NodeJS socket IO stop emitting randomly?

Question

NodeJS socket IO stop emitting randomly?

I'm running Node 0.6.16 and all the modules are up to date at least according to npm (win7 x64). I could notice that, even if I have no disconnection occurring, but for some reason, after a while, I couldn't tell, maybe 1 hour, the browser doesn't receive any data. It appears to be more frequent on FF than on Chrome.

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

This never fires for that particular event (I mean it could happen but then I get the log and socket.io auto reconnects - In this case, nothing happens, it just stops working and this is the most frequent event).

So I don't know where to look. NodeJS still logs an heartbeat but for some reason, the connection is not going through. I am suspecting that, on tab change of (any?) browser, after a while, as the window / tab doesn't have focus anymore, socket.io stops receiving data ? I could be wrong and it could be not related to the focus, but this is my primary lead. Anyone else got any ideas?

Edit: client side is pretty straight forward :

socket = io.connect('http://xxx.xxx.xxx.xxx:8081', {secure:false, 'reconnect': true, 'reconnection delay': 500, 'max reconnection attempts': 10});      
            socket.on('connect', function(){console.log('connected')});
            socket.on('message', function(data){//do something);        

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

Edit2 : After updating to latest version of socket.io (1.2.1) and node v0.10.35 I still have the same issue. Even more surprising, I added the following piece of code in the client:

function checkSocket(){
    if(socket){
        if(!socket.connected){
            console.log('socket disconnected');
            clearInterval(intv);
        }
    }       
}

intv = setInterval(checkSocket, 1000);

While the function runs every second, it never logs that the socket is disconnected, even if it does not receive anything anymore and still being sent heartbeats..

Edit3: Ok it was on my server side code, some socket were being destroyed. Also updated to v1.x and forced reconnection.

javascript
node.js
socket.io

Answer 1

So since it seems I have no more issue, I thought I would share my back-end code. My issue I believe was that I was overwriting the socket.

var clients = {};
var app = require('https').createServer(options),
io = require('socket.io').listen(app);  
app.listen(8081);

io.sockets.on('connection', function(__socket) {
    var id = __socket.id;
    var ip = __socket.request.connection.remoteAddress;
    clients[id] = {socket:__socket, ip:ip}; 
    clients[id].socket.on('disconnect', function() {
        delete clients[id];     
   });
});

Hope this helps someone.