[SR-Users] uac_replace_from and uac_auth fails to authenticate.

[Carsten Bock]

God morgen Kjeld,

You can use uac_replace_from/_to in a branch route, e.g.:

[...]
$avp(from_uri) = "sip:"+$dbr(ra=>[0,1])+"@EXTERNALIP";
t_on_branch("UPDATE_FROM");
[...]

branch_route(UPDATE_FROM) {
  uac_replace_from("$avp(from_uri)");
}

This should solve your issue.

Med venlig hilsen,
Carsten Bock (lidt Vendelbo)
--
Carsten Bock I CTO & Founder

ng-voice GmbH

Trostbrücke 1 I 20457 Hamburg I Germany
T +49 40 524 75 93-40 | M +49 179 2021244 I www.ng-voice.com

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Managing Directors: Dr. David Bachmann, Carsten Bock


Am So., 19. Jan. 2020 um 23:20 Uhr schrieb Kjeld Flarup <
kjeld.flarup at liberalismen.dk>:

> I have a setup where I have a fallback to a GSM number
>
> I look up the GSM number and provider information in a database and sets
> the headers.
>
>                    dlg_manage();
>                    $du = "sip:" + $dbr(ra=>[0,0]);
>                    $tu = "sip:"+$rU+"@"+$dbr(ra=>[0,0]);
>                    $ru = "sip:"+$rU+"@"+$dbr(ra=>[0,0]);
> uac_replace_from("sip:"+$dbr(ra=>[0,1])+"@EXTERNALIP");
>
> After this the call goes to a failure_route to do uac_auth()
>
> Now my problem is that this works with the providers Asterisk server.
> But if the call is send to the providers Kamailio server, authentication
> is rejected.
>
> Removing uac_replace_from makes the call accepted on the Kamailio server
>
> The only possible problem I can see is that the first INVITE without
> authentication, has correct From header.
> But the second with the nonce and auth, uses the wrong From header. Thus
> two different From headers in the same SIP dialog.
>
> Unfortunately uac_replace_from is not allowed in failure_route, so I
> could test if this is the problem.
>
> Is the two different From headers a problem, and how could that be fixed.
>
>
> --
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>
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