我正在创建聊天应用程序,使用nodejs(0.8.15),express(> 3.0)框架和
mongodb用于注册用户.
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：如何在上面的代码聊天时获取res和req对象与它们一起工作？或者我错误的方式与用户身份验证创建聊天？
谢谢！
解决方法
你不能在socket.io处理程序中获取res和req对象,因为它们根本不存在 – socket.io不是普通的http.
相反,您可以做的是对用户进行身份验证并为其分配会话身份验证令牌(一个标识他们已登录的密钥以及他们是谁).
然后客户端可以发送auth令牌以及每个socket.io消息,服务器端处理程序可以只检查数据库中密钥的有效性：
io.sockets.on('connection',function (socket) {
socket.on('start-chat',function(message) {
if (message.auth_token)
//Verify the auth_token with the database of your choice here!
else
//Return an error message "Not Authenticated"
});
