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

[Julia]

We need some number manipulation for outgoing calls to PSTN GW.
The same manipulations must be in "ru" and "tu", because our PSTN GW adds
redirection when tu ≠ ru.
When we used INVITE re-parsing for CANCEL, modified "tu" is not included.

-----Original Message-----
From: sr-users-bounces at lists.sip-router.org
[mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Alex Balashov
Sent: Wednesday, January 30, 2013 3:53 PM
To: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
UsersMailing List
Subject: Re: [SR-Users] How to rewrite "tu" in CANCEL message ?

Hello Julia, 

There is a very real question that should probably be asked: why would you
want to do that? 

Kamailio provides many capabilities, but just because you can, doesn't mean
you should. :-) 

With that in mind, I don't know of any SIP scenario in which altering the To
header in a CANCEL message to something other than what it was in the INVITE
transaction to which it corresponds is appropriate, either as a UA or as a
proxy. But, perhaps it is my ignorance or lack of imagination at fault. 

-- Alex

Julia <juliabo at gmail.com> wrote:

>Hello all,
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>Is there any way to rewrite "tu" in CANCEL message in 3.2.1?
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>We use remove_hf / insert_hf   for INVITE's "tu" modification before
>t_relay.
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>It works fine, but it doesn't work for CANCEL (INVITE re-parsing is
>disabled).
>
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>
>Ths,
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>------------------------------------------------------------------------
>
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-- 
Sent from my mobile, and thus lacking in the refinement one might expect
from a fully-fledged keyboard. 

Alex Balashov - Principal 
Evariste Systems LLC 
235 E Ponce de Leon Ave 
Suite 106 
Decatur, GA 30030 
United States
Tel: +1-678-954-0670
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/

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