But no UDP, right? It's what I wanted to know in order to see what kind of patterns can be applied, given that the UDP is connectionless.

For TCP/TLS, what can work, it's to use tcpops module which can execute an event route when a tcp/tls connection is dropped. If you track the association of connection id with the call-id of the presence publish, then you may be able to do some tricks and lower the expires of the published presence state. I haven't had the time to see what's possible there, but could worth investing.

An alternative would be to enhance presence module to behave as registrar/usrloc (which can delete contact records on connection drop) to expire documents when tcp/tls connection is closed (not sure if anyone already added it).

Btw, it's your client (I mean, can you control its development/features), or it is just some generic sip softphone? Because there can be some tricks added to the client side as well if you control it.

Cheers,
Daniel

On 21/11/16 12:27, João Resende wrote:

Can be both option TCP or TLS
2016-11-21 11:26 GMT+00:00 Daniel-Constantin Mierla <miconda@gmail.com>:
Hello,

are the clients connected over upd or tcp/tls?

Cheers,
Daniel

On 21/11/16 12:13, João Resende wrote:

I'm testing kamailio with a SIP client with presence support, when I get a connection drop from a client (i.e when the client lost the access to the Internet connection) I do not receive the change in the status to offline immediately, I just received when the timeout from the presentity database finishes. Exists a way to define this? or it is a bug? or should be a new feature?

I know that I'm able to change the expiry parameter from the presentity table, but that increases my battery consumption and the data exchange, the same happens if I reduce the publish interval on the client side.

-- Daniel-Constantin Mierla http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio Advanced Training, Berlin, Nov 28-30, 2016 - http://www.asipto.com
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 28-30, 2016 - http://www.asipto.com