What can cause a angularjs / signalr client to fall asleep?
<p>I have an angularjs client (asp.net/mvc 5) that gets data from a SignalR hub. Everything is working fine, but I have noticed often when I come back to client after being away for a couple of hours, the client application (browser) are no longer being updated. If I reload, the page starts to update again. The backend has been alive during all this.</p>

<p>What could be possible causes for this falling asleep behavioir? 
The page requires authentication (owin auth). Could it be that the logged on users security token has expired and the page reload renews it?</p>