[SR-Users] what could be the problem here? 500 Invalid routeset?

Carsten Bock carsten at ng-voice.com
Thu Nov 28 16:38:23 CET 2013

Hi Olle,

actually it's an extension, i wanted to do sooner or later. If
Kamailio is Dialog-Aware (e.g. dialog or dialog_ng is loaded),
Kamailio "knows" what the route-set should be and could check and
optionally enforce the route-set.

By the way: In the Record-Route of the "200 OK" it's "lr" and in the
"ACK" the Record-Route is "lr=on".
@Kelvin: You use only "record_route()" or do you have anything special
in this regards in your config?

Kind regards,

2013/11/28 Olle E. Johansson <oej at edvina.net>:
> On 28 Nov 2013, at 16:23, Alex Balashov <abalashov at evaristesys.com> wrote:
>> On 11/28/2013 10:22 AM, Kelvin Chua wrote:
>>> hi alex,
>>> is there a way for kamailio to force lr=on before relay? this carrier is
>>> driving me nuts
>> No, Kamailio (as a SIP proxy) cannot modify the Route set after the dialog is set up, in a sequential (in-dialog request) furthermore.
> The client changed the syntax of the route set - but do you really consider that a change of the route set, Alex?
> I guess the URI's are different.
> The question here is really - can Kamailio somehow clean up the URI's in the route set for this buggy client?
> /O
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