[SR-Users] multihomed kamailio and sip-reinvites SRTP to RTP

Igor Olhovskiy igorolhovskiy at gmail.com
Thu Nov 7 11:59:43 CET 2019


Can you give an example of SIP trace where it's not working as expected?

Cause reading through config will not help much without setting up a lab.
On Nov 7 2019, at 11:27 am, Karsten Horsmann <khorsmann at gmail.com> wrote:
> Hello Mailinglist,
>
> i try to figure out, how to solve RE-INVITES and SRTP:
>
> i have an kamailio route names route[MEDIAPROXY] that i used to controll rtpengine in an private and public ip setup. This works fine for me now.
>
> It use the permission module and the adress table to figure out
> $var(mediagroup) = allow_address_group($Ri, 0); received from internal or external ip.
>
> The idea is from SBC-OS chamless stolen, so thanks for that.
>
> So fare so good. I adapted SRTP also to this.
> But on RE-INVITES it stops handling SRTP correctly to the encryption upstream.
> And i am sure, its my fault. But i have no clue how to detect that correctly.
>
> Any hints where i can read more about an correct handling on this?
>
> Here my main-config file / kamailio 5.3.x and rtpengine.
> https://gist.github.com/khorsmann/02bd98a628a190caee68fc3d876a3448
>
>
> --
> Mit freundlichen Grüßen
> *Karsten Horsmann*
>
>
>
>
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