Socket.IO 4.0.0
https://socket.io/blog/socket-io-4-release/
socket.io 4.0.0
https://github.com/socketio/socket.io/releases/tag/4.0.0
engine.io 5.0.0
https://github.com/socketio/engine.io/releases/tag/5.0.0
https://socket.io/blog/socket-io-4-release/
socket.io 4.0.0
https://github.com/socketio/socket.io/releases/tag/4.0.0
engine.io 5.0.0
https://github.com/socketio/engine.io/releases/tag/5.0.0