[Kamailio-Users] OpenSER ActiveWatcher Table

[George Lee]

I don't have a proxy. I have Kamailio running as both SIP server and
Presence server. When I subscribe and un-subscribe, subscribe and
un-subscribe, it creates 2 entries for every contacts during subscribe
but not removing the entries when un-subscribe. I don't know what's
wrong. Here is my setup:

modparam("presence|presence_xml", "db_url",
   "mysql://openser:openserrw@10.1.20.43/openser")
modparam("presence_xml", "force_active", 1)
modparam("presence", "server_address", "sip:10.1.20.23:5060")
modparam("presence", "fallback2db", 1)

Should I use the "fallback2db" option? If not, how big is the cache
memory Kamailio needs to support a large subscriber base with
thousands of contact lists.

Thanks,

On Wed, Oct 15, 2008 at 5:38 AM, Juha Heinanen <jh at tutpro.com> wrote:
> Klaus Darilion writes:
>
>  > > When a SUBSCRIBE message is received, OpenSER creates an entries in
>  > > the ActiveWatcher table. This is used to generate NOTIFY message to
>  > > watchers. The problem I have seen is that OpenSER keeps on creating
>  > > new entries to the ActiveWatchers if the SIP UA deregister, register,
>  > > deregister, register, etc. for several times. This triggers multiple
>  > > NOTIFY messages to be sent to watchers. How does OpenSER remove
>  > > entries in the ActiveWatcher table? It deosn't look like a SUBSCRIBE
>  > > with expires=0 would delete an entry in the table.
>  >
>  > It should, if not this is a bug. Of course there may be some delay as
>  > the write back to DB is not synchronous.
>
> i just tested with twinkle and kamailio 1.4 and when twinkle
> un-susbcribes, it is deleted from active_watchers table.
>
> perhaps you should try to upgrade your proxy.
>
> -- juha
>