[SR-Users] Kamailio dialog presence (BLF)

[Michal Škuta]

Hi,
the BLF lights comes online during call. Problem is when the watchers phone
is rebooted and the lights after reboot are off, but before restart they
were green/red.

I looked to the source code of presence module and I think that I found the
problematic part in function *update_subscrition()* in file
*modules/presence/subscribe.c*:

        if(subs->expires!= 0 && subs->event->wipeer)
        {
            LM_DBG("send Notify with winfo\n");
            if(query_db_notify(&subs->pres_uri, subs->event->wipeer, subs)<
0)
            {
                LM_ERR("Could not send notify winfo\n");
                goto error;
            }
            if(subs->send_on_cback== 0)
            {
                if(notify(subs, NULL, NULL, 0, 0)< 0)
                {
                    LM_ERR("Could not send notify\n");
                    goto error;
                }
            }
        }
        else
        {
            if(send_fast_notify && (notify(subs, NULL, NULL, 0, 0)< 0))
            {
                LM_ERR("Could not send notify\n");
                goto error;
            }
        }
The presence module is always going to this line> if(send_fast_notify &&
(notify(subs, NULL, NULL, 0, 0)< 0))
and it sends just empty notify, it should send the last notify (which was
from the last call).
What is subs->event->wipeer and why do we need to check it?

Any help is appreciated.

po 16. 7. 2018 o 9:37 Daniel-Constantin Mierla <miconda at gmail.com>
napísal(a):

> Hello,
>
> On 12.07.18 16:41, Michal Škuta wrote:
>
> Hello,
>
> I am trying make presence module work with Kamailio. Right now I am
> testing these modules: presence, presence_xml, presence_dialoginfo, pua and
> pua_dialoginfo.
>
> I had some success, the BLF is working only when the monitored extension
> is calling. When the monitored extension is calling, then the BLF changes
> its color (red). After end of the call the BLF changes color to green.
>
> My problem is when a User comes on-line then it sends SUBSCRIBE with *Event: dialog* and
> don't get notified of its subscribers state and BLF is not changed.
>
>
> does it come online during a call?
>
> I found similar problem in this mail list :https://lists.kamailio.org/pipermail/sr-users/2017-March/096314.html But is not working for me.
>
>
>
> Second question is about BLF and offline state. I can not found anything in RFC, there is no offline state, no way to turn off the BLF lamp from green to OFF.
>
> I found only this pdf from grandstream: http://www.grandstream.com/sites/default/files/Resources/GXP21x0_Eventlist_BLF_Guide.pdf  mentioning offline state on page 8.
>
> Does anyone have experience with it?
>
>
> BLF is about dialog states, not user (device) states, so it is about being
> in a call (busy) or or not. Not to get notifications about it, you should
> unsubscribe for dialog event.
>
> Cheers,
> Daniel
>
> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio World Conference -- www.kamailioworld.com
>
>
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