TypeError:无法调用方法'获取'在socket.handshake上未定义的

我正在尝试将socket.io代码从0.9v重建为1.x。Express和socket.io是最新版本。

因此，错误：处的Cannot call method 'get' of undefined

 io.on('connection', function(socket) {
            console.log(socket.handshake);
            var username = socket.handshake.user.get('username'); //<----here
            ......

这是我的代码：

module.exports = function(server) {
                var io = require('socket.io')(server);
                io.set('origins', 'localhost:*');
            //I changed set to use, but it's doesn't matter i think
                io.use(function(socket, next) {  
                    var handshake = socket.request;
                //io.set('authorization', function(handshake, callback) {
                    async.waterfall([
                        function(callback) {
                         handshake.cookies = cookie.parse(handshake.headers.cookie || '');
     var sidCookie = handshake.cookies[config.get('session:key')];
      var sid = connect.utils.parseSignedCookie(sidCookie, config.get('session:secret'));
      //var sid = cookieParser.signedCookie(sidCookie, config.get('session:secret'));
                            loadSession(sid, callback);
                        },  ...continue...

续：

function(session, callback) {
                            if (!session) {
                                callback(new HttpError(401, "No session"));
                            }
                            handshake.session = session;
                            loadUser(session, callback);
                        },
                        function(user, callback) {
                            if (!user) {
                                callback(new HttpError(403, "Anonymous session may not connect"));
                            }
                            handshake.user = user;
                            callback(null);
                        }
                    ], function(err) {.....});
                next();
                });
        io.on('connection', function(socket) { ... };

返回io；}；

好的，请帮帮我，谢谢！