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对象与它们一起使用?或者我是否错误地使用用户身份验证创建聊天?
谢谢你!答案 0 :(得分:5)
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"
});
答案 1 :(得分:4)
您需要使用authorization
。
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
});
答案 2 :(得分:-1)
在socket.io v1.0
及以上,您可以获得req
这样的对象
var req = socket.request;
var res = req.res;