From: Carsten Bock <carsten@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@lists.sip-router.org>

Reply-To: "Kamailio \(SER\) - Users Mailing List" <sr-users@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@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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