Juha,
Could your proxy distinguish between subscription for the presence server and
those for the UA based on the Request-URI? Something like this:
For the presence server:
SUBSCRIBE sip:ps.example.com
For the UA:
SUBSCRIBE sip:[EMAIL PROTECTED]
cheers,
(-:bob
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Juha Heinanen
Sent: Tuesday, October 28, 2008 10:46 AM
To: Iñaki Baz Castillo
Cc: [email protected]
Subject: Re: [Sip] submission of a new I-D: "Dialog Event foR Identity
VErification"
Iñaki Baz Castillo writes:
> > > I'm afraid that you are assuming that a presence server is used.
> > > Derive is an _end-to-end mechanism_ implemented in the UAs.
> >
> > if i have configured my proxy to use presence server for local users,
> > how does subscribe reach the UA?
>
> If you proxy includes a dialog presence server, then the SUBSCRIBE
> doesn't need to reach the UA since your proxy already has the
> information about dialogs of that UA.
inaki,
now i'm confused again. in above, you say that this is a UA thing, now
you seem to indicate, that proxy needs to keep track of the dialogs.
so far i'm not convinced that proxy can reliable keep track of dialogs.
in openser/kamailio environment, for example, keeping track of dialogs
is implemented using dialog module, which has the history of being the
most buggies module of all. perhaps that is due to the difficulty of
the problem, i.e., proxy is made to do something it is not really
intended for.
-- juha
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