【发布时间】：2013-10-12 06:05:41
【问题描述】：
我有一个 node express 服务器，我用它作为后端来支持我网站上的即时聊天功能。我遇到的问题是当有人关闭他们的浏览器时，他们的状态不会在他们朋友的好友列表中更新为“离线”。我知道节点中有一个名为 req.on('close', function(){}); 的函数但我只是不确定如何将它包含在我的服务器文件中。任何正确方向的提示将不胜感激。这是我认为相关的快速服务器代码的 sn-p：
var app = express();
app.use(express.methodOverride());
app.use(express.cookieParser());
app.use(express.bodyParser());
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
next();
});
app.use(require('./middleware/im')({
maxAge: 60 * 1000,
reapInterval: 60 * 1000,
authentication: require('./libs/authentication/' + AUTH_LIBRARY)
}));
app.set('root', __dirname);
// 监听器端点；在中间件中处理 app.get('/listen', function(){});
app.post('/message', function(req, res) {
res.find(req.body['to'], function(user) {
if(!user)
return res.send(new packages.Error('not online'));
res.message(user, new packages.Message(
req.session.data('username'),
req.body.body
));
});
});
app.post('/message/typing', function(req, res) {
if(~packages.TYPING_STATES.indexOf('typing' + req.body['state'])) {
res.find(req.body['to'], function(user) {
if(user) {
res.message(user, new packages.Status(
req.session.data('username'),
'typing' + req.body.state
));
}
// Typing updates do not receive confirmations,
// as they are not important enough.
res.send('');
});
} else {
res.send(new packages.Error('invalid state'));
}
});
app.post('/status', function(req, res) {
if(~packages.STATUSES.indexOf(req.body['status'])) {
res.status(req.body.status, req.body.message);
res.send(new packages.Success('status updated'));
} else {
res.send(new packages.Error('invalid status'));
}
});
app.post('/clear', function(req, res) {
app.use(require('./middleware/im')({
clear: req.sessionID,
maxAge: 60 * 1000,
reapInterval: 60 * 1000,
authentication: require('./libs/authentication/' + AUTH_LIBRARY)
}));
req.sessionID = null;
res.send(new packages.Success('cleared session'));
app.use(require('./middleware/im')({
clear: 0,
maxAge: 60 * 1000,
reapInterval: 60 * 1000,
authentication: require('./libs/authentication/' + AUTH_LIBRARY)
}));
});
app.post('/online', function(req, res) {
var d = new Date();
var n = d.getTime() + 60;
req.sessionID.expires = n;
res.status(req.body.status, 'available');
res.send(new packages.Success('Online'));
});
app.post('/signoff', function(req, res) {
res.signOff();
res.send(new packages.Success('goodbye'));
});
https.createServer(options, app).listen(8000);
【问题讨论】：
标签： javascript express