For your second question, do not mess with the contact. The proper solution is the path extension. See the path module.

—
Sent from mobile, with due apologies for brevity and errors.

On Aug 21, 2021, at 6:19 AM, Thomas Grande <tgrande@aligera.com.br> wrote:


Hi there!

I bumped into this post to perform forwarding of REGISTER requests and then
saving a local cache on 2xx replies from main Registrar:

https://lists.kamailio.org/pipermail/sr-users/2020-October/110779.html

I think I understand all the steps described, but some features I need are missing:
- How to change the Via headers to perform topology hiding? I understand TOPOS and TOPOH do not work on these types of messages.
- Change contact header so that registrar responses traverse the Kamailio box. (Use textops I suppose?)
- Besides, is this approach still the best in comparison to OpenSIPs mid-registrar module?

Thanks in advance,

--
Thomás Alimena Del Grande
Engenharia - Aligera
Tel. 51 3500-0121
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