[Users] OpenSER + pa_mod

[Klaus Darilion]

Hi Bernhard!

The current pa module is known to make problems. There is effort to 
enhance presence support for the next openser release. There is also a 
new pa module in ser CVS, which you could use: Just use openser as proxy 
and forward SUBSCRIBE/PUBLISH/NOTIFY to the ser PA backend.

regards
klaus

Bernard Chan wrote:
> Hello,
> 
> I have OpenSER 1.0.1 (and upgraded to OpenSER 1.1.0 today). I am now
> experimenting with the use of pa_mod. The module is functioning pretty
> well, with one problem. If the SIP client is terminated and restarted
> right away, the SIP client's presence view is not updated.
> 
> As I traced, I found that both times the SUBSCRIBE requests are received
> by OpenSER. From the packet sniffer I see some NOTIFYs are indeed sent
> to the client, but are rejected, I think probably because the Call-ID
> does not match the current one (it is from the earlier instance), and
> the client returned the "subscription does not exist" error status to
> the server. Then OpenSER seemed not to send further NOTIFYs, so there is
> no update to the presence information. If instead I restart the SIP
> client after subscription expires, the behaviour seems to be normal.
> 
> Being pretty new to OpenSER, I would like to ask if this is normal? And
> anything I can do to solve the problem? Thank you.
> 
> -------------------------------------------------------
> [...]
> loadmodule "/usr/local/lib/openser/modules/pa.so"
> [...]
> #modparam("pa", "default_expires", 10)
> modparam("pa", "timer_interval", 3)
> modparam("pa", "watcherinfo_notify", 0)
> modparam("pa", "new_tuple_on_publish", 1)
> modparam("pa", "callback_update_db", 1)
> -------------------------------------------------------
> 
> Regards,
> Bernard Chan.
> 
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