From abalashov@evaristesys.com Wed Nov 29 21:34:52 2023
From: Alex Balashov <abalashov@evaristesys.com>
To: sr-users@lists.kamailio.org
Subject: [SR-Users] Re: No access to variables within timer route
Date: Wed, 29 Nov 2023 16:34:28 -0500
Message-ID: <3BDD4FA6-2B1B-40E5-8E53-B86E9C828680@evaristesys.com>
In-Reply-To: <170129176081.1570.7772619828783390214@main.kamailio.org>
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Hi,

It is important to know that the scope of $var(...) is per-process[1], and ti=
mer functions run in a different process.=20

When REFRESH_CALLSTATE_TIMER runs, it is not in response to any particular SI=
P message or call, and it does not know the context of any particular SIP mes=
sage or call.=20

-- Alex

[1] Which also has unexpected consequences when a different SIP message hits =
the same process in which a $var() was set before; they are process-persisten=
t, as the documentation notes.

> On 29 Nov 2023, at 16:02, dries--- via sr-users <sr-users(a)lists.kamailio.=
org> wrote:
>=20
> Hi,
>=20
> I have a timer which is called each 5 seconds:
> modparam("timer", "declare_timer", "REFRESH_CALLSTATE_TIMER=3DREFRESH_CALLS=
TATE_TIMER,5000,slow");
>=20
> I'm enabling setting the variable "testvar" and enabling the timer when an =
INVITE is received:
> if (is_method("INVITE|ACK|UPDATE|CANCEL|BYE")) {
>    $var(testvar) =3D "blablabla";
>    timer_enable("REFRESH_CALLSTATE_TIMER", "1");
> ...
>=20
> route[REFRESH_CALLSTATE_TIMER] {
> xlog("L_INFO", "Testvariable: $var(test)\n");
> }
>=20
> However, the variable is always 0:
> INFO: <script>: Testvariable: 0
>=20
> I've also tried printing pseudovariables like $ci, $du but nothinh seems ac=
cessible. Is there a workaround for this?
>=20
> Best regards,
> Dries
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--=20
Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com
Tel: +1-706-510-6800


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