Disables websockets
This is a script that you can use to enable or disable WebSockets. Useful for developing websites that use WebSockets, when you want to test the case where a connection cannot be established.
Heavily inspired by the code from this Stack Overflow answer: https://stackoverflow.com/questions/30912854/is-it-possible-to-temporarily-disable-a-websockets-connection-in-a-local-server
