Express - socket.io - 阅读会话
我使用 Express 和 socket.io。
当您使用特快专递创建会话时。单击按钮并使用 Ajax 和 POST 方法(登录)保存会话。
app.post('/login', function(req, res){
req.session.loginid = req.body.lgnid;
});
在socket.io中它无法读取。
我的源代码:
var express = require('express');
var app = express.createServer();
var io = require('socket.io').listen(app);
var MemoryStore = express.session.MemoryStore;
var sessionStore = new MemoryStore();
var parseCookie = require('connect').utils.parseCookie;
var Session = require('connect').middleware.session.Session;
var stylus = require('stylus');
app.use(express.bodyParser());
app.use(express.cookieParser());
app.use(express.session({store: sessionStore
, secret: 'secret'
, key: 'express.sid'}));
app.use(stylus.middleware({ src: __dirname + '/public', compile: compile }))
app.use(express.static(__dirname + '/public'));
app.set('views', __dirname);
// disable layout
app.set("view options", {layout: false});
// make a custom html template
app.register('.html', {
compile: function(str, options){
return function(locals){
return str;
};
}
});
function compile (str, path) {
return stylus(str)
.set('filename', path)
.use(nib());
};
var Session = require('connect').middleware.session.Session;
sio.set('authorization', function (data, accept) {
if (data.headers.cookie) {
data.cookie = parseCookie(data.headers.cookie);
data.sessionID = data.cookie['express.sid'];
// save the session store to the data object
// (as required by the Session constructor)
data.sessionStore = sessionStore;
sessionStore.get(data.sessionID, function (err, session) {
if (err || !session) {
accept('Error', false);
} else {
// create a session object, passing data as request and our
// just acquired session data
data.session = new Session(data, session);
accept(null, true);
}
});
} else {
return accept('No cookie transmitted.', false);
}
});
如何从sessionStore加载和保存数据?
io.sockets.on('connection', function (socket) {
var hs = socket.handshake;
console.log('Session : ' + hs.session.loginid + '); //Session : undefined
});
I use Express and socket.io.
When you create a session with the express - post. Click the button and using Ajax and the POST method (login), I save a session.
app.post('/login', function(req, res){
req.session.loginid = req.body.lgnid;
});
In socket.io it can not read.
My source code:
var express = require('express');
var app = express.createServer();
var io = require('socket.io').listen(app);
var MemoryStore = express.session.MemoryStore;
var sessionStore = new MemoryStore();
var parseCookie = require('connect').utils.parseCookie;
var Session = require('connect').middleware.session.Session;
var stylus = require('stylus');
app.use(express.bodyParser());
app.use(express.cookieParser());
app.use(express.session({store: sessionStore
, secret: 'secret'
, key: 'express.sid'}));
app.use(stylus.middleware({ src: __dirname + '/public', compile: compile }))
app.use(express.static(__dirname + '/public'));
app.set('views', __dirname);
// disable layout
app.set("view options", {layout: false});
// make a custom html template
app.register('.html', {
compile: function(str, options){
return function(locals){
return str;
};
}
});
function compile (str, path) {
return stylus(str)
.set('filename', path)
.use(nib());
};
var Session = require('connect').middleware.session.Session;
sio.set('authorization', function (data, accept) {
if (data.headers.cookie) {
data.cookie = parseCookie(data.headers.cookie);
data.sessionID = data.cookie['express.sid'];
// save the session store to the data object
// (as required by the Session constructor)
data.sessionStore = sessionStore;
sessionStore.get(data.sessionID, function (err, session) {
if (err || !session) {
accept('Error', false);
} else {
// create a session object, passing data as request and our
// just acquired session data
data.session = new Session(data, session);
accept(null, true);
}
});
} else {
return accept('No cookie transmitted.', false);
}
});
How to load and save data from sessionStore?
io.sockets.on('connection', function (socket) {
var hs = socket.handshake;
console.log('Session : ' + hs.session.loginid + '); //Session : undefined
});
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实际上(至少根据我的经验)实现此目的的推荐方法是放弃
sessionStore.get
函数并转而使用sessionStore.load
- 区别在于使用 load回调会被赋予一个会话实例,而不必自己创建一个。区别只是简单地获取您的代码片段:并将其更改为:
从那里,您应该能够在尝试时访问会话,例如
socket.handshake.session
,但是在处理会话时如果您在套接字事件中进行更改,则必须自己手动保存会话。如果添加/删除内容,则必须:session.save([callback])
。我意识到这并不是一个很好的答案,因为我告诉你大致做你已经做的事情,但这现在对我来说适用于 Express
2.5.8
和 Socket.IO0.9.6。
A recommended way to achieve this actually (at least in my experience) is to forgo the
sessionStore.get
function and go forsessionStore.load
instead - the difference is that with load the callback is given a session instance instead of having to create one yourself. The difference is simply taking your snippet:And changing it to:
And from there, you should be able to access the session as you attempt, such as
socket.handshake.session
, however when dealing with the session if you make changes in a socket event you have to manually save the session yourself. If you add/remove things you must:session.save([callback])
.I realize this isn't much of an answer since I'm telling you to do roughly what you already are but this is working for me right now with Express
2.5.8
and Socket.IO0.9.6
.