如何在node.js服务器上的PHP Web服务器和Socket.io之间创建握手？

Question

我在服务器10.0.4.18上的端口8020上运行了node.js 4.0上的websocket。我使用socket.io v1.3，express和express-session实现了我的websocket。

项目定义

我需要能够在socket.io中为从PHP应用程序连接到它的每个用户创建一个会话。 在用户发送第一个HTTP请求之后，我将使用将从PHP传递到socket.io以及HTTP请求的令牌对它们进行身份验证。

用户通过身份验证后，我需要在socket.io会话中保存一些个人数据，以便以后重用。 每次用户刷新PHP应用程序时，socket.io都需要知道已创建的会话数据。

问题

每次用户重新加载/刷新PHP页面“他/她从哪里连接”时，会话数据都会丢失。 服务器无法知道该连接属于先前创建的会话XYZ。

我不确定如何在PHP和node.js之间创建握手，其中两个服务器可以交换唯一数据以将socket.io会话绑定到。

仔细看看这个问题

我在浏览器中打开了这个链接https://10.0.4.18:8020/set/MikeA 。 “这根据路由代码直接从node.js为我创建了一个会话”

然后我使用PHP连接到websocket，现在我可以看到会话没有问题！ 我能够在浏览器中打开多个选项卡，并且会按预期进行相同的会话。

它这次工作的原因是因为网址https://10.0.4.18:8020/set/MikeA建立了一个会话并将其绑定在我的浏览器和会话之间，从那里我能够从socket读取/写入我的会话。我使用express-socket.io-session包https://www.npmjs.com/package/express-socket.io-session 。

但是如果我不手动使用url创建会话，则会话仅适用于一个页面加载。 每次重新加载页面时，会话都会被破坏，就像它从未存在过一样！

题

当从socket.io连接时，我需要通过https://10.0.4.18:8020/set/MikeA连接到websocket时开发相同的行为。

如何在PHP服务器和socket.io之间建立握手，其中两个服务器可以在每次重新加载PHP页面或打开新的浏览器选项卡时将会话数据绑定到正确的用户？

这是我的websocket代码

var app = require('express')(),
    https = require('https'),
    fs = require('fs'),
    session = require('express-session'),
    sharedsession = require("express-socket.io-session"),
    fileStore = require('session-file-store')(session),
    base64url = require('base64url'),
    cookieParser = require("cookie-parser"),
    env = require('./modules/config');


var server = https.createServer(
    {
        key: fs.readFileSync('certs/key.pem'),
        cert: fs.readFileSync('certs/cert.pem')
    }, app).listen(env.socket.port, env.socket.host, function () {
    console.log('\033[2J');
    console.log('Websocket is running at https://%s:%s', server.address().address, server.address().port);
});

var io = require('socket.io')(server);

var icwsReq = require('./modules/icws/request.js'),
    icwsConn = require('./modules/icws/connection.js'),
    icwsInter = require('./modules/icws/interactions.js'),
    sessionValidator = require('./modules/validator.js');

var icwsRequest = new icwsReq();
var sessionChecker = new sessionValidator();

var sessionStoreFile = new fileStore({path: './tmp/sessions'});

var clients = {};

var sessionOptions = {
        store: sessionStoreFile,
        secret: env.session.secret,
        name: env.session.name,
        rolling: true,
        saveUninitialized: false,
        resave: true,
        unset: 'keep',
        cookie: {
            maxAge: 60 * 60 * 1000
        }
    };

var sessionMiddleware = session(sessionOptions);

app.use(sessionMiddleware); // session support for the app


//Set access control headers on every express route.
app.use(function (req, res, next){
    res.setHeader('Access-Control-Allow-Origin', '*');
    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With, Content-Type');
    next();
});


// Use shared session middleware for socket.io
io.use(sharedsession(sessionMiddleware, {
    autoSave: true
})); 

//Middleware for authorizing a user before establishing a connection
io.use(function(socket, next) {

    var myIP = socket.request.socket.remoteAddress || '';
    var token = socket.handshake.query.tokenId || '';
    var session = socket.handshake.session || {};

    if(!session && !token){
        console.log('Log: No session and no token!');
        return next(new Error('No tken/session found'));
    }

    if(!token){
        console.log('Log: token was not found');
        return next(new Error('Token not found'));
    }

    //SessionID should be defined on a page reload
    console.log('IP Address: ' + myIP + '      SessionID: ' + socket.handshake.sessionID);

