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设置会话并在 PHP 中使用它们真的很容易。但是我的网站需要处理 WebSockets。我在 node.js 中设置会话时遇到问题。我可以在不使用会话的情况下轻松推送数据，它可以正常工作，但是当打开多个选项卡时，会创建新的 socket.id 并且之前打开的选项卡将无法正常运行。所以我一直在处理会话并且在访问会话存储时遇到了问题，它的日志会话没有被抓取。我也尝试过 session.load 但没有运气

如何获取会话对象并以打开其他选项卡不会影响功能并将数据从服务器推送到所有选项卡上的客户端的方式使用它？

var express=require('express');
var http = require('http');
var io = require('socket.io');
var cookie = require("cookie");
var connect = require("connect"),
MemoryStore = express.session.MemoryStore,
sessionStore = new MemoryStore();

var app = express();

app.configure(function () {
    app.use(express.cookieParser());
    app.use(express.session({store: sessionStore
        , secret: 'secret'
        , key: 'express.sid'}));
    app.use(function (req, res) {
        res.end('<h2>Hello, your session id is ' + req.sessionID + '</h2>');
    });
});

server = http.createServer(app);
server.listen(3000);

sio = io.listen(server);

var Session = require('connect').middleware.session.Session;

sio.set('authorization', function (data, accept) {
    // check if there's a cookie header
    if (data.headers.cookie) {
        // if there is, parse the cookie
        data.cookie = connect.utils.parseSignedCookies(cookie.parse(data.headers.cookie),'secret');
        // 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['express.sid'];
        sessionStore.get(data.sessionID, function (err, session) {
            if (err || !session) {
                // if we cannot grab a session, turn down the connection
                console.log("session not grabbed");
                accept('Error', false);
            } else {
                // save the session data and accept the connection
                console.log("session grabbed");
                data.session = session;
                accept(null, true);
            }
        });
    } 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);
});

sio.sockets.on('connection', function (socket) {
    console.log('A socket with sessionID ' + socket.handshake.sessionID 
        + ' connected!');
});
4

1 回答 1

2

看看这篇文章：使用 Socket.IO 的基于会话的授权

您的代码工作正常，但需要 2 项改进才能完成您想要的操作（从服务器向客户端发送会话数据）：

  1. 它仅sessionID在授权期间提取
  2. sessionID它在连接期间通过此从存储中提取会话数据，您可以在间隔内将数据从服务器发送到客户端。

这是改进的代码：

var express = require('express');
var connect = require('connect');
var cookie = require('cookie');
var sessionStore = new express.session.MemoryStore();    

var app = express();    

app.use(express.logger('dev'));
app.use(express.cookieParser());
app.use(express.session({store: sessionStore, secret: "secret", key: 'express.sid'}));
// web page
app.use(express.static('public'));    

app.get('/', function(req, res) {
  var body = '';
  if (req.session.views) {
    ++req.session.views;
  } else {
    req.session.views = 1;
    body += '<p>First time visiting? view this page in several browsers :)</p>';
  }
  res.send(body + '<p>viewed <strong>' + req.session.views + '</strong> times.</p>');
});    

var sio = require('socket.io').listen(app.listen(3000));   

sio.set('authorization', function (data, accept) {
    // check if there's a cookie header
    if (data.headers.cookie) {
        // if there is, parse the cookie
        var rawCookies = cookie.parse(data.headers.cookie);
        data.sessionID = connect.utils.parseSignedCookie(rawCookies['express.sid'],'secret');    
        // it checks if the session id is unsigned successfully
        if (data.sessionID == rawCookies['express.sid']) {
            accept('cookie is invalid', false);
        }
    } 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);
});    

sio.sockets.on('connection', function (socket) {
    //console.log(socket);
    console.log('A socket with sessionID ' + socket.handshake.sessionID + ' connected!');
    // it sets data every 5 seconds
    var handle = setInterval(function() {
        sessionStore.get(socket.handshake.sessionID, function (err, data) {
            if (err || !data) {
                console.log('no session data yet');
            } else {
                socket.emit('views', data);
            }
        });
    }, 5000);    

    socket.on('disconnect', function() {
        clearInterval(handle);
    });
});

然后您可以在public/client.htmlat下创建一个客户端页面，http://localhost:3000/client.html以查看从以下位置填充的会话数据http://localhost:3000：

<html>
<head>
    <script src="/socket.io/socket.io.js" type="text/javascript"></script>
    <script type="text/javascript">
        tick = io.connect('http://localhost:3000/');
        tick.on('data', function (data) {
            console.log(data);
        });

        tick.on('views', function (data) {
            document.getElementById('views').innerText = data.views;
        });

        tick.on('error', function (reason){
          console.error('Unable to connect Socket.IO', reason);
        });

        tick.on('connect', function (){
          console.info('successfully established a working and authorized connection');
        });
    </script>
</head>
<body>
    Open the browser console to see tick-tocks!
    <p>This session is viewed <b><span id="views"></span></b> times.</p>
</body>

于 2013-12-20T16:32:14.947 回答