[SR-Users] Kamailio compact headers ?!

[Alex Balashov]

Hi Stefan, 

Sorry for answering the wrong question. :-) 

Take a look at this blog post:

http://blog.csrpswitch.com/sip-udp-fragmentation-and-kamailio-the-sip-header-diet/

On July 6, 2016 6:02:26 AM EDT, Anonim Stefan <fanx07 at gmail.com> wrote:
>Hi,
>
>True, I was thinking only about the "Via" and "Record-Route" added by
>Kamailio. Didn't know Record-Route had no short form (I was thinking of
>something like "rr" due to rr module I guess). In this case I suppose
>there
>is not much to gain, only from "Via".
>
>I'm facing some fragmentation issues. My goal is to make the SIP packet
>as
>small as possible while removing as less SIP headers as I can. I'd
>still
>like to use UDP.
>
>Thanks,
>Stefan
>
>
>On Wed, Jul 6, 2016 at 12:48 PM, Daniel-Constantin Mierla
><miconda at gmail.com
>> wrote:
>
>> Record-Route has no compact name variant, afaik -- also quickly
>checking
>> the iana assignments, shows the same:
>>
>>   -
>>
>>
>http://www.iana.org/assignments/sip-parameters/sip-parameters.xhtml#sip-parameters-2
>>
>> If smaller size is the target, then Via makes no big difference, so
>it
>> was never a goal -- the changes in code should not be big.
>>
>> A quick option is to redefine MY_VIA in config.h to use the compact
>form.
>>
>> A proper option could be introducing a core parameter, adding a new
>> define for the short version and use the normal or short form a
>matter
>> of the parameter value. The function that needs to be changed is
>> via_builder().
>>
>> Cheers,
>> Daniel
>>
>>
>> On 06/07/16 11:40, Olle E. Johansson wrote:
>> >> On 06 Jul 2016, at 11:38, Alex Balashov
><abalashov at evaristesys.com>
>> wrote:
>> >>
>> >> Stefan,
>> >>
>> >> The construction of headers is generally the province of the
>> UAs/endpoints of the call. Kamailio understands compact headers, as
>all
>> compliant SIP stacks do, but it can't singlehandedly reformat them.
>> > I think the question was about the headers added by Kamailio - Via
>and
>> Record-Route. Which makes the question perfectly valid :-)
>> > I can’t remember such a setting anywhere and am curious on why it’s
>> needed.
>> > /O
>> >
>> > _______________________________________________
>> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>list
>> > sr-users at lists.sip-router.org
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>>
>> --
>> Daniel-Constantin Mierla
>> http://www.asipto.com - http://www.kamailio.org
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>list
>> sr-users at lists.sip-router.org
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>>
>
>
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>
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-- Alex

--
Principal, Evariste Systems LLC (www.evaristesys.com)

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