[SR-Users] Removing Via and Record-Route headers

[Alex Balashov]

Marrold,

No, you can't remove those headers. They serve an essential purpose and 
the endpoints won't consider the requests or responses valid without them.

See my blog post on this topic:

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

And you certainly can't hide topology this way.

-- Alex

On 03/19/2016 09:26 PM, Marrold wrote:

> Hi,
>
> Is there any way to remove Via and Record-Route headers from requests
> sent to an endpoint and update the contact header, but have Kamailio
> statefully remember where the replies need to route?
>
> I imagine this would involve mangling the packets slightly to behave
> similar to a B2BUA.
>
> My motivations, in order of priority -
>
> 1) Reduce UDP packet size to avoid MTU limitations
> 2) Improve interoperability, don't expect end points to be able to
> properly parse / process many via / record-route headers
> 3) Hide topology.
>
> If someone could point me in the right direction in terms of
> configuration or modules, that would be great.
>
> Thanks
>
>
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-- 
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States

Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/