Adding an option to add color variations to screen blanking

ID: FR10R04030 Priority: Cosmetic
Products: NoMachine Server Target: 7
Status: Approved  

NoMachine already implements the option to blank the remote screen upon connection:

https://www.nomachine.com/FR09I02610
Supporting the blank screen feature during a remote desktop session

The desktop of the machine connected to the server shows a black screen and anyone physically present in front of the monitor cannot understand if the monitor is black because the desktop is being accessed remotely or because it is in sleep mode or for any other reason.

A new option will be added to make clear when the blanking feature is active through a fading effect (or pulse) between a dark and a light color.

To enable it the following line will have to be added to the node.cfg configuration file on the server:
DisplayServerExtraOption "-pulsedblanking”