시작에 앞서 아래 두 주소는 socket.io와 python-socketio의 공식문서 사이트이다 https://socket.io/ Socket.IO Reliable Rest assured! In case the WebSocket connection is not possible, it will fall back to HTTP long-polling. And if the connection is lost, the client will automatically try to reconnect. socket.io https://python-socketio.readthedocs.io/en/stable/ python-socketio — python-socketio documentation python-socketi..