WebSocket connection error using socket.io

Question

Trying to run node.js and socket.io for the first time but I'm keep getting this error:

WebSocket connection to 
'ws://localhost:8080/socket.io/1/websocket/1826726211257272865'   
failed: Connection closed before receiving a handshake response 

in every example what I try and I can't figure out why. Any ideas ?

Answer 1

就我而言，问题是我没有安装Express Web框架。