[SR-Users] Late offer ACKs not passing through branch_route

Enrico Bandiera enrico.bandiera at cloud.timenet.it
Mon Jul 1 08:37:08 CEST 2019


Hi Daniel, thank you.
I will add a special case for ACKs in the request route.

Cheers,
Enrico.

Il giorno mar 25 giu 2019 alle ore 16:46 Daniel-Constantin Mierla <
daniel at kamailio.org> ha scritto:

> Hello,
>
> the ACK doesn't get through the branch_route block because it is forwarded
> in stateless mode. The ACK doesn't have a reply, therefore is not
> transaction state to be kept for it. You have to apply all the rules you
> want for the ACK inside the request_route logic. If there is a
> retransmission of the ACK, again it is not detected, so it will just run
> again through the same rules in request_route. This is of course for the
> ACK following the 200ok.
>
> Cheers,
> Daniel
>
> June 25, 2019 1:42 PM, "Bandiera, Enrico" <
> enrico.bandiera at cloud.timenet.it
> <%22Bandiera,%20Enrico%22%20%3Cenrico.bandiera at cloud.timenet.it%3E>>
> wrote:
>
> Hi, I'm encountering an issue when relaying late offer ACKs, before
> relaying I set the branch_route with t_on_branch() but kamailio never
> enters that route after calling t_relay
> I'm keeping the rtpengine module calls inside branch_routes to avoid
> issues when re-routing in failure routes
> I suppose it's something related to ACK packets but I'm not sure what the
> issue is.
> Any hints?
> Thanks,
> Enrico.
>
>
>
> --
> Daniel-Constantin Mierla
> www.kamailio.org -- www.asipto.com
> _______________________________________________
> Kamailio (SER) - Users Mailing List
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>
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