nodejs，socket.io：如何从套接字函数获得请求和响应？

Question

我正在为注册用户创建聊天应用程序，使用nodejs(0.8.15)、express(>3.0)框架和mongodb。

var express = require('express')
  , http = require('http')
  , path = require('path')
  , io = require('socket.io');

var app = express()
  , server = http.createServer(app)
  , io = io.listen(server);

    app.configure(function() {
      app.set('port', process.env.PORT || 3000);
      app.set('views', __dirname + '/views');
      app.set('view engine', 'ejs');
      app.use(express.favicon());
      app.use(express.logger('dev'));
      app.use(express.bodyParser());
      app.use(express.methodOverride());
      app.use(express.cookieParser('secret'));
      app.use(express.session({cookie: {maxAge: 60000*100}}));
      app.use(app.router);
      app.use(express.static(path.join(__dirname, 'public')));
    });

    app.configure('development', function() {
      app.use(express.errorHandler());
    });

    app.get('/chat', function(req, res) {
        res.render('chat');
    });

 server.listen(app.get('port'), function() {
    console.log("Express server listening on port " + app.get('port'));
  });

 io.sockets.on('connection', function (socket) {
    socket.on('start-chat', function() {
         // here i need to know req and res
         // for example, i need to write:
         // socket.username = req.session.username;
    });
 });

问：如何让res和req对象在像上面的代码一样聊天时与它们一起工作？还是我在与用户Auth创建聊天时走错了路？

Answer 1

您需要使用授权。

var socketIO = require('socket.io').listen(port);
socketIO.set('authorization', function(handshakeData, cb) {
   //use handshakeData to authorize this connection
   //Node.js style "cb". ie: if auth is not successful, then cb('Not Successful');
   //else cb(null, true); //2nd param "true" matters, i guess!!
});

socketIO.on('connection', function (socket) {
   //do your usual stuff here
});