[asterisk-bugs] [JIRA] (ASTERISK-25867) [patch] Video delay on app_echo

[Joshua Colp (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-25867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua Colp updated ASTERISK-25867:
-----------------------------------

    Target Release Version/s: 13.9.0

> [patch] Video delay on app_echo
> -------------------------------
>
>                 Key: ASTERISK-25867
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25867
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_echo
>    Affects Versions: 13.7.2
>         Environment: SIPML5 WebRTC client in Firefox or Chrome browser.
>            Reporter: Jacek Konieczny
>      Target Release: 13.9.0
>
>
> After patching around broken DTLS SRTP for RTCP (ASTERISK-25642) app_echo, started after an audio prompt is played, would still not work correctly. Video would show only after a few minutes, when a new full reference frame is sent.
> This is because video frames are forwarded only after all DTLS handshakes are finished and app_echo is started. Any reference frame received earlier would be lost and the caller is not informed about it in any way.
> Chrome would send FIR requests immediately, but those would not be forwarded by app_echo. Other clients might not even send the FIR request and expect the reference frame to come on time.
> I have made a patch which fixes this behaviour in both cases.



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