I was inspecting the stackoverflow pages for curiosity and noticed that interesting url: ws://sockets-se.or.stackexchange.com/

I would like to know more about the ws protocol but I don’t even know how to start searching because searching for ws or ws protocol is not showing me the results that I was expecting…
What is this protocol? Can someone point me to a direction?
ws:This is the new URL schema for WebSocket connections. There is alsowss:for secure WebSocket connection the same wayhttps:is used for secure HTTP connections.By Definition
The WebSocket specification defines an API establishing “socket” connections between a web browser and a server.
In plain words
There is an persistent connection between the client and the server and both parties can start sending data at any time. That is a full-duplex communication channels over a single TCP connection.
Take a look here for API and here for web sockets basics and
here for a simple live demo of it.