[SR-Users] TO Header corrupted in RE-INVITE

[Alex Balashov]

Yes, this is possible. See the questions that deal with msg_apply_changes():

https://www.kamailio.org/wiki/tutorials/faq/main

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

> On Feb 7, 2021, at 9:37 AM, alirsm <alirsm at protonmail.com> wrote:
> 
> 
> Hi,
> 
> Call to a number forwarded to a FAX by using two Kamailio proxies. 
> 
> (INVITE) --> KamailioA --> GW1 --> KamailioB --> GW2 --> FAX
> FAX --> (RE-INVITE) --> GW2 --> KamailioB --> (TO Header being corrupted)
> 
> KamailioB is corrupting TO header when receiving RE-INVITE and causing the call to fail.
> 
> 1) Only one "uac_replace_from()" is being used in each Kamailio.
> 2) GW1 is adding +1 (using E164 format) to URI and FROM headers.
> 
> I was wondering if any of the above might cause the TO header corruption.
> 
> Any help would be appreciated.
> AL
> 
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