[OpenSIPS-Users] Opensips don't send Cancel.

[Muhammad Shahzad]

Well, custom headers module parameter is the right place for your needs, if
its not working then its most likely a bug and you should report it.

Thank you.


On Wed, Nov 21, 2012 at 6:02 PM, Jorge Henrique Pinho <
jorge-h-pinho at ext.ptinovacao.pt> wrote:

> Hi, thank for your feedback.
> Custom headers was my first approach, but the problem remains, the
> User-Agent header pass from the dialog of one side to the other side but
> the value is changed anyway.
>
> Is there a way that i can define specific headers to be untouched by b2b
> module or anywhere in the routines where i already see the modified message
> and have permissions to manipulate it?
>
> Kind regards,
>
> Jorge Pinho
>
> ________________________________________
> From: users-bounces at lists.opensips.org [users-bounces at lists.opensips.org]
> On Behalf Of Muhammad Shahzad [shaheryarkh at gmail.com]
> Sent: 21 November 2012 14:53
> To: OpenSIPS users mailling list
> Subject: Re: [OpenSIPS-Users] Opensips don't send Cancel.
>
> No, don't temper with opensips generated request in local route, it will
> result in unexpected behaviour as you have already observed, right right
> way to do is define custom headers that should be passed from one leg to
> other leg, as described here,
>
> http://www.opensips.org/html/docs/modules/1.8.x/b2b_logic.html#id250020
>
> The purpose of local route is to do things that do not modify generated
> request in general (specially in case of B2BUA never modify the request).
> You can use this route e.g. to trigger a billing event, or cdr or some db
> operation etc. etc.
>
> Thank you.
>
>
> On Wed, Nov 21, 2012 at 12:51 PM, Jorge Henrique Pinho <
> jorge-h-pinho at ext.ptinovacao.pt<mailto:jorge-h-pinho at ext.ptinovacao.pt>>
> wrote:
> Good morning.
> I have installed opensips-1.7.2-2.el5 and I am using b2b module and
> encountering a strange behavior.
> B2b module changes the original User Agent header and I need this
> information to be preserved; so in the route script I used an avp to store
> the original User Agent value, call b2b_init_request and on local_route
> script I use remove_hf and append_hf functions to replace the User Agent
> header with the original one.
>
> The behavior is : If I want to cancel the call, opensips receives a Cancel
> message, replies with a 200 canceling but never forwards the Cancel message.
> The behavior is not deterministic, sometimes opensips forwards the Cancel,
> and sometimes it does not.
>
> When I don't use the remove_hf and append_hf functions, opensips behaves
> as expected, and always forwards the Cancel.
>
> Kind regards
>
> Jorge Pinho
>
>
> Jorge Pinho
> Analyst/Developer
> Network Platforms and Multimedia Solutions
> Multimedia Division
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