c6f1/app/browser/index.js#L38

[joschi127]

Sneak preview: It is possible.
Managed to get a (currently still very hacky) version running:

Will try to clean this up and open a pull request. (Some parts of the code might be useful for all apps with screen sharing, others are MS Teams specific... So I'm not sure yet how to get this right.)

All credits go to @IsmaelMartinez - the solution is based on the teams-for-linux implementation.

[IsmaelMartinez]

Please fire any questions around if you have to. Only realised now when you ping me. It works and being working for a good while so I am happy to help.

[saenzramiro]

Thank you @joschi127 and @IsmaelMartinez! We will wait your PR to add it to the next version.

[joschi127]

Stay tuned... I did not forget. But not much progress yet cleaning the code up, because if limited time :)

[coreyemmons]

Just wanted to comment and let you know that I appreciate the work going in to fixing this issue... it's the only thing keeping me from uninstalling the Teams desktop client. Looking forward to the fix!

[RauchF]

Do you know if the changes done here will also affect other meeting services like Google Meet? I've noticed screen sharing also does not work there currently. Or should I create a new issue for that? Really appreciate your work :)

[fbarbare]

Is this still being worked on? Is there a branch for it?
If you need a hand I might be able to help. That's the only thing I'm missing in Rambox

[joschi127]

@RauchF I think that based on the changes it should also be possible to make this work for other services. But at least parts of the implementation are MS Teams specific. So at least a bit more work will be needed to adapt it for other services.

@fbarbare Still on my list but did not find the time yet. It's not pushed to any branch yet.

Hope to find some time soon. Will try .... ;-)

[CelsoSantos]

Don't know if this is relevant here as well, but I notice Rambox doesn't ask for "Screen Recording" permissions on MacOS Catalina. However, I'm not sure if it the apps responsibility to ask for these permissions or if thats something that MacOS does by itself once an application tries to use such functionality.

[timofey]

Do we have any more updates on this?
Hey, @joschi127 I thought you could push what you already have so we all could help to move it further. Really appreciate your effort in this!

[avoidik]

hey @joschi127 mind to provide at least a code snippet on how to enable screen-sharing?

[joschi127]

Hey ... yes sorry that I still did not find time yet - will try to push at least the not cleaned up / hacky version!

[joschi127]

@timofey There you go - I at least pushed the experimental first hacky version to a fork.

You can find it on this branch:
https://github.com/joschi127/community-edition/tree/feature/screen-sharing

Changes are in this commit:
https://github.com/joschi127/community-edition/commit/420d4c203582059c11179867c664ffafbaf4f71c

It is still pretty much WORK IN PROGRESS.
Contains hacky debug output.
Only works when sharing screen for the first time, seems to have some bug when trying for a second time, app restart needed then.

Hope this helps - and let me know if anyone continues working on this!

All credits go to @IsmaelMartinez! - I've only copied from his code ;-)