[SR-Users] append_hf to CANCEL

Alex Balashov abalashov at evaristesys.com
Wed Nov 20 15:21:12 CET 2013


If there is, I don't know it.

Out of curiosity, why would you want to do that?

On 11/20/2013 09:19 AM, Grant Bagdasarian wrote:

> I see, so there is no way to append a header to the CANCEL created by Kamailio?
>
> I tried the onsend_route and branch_route, but none of them worked.
>
> -----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, November 20, 2013 3:09 PM
> To: sr-users at lists.sip-router.org
> Subject: Re: [SR-Users] append_hf to CANCEL
>
> On 11/20/2013 09:05 AM, Grant Bagdasarian wrote:
>
>> Does append_hf not work for CANCEL requests?
>
> Correct:  CANCEL is a "hop-by-hop" request where the proxy is a distinct hop, i.e. UAC sends a CANCEL to the proxy, and the proxy sends a separate CANCEL of its own on the branch that it initiated.  This is in contrast to something like a BYE, and most requests, which are end-to-end request that the proxy simply relays upstream as received.
>
> -- Alex
>
> --
> 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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-- 
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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