Seeing Chrome's resources, some magic happens at ws://indutny.com/socket.io/1/websocket/1315565259493660447 What does ws protocol do exactly? I can read somet

Seeing Chrome's resources, some magic happens at ws://indutny.com/socket.io/1/websocket/1315565259493660447 What does ws protocol do exactly? I can read something on wikipedia, but it is more confusing than clarifying