[SR-Users] Using dialog_ng

[Jason Penton]

Hi Shane,

dialog_ng started as a prototype by us quite a while ago to form the basis
of dialogs in our IMS implementation using Kamailio. We took quite a lot
from the existing dialog module at the time and then built the additional
functionality on top. There were some things (like dlg_manage) that we did
not move across.... and this is bad.... so I apologise.

Right now to get a dialog recorded you need to define a flag in the
modparam:
modparam("dialog_ng", "dlg_flag", 10)

And then when you want to track a dlg do something like:

if (is_method("INVITE")) {
   setflag(10);
   ...
}

We have had a lot of other work to focus on and haven't spent too much time
on dialog_ng but we will certainly put some effort into making it easier to
use and more complete.

Cheers
Jason

On Thu, Feb 5, 2015 at 8:03 PM, Shane Harrison <Shane.Harrison at imgtec.com>
wrote:

>
> Thanks Daniel - that clarity helps.  Apologies if I should have been able
> to glean that from the docs - I just didn't see it in my reading.  FYI,
> dialog-ng has deprecated the dlg_mange() function.
>
> Can anybody who has used or involved in writing the dialog-ng module shed
> some light on what the new mechanism is for creating an early dialog
> structure?
>
> Cheers and thanks
> Shane
>
> ________________________________________
> From: sr-users [sr-users-bounces at lists.sip-router.org] on behalf of
> Daniel-Constantin Mierla [miconda at gmail.com]
> Sent: 06 February 2015 00:02
> To: Kamailio (SER) - Users Mailing List
> Subject: Re: [SR-Users] Using dialog_ng
>
> Hello,
>
> I haven't used the dialog_ng module, but (as expected based on the
> dialog module) if you only set the FLT_DIALOG flag, then the dialog is
> created when calling t_relay(). The dialog module has dlg_manage()
> function which creates the dialog immediately, maybe that's in dialog_ng
> as well.
>
> Cheers,
> Daniel
>
> On 04/02/15 05:28, Shane Harrison wrote:
> > Hi all,
> >
> > I think the lack of response to my previous thread is probably because
> it was too complicated.  I have now narrowed my problem down after further
> archive readings .
> >
> > I am trying to use the dialog_ng module along with the
> ims_charging_module.  Upon reception of an INVITE, a call to the Ro_CCR()
> from the request_route script is made.  That function does a check that the
> dialog record exists (binds to dialog module and does a "get_dlg(msg)"
> call) - this fails i.e. dialog is not found.
> >
> > Running kamailio 4.2.2 and relevant sections of kamailio.cfg are:
> > modparam("dialog_ng", "dlg_flag", FLT_DIALOG)
> > modparam("dialog_ng", "timeout_avp", "$avp(DLG_TIMEOUT_AVP)")
> > modparam("dialog_ng", "detect_spirals", 1)
> > modparam("dialog_ng", "profiles_no_value", "orig ; term")
> >
> > request_route {
> >         # NAT detection
> >         route(NATDETECT);
> >
> >         # Set DLG flag to track dialogs using dialog2
> >         if (!is_method("REGISTER|SUBSCRIBE"))
> >                 setflag(FLT_DIALOG);
> >
> >         # handle requests within SIP dialogs
> >         route(WITHINDLG);
> >
> >         ### only initial requests (no To tag)
> >
> >         # CANCEL processing
> >         if (is_method("CANCEL"))
> >         {
> >                 if (t_check_trans())
> >                         t_relay();
> >                 exit;
> >         }
> >
> >         t_check_trans();
> >
> >         if (is_method("INVITE"))
> >         {
> >                 set_dlg_profile("orig");
> >                Ro_CCR("CHARGING_CCR_REPLY", "orig", "SCUR", "",
> "30","CCR_location");
> >        }
> >
> >
> > So my question is, "should the above logic create a dialog record on the
> initial INVITE?" and if yes then "what possible reasons might there be for
> the Ro_CCR() function not be able to detect it exists?"
> >
> > Cheers
> > Shane Harrison
> >
> >
> >
> >
> > _______________________________________________
> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> > sr-users at lists.sip-router.org
> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
> --
> Daniel-Constantin Mierla
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio World Conference, May 27-29, 2015
> Berlin, Germany - http://www.kamailioworld.com
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>



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