[SR-Users] rtpengine rewrite sdp for second time

[Virmantas Variakojis]

Hi Carsten,

Thanks for your reply!

How can I call msg_apply_changes() in right way? If I call
msg_apply_changes() for example in route[RELAY] i get error:
ERROR: textopsx [textopsx.c:157]: msg_apply_changes_f(): invalid usage -
not in request route

if I do everything as you suggested in onreply_route (after I get for
example SIP 500 message) it doesn't work and my SDP remains unchanged.

Thanks!



>
> *From: *Carsten Bock <carsten at ng-voice.com>
> *Subject: **Re: [SR-Users] rtpengine rewrite sdp for second time*
> *Date: *17 Aug 2015 09:49:12 EEST
> *To: *"Kamailio (SER) - Users Mailing List" <sr-users at lists.sip-router.org
> >
> *Reply-To: *"Kamailio \(SER\) - Users Mailing List" <
> sr-users at lists.sip-router.org>
>
> Hi Virmantas,
>
> you could try to one or a combination of the following:
> - explicitly delete the first session by calling rtpengine_manage() in
> the failure route
> - call msg_apply_changes() from Textops before calling
> rtpengine_manage() the second time (so the already made changes are
> applied and the message gets reparsed)
>
> Thanks,
> Carsten
>
> 2015-08-16 20:13 GMT+02:00 Virmantas Variakojis
> <virmantas.variakojis at gmail.com>:
>
> Hi,
>
> I have a situation like this:
> I have kamailio with 3 NIC's. I'm sending INVITE to first provider over
> NIC1. Before sending INVITE I use rtpengine_manage to rewrite sdp body with
> IP that is on NIC1:
> rtpengine_manage ("replace-origin replace-session-connection
> direction=intvlan direction=prov1 ICE=remove");
>
> If first provider fails i want to send INVITE for the same call to second
> provider. But if i use like this:
> rtpengine_manage ("replace-origin replace-session-connection
> direction=intvlan direction=prov2 ICE=remove");
> or (because ip of prov1 is allready set):
> rtpengine_manage ("replace-origin replace-session-connection
> direction=prov1
> direction=prov2 ICE=remove");
> rtpengine ignores my changes as said in documentation: "The direction must
> only be specified in for initial SDP offer; answers or subsequent offers
> can
> omit this option."
>
> and if I try to set ip like this:
> rtpengine_manage ("replace-origin replace-session-connection
> media-address=X.X.X.X ICE=remove");
> SDP body is doubled: it leaves old values and adds the new one.
>
> What i'm doing wrong or how can I rewrite SDP for second time? Thanks in
> advance for answer!
>
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>
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>
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