Long polling with node.js(express)?

Question

Node.js

I'm trying to implement long polling in node js. It works, but it's crooked. The problem is that most of the polling requests do not receive a response from the server. Already scratched my head why it doesn't work.
The idea is this:
Listeners are hung on game events, a res-object is bound to the listener's callback.
The browser keeps the request open until it receives a response, the game must keep listeners with the Res of these requests until it receives an event signal and the callback is fired.
But such a thing happens consistently: the Ajax request hangs in the browser, the event has passed, but the browser has not received a response.
game - an instance of the backbone model
I would be very grateful for the help.

app.all('/game/:game_id/update', function(req, res){
    var gameId = req.param('game_id');
    var game = games.get(gameId);
    if (!game){
        res.send('No game', 404);
    }

    var client = res;
    game.on('game:endTurn game:start game:startTurn', function(){
        this.json({update: true});
        game.off(null, null, this);
    }, client);

//    //через 60 секунд сбросить
//    setTimeout(function(){
//        game.off(null, null, this);
//    }, 60000)
});

Answer 1

thanks for the replies, looks like it was jquery caching

    function gamePolling(){
        $.ajax({
            url: "/game/<%=game.id%>/update",
            dataType: 'json',
            cache: false,
            success: function(data){
                if (data.update == true){
                    window.location.reload();
                }
                else{
                    gamePolling();
                }
            },
            error: function(data, type){
                gamePolling();
            }
        });
    }

Answer 2

Why don't you try socket.io ?

Answer 3

This, as far as I understand, is the client code. Maybe the problem is in the server side? Maybe he doesn't send anything at all?

Answer 4

Check the behavior of sessions, maybe this is it.