相关疑难解决方法(0)

我有这个简单的node.js Servercode使用socket.io(1.5):

var io = require('socket.io').listen(8080);

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

    console.log(' %s sockets connected', io.engine.clientsCount);

    socket.on('disconnect', function() {
        console.log("disconnect: ", socket.id);
    });
});

如果我运行此代码并按F5几次,在某些情况下会创建新连接,然后再断开旧连接.过了一段时间,我认为它的Heartbeat Timout,所有的连接将被关闭.看结果:

 2 sockets connected
 3 sockets connected
 4 sockets connected
 5 sockets connected
 6 sockets connected
 7 sockets connected
 8 sockets connected
 9 sockets connected
 10 sockets connected
 11 sockets connected
disconnect:  0h_9pkbAaE3ftKT9AAAL
 11 sockets connected
 12 sockets connected
 13 sockets connected
 14 sockets connected
disconnect:  oB4HQRCOY1UIvvZkAAAP
 14 sockets connected
 15 sockets connected
disconnect:  LiIN0oDVoqbePgxFAAAR
 15 sockets …

我们可以跟踪此代码是建立还是断开连接

console.log('a user connected');
    socket.on('disconnect', function () {
        console.log('user disconnected');
    });

好吧,很好.但是我们如何确定用户连接或脱机的用户.我的客户端是用户编写的,PHP/HTML所以他们有一个用户ID.