[reSIProcate] NAT SIP keep alives

[Sergio García Murillo <Sergio.Garcia@xxxxxxxxx>]

Hi all

I'm running a client behind a NAT firewall connected with an external proxy 
doing symmetric signaling to avoid the nat.
The problem is that after some short time the client stops receiving invites 
from the proxy because of the firewall drops the nat entry.
Is it possible to periodically send an empty packet to the proxy (a keep alive 
as x-lite does) to maintain the nat open at the firewall??
I can't use register whit short time values because the proxy rejects 
registering with shorts expiration values.

Greetings
                Sergio
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