19 Mar
2016
19 Mar
'16
9:41 p.m.
Thanks for your quick response.
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.
It should be theoretically possible to remove some of the via and
record-route headers, assuming the contact is also re-written. The end
point's (phones) themselves do not need to be aware of anything downstream
of the SIP server they're registered too.
See my blog post on this topic:
http://blog.csrpswitch.com/sip-udp-fragmentation-and-kamailio-the-sip-heade…
Thanks for the link!
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/
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