会话ID显示为未定义node.js

Question

js，express，redis（用于内存存储）和socket.io。我正在尝试设置通过身份验证的套接字调用以便与每个用户的套接字匹配。我有这样的代码，除了某些原因会话ID显示为未定义并获取错误加载会话（握手错误）之外，大部分都会这样做。

下面是代码：

var io = require('socket.io'); 
var notificationsN = io.listen(server); 
var RedisStore = require('connect-redis')(express); 
var redis = require("redis").createClient(); 
var cookie = require('cookie'); 
var session_store = new RedisStore({client: redis}); 

app.use(express.session({ 
     secret: "secret", 
     store: new RedisStore({ host: 'localhost', port: 3000, client: redis }) 
    })); 
notificationsN.configure(function() { 
    notificationsN.set('authorization', function(data, accept) { 

    console.log('data below'); 
    console.log(data); 
    console.log('data sid below'); 
    console.log(data.sessionID); 
    if(!data.headers.cookie) return accept(new Error('No user cookie found'), true); 
     data.cookie = cookie.parse(data.headers.cookie, { secure: true }); 
     data.cookie = connect.utils.parseSignedCookies(data.cookie, config.session.secret); 
     data.cookie = connect.utils.parseJSONCookies(data.cookie); 
     data.sessionID = data.cookie[config.session.key]; 
     session_store.load(data.sessionID, function(err, session){ 
     if(err || !session) return accept(new Error('Error loading session'), false); 
     data.session = session; 
     return accept(null, true); 
     }); 
     console.log(data); 

    }) 
}) 


notificationsN.on('connection', function(socket) { 
socket.on('message', function(msg) { 
     console.log(msg); 
    }); 

    socket.on('disconnect', function() { 
     console.log('disconnecting from redis'); 

    }); 

    }); 

以下是我找回从console.log(data)：

{ headers: 
    { host: 'localhost:3000', 
    connection: 'keep-alive', 
    'cache-control': 'max-age=0', 
    'user-agent': 'Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTM 
L, like Gecko) Chrome/29.0.1547.57 Safari/537.36', 
    accept: '*/*', 
    referer: 'http://localhost:3000/userProfile', 
    'accept-encoding': 'gzip,deflate,sdch', 
    'accept-language': 'en-US,en;q=0.8', 
    cookie: 'connect.sid=crazyvalue; __atuvc=crazyvalue; userid=crazyvalue' }, 
    address: { address: 'ip', port: port}, 
    time: 'Fri Aug 30 2013 15:50:31 GMT-0400 (Eastern Daylight Time)', 
    query: { t: '1377892231624' }, 
    url: '/socket.io/1/?t=1377892231624', 
    xdomain: false, 
    secure: undefined, 
    issued: 1377892231630, 
    cookie: {}, 
    sessionID: undefined } 

所以不知道为什么，会话ID是不确定的和安全的节目为未定义。

Answer 1

session_store.load 

是异步的。你需要将你的console.log移动到这个函数的回调中。

session_store.load(data.sessionID, function(err, session){ 
    if(err || !session) return accept(new Error('Error loading session'), false); 
    data.session = session; 
    console.log(data);//Move it here. 
    return accept(null, true); //This return statement is doing nothing useful 
});