Add some kind of password to the client #4
Description
There needs to be a password, for the display connection.
It can be a simple 8-character PID string like e.g. VNC uses ?
Setting a random string at start up, makes it harder for others to access.
Also it needs to be able to choose listen address, like 127.0.0.1:8080.
These should be input to the server program, but the password should not be a parameter.
One alternative is to take a file as input, and then read the password from this file instead.
See this for inspiration:
https://novnc.com/ (shows a password prompt, when the server requests authentication)