[SR-Users] Add Reason Header to kamailio generated CANCEL

Daniel-Constantin Mierla miconda at gmail.com
Wed Nov 18 10:07:39 CET 2020


Hello,

how do you expect to fill the value of the header?

Typically it is build based on the response of the INVITE, probably the
reason it was implemented inside the tm module. I need some example of
possible cases you want to be covered to see what's possible now or what
can be added to enable them.

Cheers,
Daniel

On 17.11.20 15:17, Denys Pozniak wrote:
> Hello!
>
> We need to append our own Reason header for the "relayed" CANCEL
> message, if it is not on the input.
> Like below:
>
> /if ( is_method("CANCEL") && !is_present_hf("Reason") ) {
> /
> /  append_hf("Reason: ....);/
> /  t_relay();/
> /.../
> /
> /
>
>
>
> вт, 17 нояб. 2020 г. в 13:00, Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>>:
>
>     Hello,
>
>     what is exactly the problem? The header is not added if you enable:
>
>       *
>     http://kamailio.org/docs/modules/stable/modules/tm.html#local_cancel_reason
>     <http://kamailio.org/docs/modules/stable/modules/tm.html#local_cancel_reason>
>
>     Cheers,
>     Daniel
>
>     On 16.11.20 20:43, Denys Pozniak wrote:
>>     Hello guys,
>>
>>     We have faced almost the same problem adding *Reason:
>>     SIP;cause=200;text="Call completed elsewhere"* to the t_relayed
>>     CANCEL request.
>>     Is there an elegant solution to add this header?
>>
>>     PS. Switching to the stateless mode does not look pretty for us...
>>      
>>
>>     сб, 1 февр. 2020 г. в 06:04, Alfonso Pinto
>>     <alfonso.pinto at gmail.com <mailto:alfonso.pinto at gmail.com>>:
>>
>>         Hi guys,
>>
>>         Thanks for your answers.
>>         I did try local_cancel_reason and it’s not doing anything for
>>         the CANCELs generated by kamailio. Isn’t that parameter
>>         intended for the CANCELs received and then relayed?
>>
>>         As Alex and David mentioned, what I need is to add my own
>>         reason header. There are some cases that requires to set the
>>         Reason header to something specific. IE: terminal supported
>>         call waiting in IMS.
>>
>>         Thanks for the piece of code, I will check what can be done here.
>>
>>         Regards,
>>         Alfonso
>>
>>         El El vie, 31 ene 2020 a las 22:10, Henning Westerholt
>>         <hw at skalatan.de <mailto:hw at skalatan.de>> escribió:
>>
>>             Hi Alex,
>>
>>             ok, I was reading that he wants to get just one reason
>>             header, not one dynamic generated.
>>
>>             Just looked briefly, this seems to be the code:
>>
>>             t_msgbuilder.c
>>             /* Build a local request based on a previous request; main
>>              * customers of this function are local ACK and local CANCEL
>>              */
>>             char *build_local(struct cell *Trans,unsigned int branch,
>>                     unsigned int *len, char *method, int method_len,
>>             str *to
>>                     , struct cancel_reason* reason
>>                     )
>>
>>             Cheers,
>>
>>             Henning
>>
>>             -- 
>>             Henning Westerholt – https://skalatan.de/blog/
>>             <https://skalatan.de/blog/>
>>             Kamailio services – https://gilawa.com <https://gilawa.com>
>>
>>             -----Original Message-----
>>             From: sr-users <sr-users-bounces at lists.kamailio.org
>>             <mailto:sr-users-bounces at lists.kamailio.org>> On Behalf
>>             Of Alex Balashov
>>             Sent: Friday, January 31, 2020 9:45 PM
>>             To: sr-users at lists.kamailio.org
>>             <mailto:sr-users at lists.kamailio.org>
>>             Subject: Re: [SR-Users] Add Reason Header to kamailio
>>             generated CANCEL
>>
>>             I understood Alfonso's question to implicitly be: how can
>>             I add a dynamic and variable Reason header to outgoing
>>             CANCELs?
>>
>>             Perhaps I was mistaken. But if I'm not, as far as I know
>>             there is no means of doing that. Right?
>>
>>             On Fri, Jan 31, 2020 at 08:37:48PM +0000, Henning
>>             Westerholt wrote:
>>
>>             > Hello,
>>             >
>>             > have you tried to use this parameter:
>>             >
>>             >
>>             http://kamailio.org/docs/modules/stable/modules/tm.html#local_cancel_r
>>             <http://kamailio.org/docs/modules/stable/modules/tm.html#local_cancel_r>
>>             > eason
>>             >
>>             > Cheers,
>>             >
>>             > Henning
>>             >
>>             > --
>>             > Henning Westerholt – https://skalatan.de/blog/
>>             <https://skalatan.de/blog/> Kamailio services –
>>             > https://gilawa.com
>>             <https://gilawa.com><https://gilawa.com/
>>             <https://gilawa.com/>>
>>             >
>>             > From: sr-users <sr-users-bounces at lists.kamailio.org
>>             <mailto:sr-users-bounces at lists.kamailio.org>> On Behalf Of
>>             > Alfonso Pinto
>>             > Sent: Wednesday, January 29, 2020 8:04 PM
>>             > To: Kamailio (SER) - Users Mailing List
>>             <sr-users at lists.kamailio.org
>>             <mailto:sr-users at lists.kamailio.org>>
>>             > Subject: [SR-Users] Add Reason Header to kamailio
>>             generated CANCEL
>>             >
>>             > Hi everyone,
>>             >
>>             > I've got a specific case: when the inv_fr times out, I
>>             need to add a Reason header to the CANCEL generated by
>>             kamailio. I've tried to see if I could do it in the
>>             onsend_route, but that one is not triggered for the
>>             generated CANCEL. I also checked
>>             event_route[tm:local-request], but that one isn't
>>             triggered either for the generated CANCEL.
>>             >
>>             > Is there any way to do it? Or maybe to have any pointer
>>             about where to look in the code so I may try to trigger
>>             event_route[tm:local-request] for these generated CANCELs?
>>             >
>>             > Regards,
>>             > Alfonso
>>
>>             > _______________________________________________
>>             > Kamailio (SER) - Users Mailing List
>>             > sr-users at lists.kamailio.org
>>             <mailto:sr-users at lists.kamailio.org>
>>             >
>>             https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>             <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
>>
>>
>>             --
>>             Alex Balashov | Principal | Evariste Systems LLC
>>
>>             Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
>>             Web: http://www.evaristesys.com/
>>             <http://www.evaristesys.com/>, http://www.csrpswitch.com/
>>             <http://www.csrpswitch.com/>
>>
>>             _______________________________________________
>>             Kamailio (SER) - Users Mailing List
>>             sr-users at lists.kamailio.org
>>             <mailto:sr-users at lists.kamailio.org>
>>             https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>             <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
>>
>>         _______________________________________________
>>         Kamailio (SER) - Users Mailing List
>>         sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>         https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>         <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
>>
>>
>>
>>     -- 
>>
>>     BR,
>>     Denys Pozniak
>>
>>
>>
>>     _______________________________________________
>>     Kamailio (SER) - Users Mailing List
>>     sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
>
>     -- 
>     Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>     www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>     Funding: https://www.paypal.me/dcmierla <https://www.paypal.me/dcmierla>
>
>
>
> -- 
>
> BR,
> Denys Pozniak
>
>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla

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