使用 Express + Socket.IO 搭建的多人聊天室
教程见 wiki
使用 Express + Socket.IO 搭建的多人聊天室
使用 Express + Socket.IO 搭建的多人聊天室
教程见 wiki
app.get('/', function (req, res) {
if (req.cookies.user ==null) {
res.redirect('/signin');
} else {
res.sendfile('views/index.html');
}
});
中的req.cookies.user == null得改为req.cookies.user == 'undefined'
不然启动后默认当然用户就是'undefined'了
本人多年前写的该教程,代码有不少疏漏或需要优化的地方,鉴于很多初学者依然使用本教程,近期将会彻底翻新一遍。
原作者的socket.io 的版本较低,在目前较新的版本中,是报错的。
1.0 以后的版本是:io.sockets.connected[socketid].emit();
所以,要预先保存一个user 到 socketid的映射。
运行的时候发现socket.io需要是0.9.*版本以下的(包括此版本)否则会报错。错误即为标题所示。解决办法在(这里)[https://github.com/socketio/socket.io/issues/1544],(自己改了没成功)
你写的非常好,浅显易懂。
如果我想把它升级,增加多聊天室的功能,即用户可以选择加入某个聊天室的话,关键点是什么?可否指点一二?
TypeError: require(...).listen is not a function
我的代码在一切运行成功的情况下,出现了客户端的emit事件在后端on事件里接收到的全都是编码不符的乱码问题。请问你有没有遇到过这种情况?
如果users用数组的话,每当一个用户下线时,如果此时恰巧有用户上线,那么users的长度就会发生变化,因此待删除的用户在数组中的位置也会发生改变,这样容易误删用户。
改用对象保存:
var users = {};
function User(name) {
this.name = name;
}
上线时:
users[data.name] = new User(data.name);
下线时:
delete user[socket.name]
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