server.js

var app = require('express')()
  , server = require('http').createServer(app)
  , io = require('socket.io').listen(server,{log:false});
server.listen(888);
app.get('/’, function (req, res) {
res.sendfile(__dirname + ‘/index.html’);
});
io.sockets.on('connection’, function (socket) {
console.log('connection '+new Date());
socket.emit('news’, { hello: ‘world’ });
socket.on('my other event’, function (data) {
console.log(data);
});
socket.on('disconnect’, function () {
console.log('user disconnected '+new Date());
});
});

client.html

<script src="http://localhost:888/socket.io/socket.io.js"></script>
<script>
if (/Firefox/\s/.test(navigator.userAgent)){
var socket = io.connect("http://localhost:888",{transports:[‘xhr-polling’]});
} else if(/MSIE (\d+.\d+);/.test(navigator.userAgent)){
var socket = io.connect("http://localhost:888",{transports:[‘jsonp-polling’]});
} else {
var socket = io.connect(“http://localhost:888”);
}
socket.on('news’, function (data) {
//console.log(data);
document.write(data.hello);
socket.emit('my other event’, { my: ‘data’ });
});
</script>

客户端是apache+php的，在google浏览器一切正常，刷新和关闭都正常 但是在ie和ff能连接上并正常通信，但是在1分钟之内会自动触发disconnect事件，反而正常退出或刷新却不能触发disconnect事件，混乱了…求高手帮忙解答!!!