Very simple .Net Framework (4.7.2) console application that launches a websocket server at a configurable address that will then output to the console any client message as well when they connect as well as disconnect.
To configure the address the websocket server uses, change it in the projects App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<appSettings>
<add key="WSUrl" value="ws://127.0.0.1:4486" />