请检查您的Express版本。Express最近更新为3.0alpha哪个API已更改，如果3.0，您可以将代码更改为喜欢这个：

Please check your Express version. Express recently is updated to 3.0alpha which API was changed. If 3.0 you can change your code to something likes this:

var express = require('express')
  , http = require('http');

var app = express();
var server = http.createServer(app);
var io = require('socket.io').listen(server);

...

server.listen(8000);

连接相同的问题： https://github.com/senchalabs/连接/问题/ 500＃issuecomment-4620773