If the server's offline, the client won't notice anything. The client service will attempt to reconnect and when it doesn't reach the server, it will attempt to connect again after a certain interval has passed. That interval varies, but should cap out at roughly 30 minutes between attempts. A user on any Guest machine would be completely unaware of this process.

With that said, however, whenever you do bring your server back online, it may take a little while for all of your clients to reconnect (for the reason mentioned above).

Edited by user Friday, January 9, 2015 3:33:10 PM(UTC)  | Reason: Not specified

Well, actually, after looking at the code it looks like the cap between intervals is 1800000 milliseconds (30 minutes) and not the 1.5 hours I originally thought. I'll edit my original post so that no one gets confused.

Also, the interval starts at 2 seconds and then increases at a rate of 1.5. Since it's a 30 minute cap, I would guess that the interval would be 30 minutes after 8 hours, although you're welcome to do the math to double-check.