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

[Asterisk Team (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-27795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=242956#comment-242956 ] 

Asterisk Team commented on ASTERISK-27795:
------------------------------------------

The module you are reporting the issue against is no longer supported as a core module but your issue is in the queue. Your patience is appreciated as a community developer may work the issue when time and resources become available.

Asterisk is an open source project and community members work the issues on a voluntary basis. You are welcome to develop your own patches and submit them to the project.[1]

If you are not a programmer and you are in a hurry to see a patch provided then you might try rallying support on the Asterisk users mailing list or forums.[2] Another alternative is offering a bug bounty on the asterisk-dev mailing list.[3] Often a little incentive can go a long way.

[1]: https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process
[2]: http://www.asterisk.org/community/discuss
[3]: https://wiki.asterisk.org/wiki/display/AST/Asterisk+Bug+Bounties

> 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
>
> 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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