[asterisk-bugs] [JIRA] (ASTERISK-27795) chan_sip: one way / no audio with srtp

[Joshua Colp (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-27795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on ASTERISK-27795 started by Joshua Colp.

> chan_sip: one way / no audio with srtp
> --------------------------------------
>
>                 Key: ASTERISK-27795
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27795
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/SRTP
>    Affects Versions: 15.3.0
>            Reporter: Florian Kaiser
>            Assignee: Joshua Colp
>
> Same behavior as described in ASTERISK-27604: 
> One-way audio between srtp and non-srtp clients.
> No audio between two srtp clients.
> No problem with just one client (e.g. echotest).
> Analysis of tcpdump (available on request) reveals that for the srtp stream Asterisk -> client, the wrong - local - encryption key is being used.
> That explains the behaviour: Client can't decode incoming stream -> no audio.
> Git bisect narrows it down to commit 065c300 / ASTERISK-27118.



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