Ensure iframe, even at startup is always loaded
Ensure iframe, even at startup is always loaded

Even if this.async is too fast sometimes. We want to connect to the websocket
and potentially already receive a page change order. If that happens too
quickly, we don't have the iframe reloading its new src.
Also, that enables us to show up current IP for 5s

ubuntu/booth-demo-manager,ubuntu/booth-demo-manager,ubuntu/booth-demo-manager,ubuntu/booth-demo-manager