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我试图将Express（3.x）与NowJS（主要是围绕Socket.io的包装）结合起来创建一个实时应用程序，首先要求您记录我承认Node是新手，但是我对每个软件包的工作方式都有很好的掌握。但是，从NowJS访问快速会话信息会让我觉得合适。通过XHR轮询的Socket.io未通过Cookie
问题似乎是因为我被迫使用XHR-Polling（使用Heroku作为主机平台），我无法轻松访问Socket.io身份验证方法中的cookie信息。在authFunction的以下代码中，“data.headers.cookie”未定义。以迂回的方式（在Now.js代码中），这会在nowjs.on（“connect”，...）回调中留下“this.user.cookie”为空（但不是未定义）。这反过来让我无法获取会话信息。
从阅读来看，似乎只有使用websocket才可以使用cookie。没有cookie，我不知道哪个用户正在调用服务器，除了为它们生成的随机标识符。
任何人都可以提出如何解决这个问题吗？在建立与Now.js服务器的连接后，是否需要手动从客户端发送cookie？
var app = express();
app.configure(function(){
app.set('port', process.env.PORT || 3000);
app.set('views', __dirname + '/views');
app.engine('html', consolidate.swig);
app.set('view engine', 'html');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(express.cookieParser());
app.use(express.session({ secret: "secrethere" , store: sessionStore}));
app.use(express.static(path.join(__dirname, 'public')));
app.use(app.router);
});
app.configure('development', function(){
app.use(express.errorHandler({dumpExceptions: true, showStack: true}));
});
//Map the routes
var routes = require('./routes/routes')(db);
app.get[...] //routes defined here
var server = http.createServer(app, {cookieKey: 'connect.sid'});
server.listen(app.get('port'), function(){
console.log("Express server listening on port " + app.get('port'));
});
var parseCookie = require('express/node_modules/connect').utils.parseCookie;
var authFunction = function (data, accept) {
// check if there's a cookie header
if (data.headers.cookie) {
// if there is, parse the cookie
data.cookie = parseCookie(data.headers.cookie);
// note that you will need to use the same key to grad the
// session id, as you specified in the Express setup.
data.sessionID = data.cookie['connect.sid'];
} else {
// if there isn't, turn down the connection with a message
// and leave the function.
return accept('No cookie transmitted.', false);
}
// accept the incoming connection
accept(null, true);
};
var everyone = nowjs.initialize(server, {socketio: {transports: ['xhr-polling', 'jsonp-polling'], authorization: authFunction}});
nowjs.on('connect', function (socket) {
//TODO - This will need to be based on the URL that is being visited, or
//similar to establish that users are viewing the same thing
var sid = unescape(this.user.cookie["connect.sid"]); //# you DO have to unescape the session id!
sessionStore.get(sid, function(err, sess){
console.log("That group who joined? his userId is " + sess.userId)
});
var newRoom = "group";//this.user.session;//.groupName;
var newGroup = nowjs.getGroup(newRoom);
this.now.serverRoom = newRoom;
newGroup.addUser(this.user.clientId);
});
编辑：当然，我宁愿喜欢这里最多的回答简单的解决方案：Session support in Now.js，但是，这并不为我工作了（可能）同样的原因 - 我的“cookie”是空的，不包含“connect.sid”键。