[SR-Users] How to rewrite "tu" in CANCEL message ?

Daniel-Constantin Mierla miconda at gmail.com
Thu Jan 31 12:24:24 CET 2013


Hello,

have you changed the value for tm parameter 'reparse_invite':

http://kamailio.org/docs/modules/stable/modules/tm.html#reparse_invite

Cheers,
Daniel

On 1/31/13 12:02 PM, Julia wrote:
> OK, but a problem is in partially re-parsing of CANCEL.
>
> ru = modified ru;
> tu = original tu;
> fu = original fu.
> In this case 481 received from GW.
>
>
> INVITE  --> Kam   INVIRE -->
> ru=a			   ru=c	
> tu=a			   tu=c
> fu=b			   fu=d 	
> <---100            <--- 100
> <---180            <---180
> CANCEL  -->       CANCEL -->
> ru=a                ru=c
> tu=a                tu=a
> fu=b                fu=b
>                 <--481 Call/Transaction does not exist
>
> Thank you,
>
> -----Original Message-----
> From: sr-users-bounces at lists.sip-router.org
> [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Olle E.
> Johansson
> Sent: Thursday, January 31, 2013 10:52 AM
> To: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
> UsersMailing List
> Subject: Re: [SR-Users] How to rewrite "tu" in CANCEL message ?
>
> Unless you rewrote the To-URI in the INVITE, you really should not try to
> change a CANCEL. It needs to be almost a copy of the matching INVITE.
>
> /O
> 30 jan 2013 kl. 14:40 skrev Carsten Bock <carsten at ng-voice.com>:
>
>> Hi,
>>
>> probably the best way is to simply use the uac_replace_to-method from
>> the uac module:
>>
>> http://www.kamailio.org/docs/modules/devel/modules/uac.html#id2494560
>> (tested with 3.3)
>>
>> Kind regards,
>> Carsten
>>
>> 2013/1/30 Julia <juliabo at gmail.com>:
>>> Hello all,
>>>
>>>
>>>
>>>
>>>
>>> Is there any way to rewrite “tu” in CANCEL message in 3.2.1?
>>>
>>>
>>>
>>> We use remove_hf / insert_hf   for INVITE’s “tu” modification before
>>> t_relay.
>>>
>>>
>>>
>>> It works fine, but it doesn’t work for CANCEL (INVITE re-parsing is
>>> disabled).
>>>
>>>
>>>
>>> Ths,
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>> sr-users at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>
>>
>> -- 
>> Carsten Bock
>> CEO (Geschäftsführer)
>>
>> ng-voice GmbH
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>>
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>>
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>>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
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