[SR-Users] Manipulate sip header on an in-dialog negative reply

[Olli Attila]

Hello,

The onreply route removal does not seem to work here. Am i missing something? :

Call is routed via dispatch module:

route[DISPATCH] {
                t_on_reply("MANAGE_REPLY");
                t_on_failure("RTF_DISPATCH");
                route(RELAY);
                exit;
}

onreply_route[MANAGE_REPLY] {
        remove_hf_re("^X-");
        remove_hf("P-Charging-Vector");
}

route[RELAY] {

        if (!t_relay()) {
                sl_reply_error();
        }
        exit;
}


--Olli

to 20. jouluk. 2018 klo 14.31 Daniel-Constantin Mierla
(miconda at gmail.com) kirjoitti:
>
> Hello,
>
> in the failure route you have the request under processing, not the
> response.
>
> You have to use an onreply_route[x] for that transaction and do there
> remove_hf()
>
> Cheers,
> Daniel
>
> On 20.12.18 11:57, Olli Attila wrote:
> > Hello,
> >
> > Any ideas about this header manipulation?
> >
> > Cheers,
> > Olli
> >
> > pe 14. jouluk. 2018 klo 12.31 Olli Attila (attiolli at gmail.com) kirjoitti:
> >> Hello,
> >>
> >> We have a call case where our softswitch replies to in-dialog
> >> re-invite with "SIP 491 Request pending". This happens when a customer
> >> sip device is trying to re-invite the session too fast even though the
> >> softswitch is still processing the earlier request. Kamailio operates
> >> between this customer device and the softswitch.
> >>
> >> The softswitch is adding a P-Charging-Vector header to this SIP 491
> >> reply which we want to drop (remove_hf...)  from the reply when we
> >> route the SIP 491 message  back to the customers device.
> >>
> >> I tried to drop this inside in-dialog failure route but it seems that
> >> Kamailio forwards the orginal 491 message statelessly to customer and
> >> the header still extists there eventhough failure route has deleted
> >> it. I guess this modification should be done in a sateful manner for
> >> Kamailio to actually write the changes to the outgoing reply towards
> >> the customer device.
> >>
> >> Any suggestions how the 491 reply could be edited and then forwarded
> >> onwards to the customer device?
> >>
> >> Cheers,
> >> --Olli
> >
> >
> --
> Daniel-Constantin Mierla -- www.asipto.com
> www.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
> Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com
>


-- 
"Logic is the art of going wrong with confidence."