    //allow any user that is authorized
    if(session && session.autherized && token == session.token){
        console.log('Log: you are good to go');
        return next(new Error('You are good to go'));
    }

    //if the client changed their token "client logged out"
    //terminate the open session before opening a new one
    if (session.autherized && token != session.token){

    var decodedToken = base64url.decode(token);

    sessionChecker.validateData(decodedToken, myIP, env.session.duration, function(isValid, icws){

        if(!isValid){
            console.log('Log: token could not be validated!');
            return next(new Error('Token could not be validated!'));
        }

        session.authorized = true;
        session.icwsServer = icws.host;
        session.icwsPort = icws.port;
        session.token = token;
        session.icwsSessionId = null;
        session.icwsToken = null;

        icwsRequest.setConnection(icws.host, icws.port);
        var icwsConnection = new icwsConn(icwsRequest);

        session.save(function(){
            console.log('Log: new connection to websocket!');
            return next();
        });
    });

});


io.on('connection', function (socket) { 

    console.log('Connection is validated and ready for action!');

    var socketId = socket.id;

    if(!socket.handshake.sessionID){
        console.log('sessionId was not found');
        return false;
    }

    var sessionID = socket.handshake.sessionID;
    var userCons = clients[sessionID] || [];

    //Add this socket to the user's connection
    if(userCons.indexOf(socketId) == -1){
        userCons.push(socketId);
    }

    clients[sessionID] = userCons;

    socket.on('chat', function(msg){

        for (var key in clients[sessionID]) {
          if (clients[sessionID].hasOwnProperty(key)) {
            var id = clients[sessionID][key];
            console.log('Client Said: ' + msg);
            io.to(id).emit('chat', {message: 'Server Said: ' + msg});
          }
        }
    });


    socket.on('disconnect', function(msg){
        console.log('Closing sessionID: ' + sessionID);
        var userCons = clients[sessionID] || [];

        var index = userCons.indexOf(socketId);

        if(index > -1){
            userCons.splice(index, 1);
            console.log('Removed Disconnect Message: ' + msg);
        } else {
            console.log('Disconnect Message: ' + msg);
        }

    }); 

    socket.on('error', function(msg){
        console.log('Error Message: ' + msg);
    }); 

});


app.get('/', function (req, res) {
    res.send('welcome: ' + req.sessionID);
});

app.get('/read', function (req, res) {
    res.send('welcome: ' + req.session.name);
});

app.get('/set/:name', function (req, res) {
    req.session.name = req.params.name;
    res.send('welcome: ' + req.session.name);
});

以下是我从PHP服务器连接到websocket的方法

<!doctype html>
<html lang="en-US">
  <head>
    <title>Socket.IO chat</title>
    <meta charset="utf-8">
    <style>
      * { margin: 0; padding: 0; box-sizing: border-box; }
      body { font: 13px Helvetica, Arial; }
      form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; }
      form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; }
      form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; }
      #messages { list-style-type: none; margin: 0; padding: 0; }
      #messages li { padding: 5px 10px; }
      #messages li:nth-child(odd) { background: #eee; }
    </style>

    <script src="https://10.0.4.18:8020/socket.io/socket.io.js"></script>
    <script type="text/javascript" src="/js/jquery-2.1.0.min.js"></script>
    <script>

        $(function(){
            var socket = io.connect('https://10.0.4.18:8020', {secure: true, port: 8020,  query : 'PHP generated token that will be used to authenticate the user from node.js'});

           //When the "send" button is clicked
            $('#f').click(function(e){
                e.preventDefault();
                var message = $('#m').val().trim();
                if( message  == ''){
                    return false;
                }

                socket.emit('chat', message);
                $('#m').val('');
            });

            socket.on('chat', function(msg){
                $('#messages').append($('<li>').text(msg.message));
            });

        });

    </script>

  </head>
  <body>
    <ul id="messages"></ul>
    <form action="" id="f">
      <input id="m" autocomplete="off" /><button>Send</button>
    </form>
  </body>
</html>

Answer 1

将令牌存储在浏览器中，并将其与来自php的每个请求一起发送，其授权持有者如下所示：

Authorization: Bearer token

因此，每当node.js服务器获得请求时，您都可以比较用户对应的令牌并获取数据。

您可以将userid和令牌之间的关系存储在表中的到期日期，并在每次登录时刷新令牌。

此外，如果您不想使用表，可以使用JWT将数据存储在令牌中

你可以在这里找到更多信息：

http://jwt.io/