[sr-dev] ideas on dialog spiral distinction

Jason Penton jason.penton at gmail.com
Wed Aug 24 16:35:19 CEST 2011


Thanks Klaus,

Will look into that!

On Wed, Aug 24, 2011 at 4:07 PM, Klaus Darilion <
klaus.mailinglists at pernau.at> wrote:

>
>
> Am 24.08.2011 15:19, schrieb Jason Penton:
> > So for an invite from UA1 to UA2 the INVITE will appear twice at the
> > same PCSCF (assuming there is only one PCSCF in this case). This will
> > result in spiraling on Kamailio right now, BUT there is no way to
> > distinguish between the 'originating' dialog and the 'terminating'
> > dialog. why is this a problem? well it would be nice to know in the
> > config file in which mode you are in. I am sure there will be non ims
> > related scenarios but I can think of any ;)
>
> For transactions you can find out the direction by using fromtag cookie
> (ftag) in RR header and the is_direction() function.
>
> I guess if you want such a feature to extend the dialog capabilities, it
> can be done in a similar way (record-route cookies)
>
> regards
> Klaus
>
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