[OpenSER-Devel] OpenSER usrloc timeouts

[Iñaki Baz Castillo]

El Wednesday 04 June 2008 08:08:29 Jason Penton escribió:
> Hi all,
>
> I would like to try and implement a solution within OpenSER around timeouts
> for contacting devices.
>
> For example, currently if a device drops off the network without a SIP
> de-register, OpenSER still tries to forward INVITE requests to the device.

It's logical. OpenSer can't realize that a user has disconnected from the 
network.


> if not, does anybody have any ideas. I was thinking of a keepalive timeout
> or some sort of SIP 'ping' before providing a URI from Usrloc?????

OpenSer can send a ping to registered users (natted or not natted, but just 
UDP) but will not delete a user location if it doesn't reply to a 
ping/OPTIONS. I already asked it some time ago and I think OpenSer shouldn't 
do it:
Imagine a user lots internet connection during 30 seconds and OpenSer deletes 
its location since the ping failed. But note the user is available after 
those 30 seconds and he doesn't know that it must send a REGISTER to 
re-create its location and receive calls.


-- 
Iñaki Baz Castillo
ibc at in.ilimit.es