Dec 11, 2012 at 4:58 PM

Did you ever determine what causes the 'one update per subscription' behavior? I'm seeing the same thing, and have come across a few other posts about it but no actual diagnosis. With the circumventSubsciption flag set the service is effectively polling at the _resubscribeDelay interval and that won't scale.   

Jan 17, 2013 at 4:33 PM

In my case the listening port was being blocked at the firewall. The initial subscribe request returns with a presence value but that was the only information that the trusted app ever got. It wasn't receiving notifications when presence changed until I opened that port.