[OpenSIPS-Users] Help with the dialog module please

[Bogdan-Andrei Iancu]

Hello Brian,

I suggest to create the dialog state just after the auth is done.

The difference between creating a dialog via flag and create_dialog() 
function is that the create_dialog() is creating the dialog on the spot, 
while the flag is just marking the request for dialog creation - the 
creation itself is done inside of the t_relay() function, when the call 
is sent out.

Regards,
Bogdan

opensipslist at encambio.com wrote:
> Hello list,
>
> Does the dialog module define a dialog as from the:
>
>   First INVITE that appears with Call-ID '1234'
>
> ...or
>
>   Second INVITE that appears with Call-ID '1234'
>
> I'm asking because if a unauthenticated INVITE arrives the sending
> UAC will be forced to send a second INVITE (with a new cseq) that
> includes authentication credentials. If the second INVITE with its
> auth credentials is accepted, then I assume that the dialog begins.
> It therefore follows that the first INVITE will not be included in
> the dialog modules table of dialogs, and will be ignored in the
> dialog context. Is that right?
>
> What I'm trying to do is set_dlg_flag("20") in the first INVITE and
> then read is_dlg_flag_set("20") in the next one. It would be
> convenient if the first INVITE began the dialog and the second
> INVITE was considered part of the dialog as well. Is this possible?
>
> Can I change some SIP header of the second INVITE to match the
> first, so that the dialog module believes them both to be in the
> same dialog?
>
> Another question, is there any difference between:
>
>     modparam("dialog", "dlg_flag", 4)
>     route {
>         setflag(4);
>     }
>
> ...and
>
>     route {
>         create_dialog();
>     }
>
> Are they completely interchangeable? Does this make sense:
>
>     modparam("dialog", "dlg_flag", 4)
>     route {
>         setflag(4);
>         create_dialog();
>     }
>
> Thanks,
> Brian
>
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>
>   


-- 
Bogdan-Andrei Iancu
www.voice-system.ro