[asterisk-bugs] [JIRA] (ASTERISK-28659) Video conferences over WebRTC do not work anymore if the caller offers only audio

[Asterisk Team (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=249053#comment-249053 ] 

Asterisk Team commented on ASTERISK-28659:
------------------------------------------

Thanks for creating a report! The issue has entered the triage process. That means the issue will wait in this status until a Bug Marshal has an opportunity to review the issue. Once the issue has been reviewed you will receive comments regarding the next steps towards resolution.

A good first step is for you to review the [Asterisk Issue Guidelines|https://wiki.asterisk.org/wiki/display/AST/Asterisk+Issue+Guidelines] if you haven't already. The guidelines detail what is expected from an Asterisk issue report.

Then, if you are submitting a patch, please review the [Patch Contribution Process|https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process].

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> Video conferences over WebRTC do not work anymore if the caller offers only audio
> ---------------------------------------------------------------------------------
>
>                 Key: ASTERISK-28659
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28659
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_session
>    Affects Versions: 16.7.0
>            Reporter: nappsoft
>              Labels: webrtc
>
> Our WebRTC implementation for video conferences (based on sip.js) was working as expected with Asterisk 16.6.2. We offer 3 modes: audio only (as sender, of course the sender can receive video streams...), audio+video and audio+screen.
> With Asterisk 16.7.0-rc1 the implementation stopped working if the sender only offers audio but no video stream. The only thing that differs in the SDP sent by Asterisk is the following line:
> a=group:BUNDLE 0
> which changed to:
> a=group:BUNDLE 0 video-1
> I was able to track down the changed behavior to the following commit: https://github.com/asterisk/asterisk/commit/6f0a69c51a25fa63405b991d7c20baa229eef96a
> res_pjsip_session: initialize pending's topology to endpoint's 



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