[SR-Users] uac_replace_from() and multiple branches

Daniel-Constantin Mierla miconda at gmail.com
Fri Aug 16 08:49:04 CEST 2019


the reason for writing the error message seems to be that you execute
the uac_replace_from() for requests within dialog (e.g., re-INVITE,
BYE). In auto-restore mode it has to be done only for the initial
request (first INVITE of the call), then the module does automatically
the changes for requests within the dialog and the responses.

You should add a condition like:

if(!has_totag()) { ... }


On 15.08.19 16:06, John Quick wrote:
> v5.2.3 of Kamailio. Serial forking is used to route calls to a multiple
> destinations as described in documentation for the TM module.
> Also using the DIALOG module - my script calls dlg_manage() before loading
> the serialised branches.
> I need to be able to substitute the username part of the From header and
> have been trying this with calls to uac_replace_from().
>  modparam("uac", "restore_mode", "auto") 
>  modparam("uac", "restore_dlg", 1)
> There is no problem if all branches use one substituted From username, in
> which case my script calls uac_replace_from() in the main route.
>   uac_replace_from("sip:" + $avp(route:src) + "@" + $fd);
> However, I may need to substitute a different value for each branch. Can
> this be done?
> I tried moving the call to uac_replace_from() into the branch route, but
> then I get an error when the final BYE is received:
>  ERROR: uac [replace.c:281]: replace_uri(): decline FROM replacing in
> sequential request in auto mode (has TO tag)
> Is there a simple solution to this please? Hoping I can still use UAC auto
> restore mode because manual restore looks quite tedious/complex.
> Thanks.
> John Quick
> Smartvox Limited
> www.smartvox.co.uk
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Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda

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