[SR-Users] $ru vs. $fu as r/w pseudo variables

Ovidiu Sas osas at voipembedded.com
Tue Mar 22 14:11:27 CET 2022


Hello Juha,

The first line of a SIP request is parsed and kept separately from the
rest of the SIP message. Because of this, it is easy to apply instant
changes to it.
This is what I remember checking the code long time ago, it might not
be 100% accurate.

Hope this helps,
-ovidiu

On Mon, Mar 21, 2022 at 7:15 AM Juha Heinanen <jh at tutpro.com> wrote:
>
> Daniel-Constantin Mierla writes:
>
> > Operations to change the headers and body are not applied immediately:
> >
> >   *
> > https://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or
>
> OK, got it.  What makes $ru special, i.e., why that is applied
> immediately?
>
> -- Juha
>
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VoIP Embedded, Inc.
http://www.voipembedded.com



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