Windows sleep mode can freeze the local server

Steps to reproduce from forum:

> I open the server
> Then I connect to the server
> Until there everything ok.
> I can play everything works perfect
> If I disconnect and try to re-enter. It does not connect but does not throw any error. It stays like "thinking"
> I go to the window where the server logs appear.
> I press enter on the same window. After that I instantly connect to the server.
> As if it were in a "sleep" mode