client-side disconnect is not detected

var socketio = io.connect(socketServer, 
                {rememberTransport: false, 
                'reconnect': true,
                'reconnection delay': 500,
                'max reconnection attempts': 10,
                'secure': true});

socketio.on('disconnect', function() {
    alert('client socketio disconnect!')
});

The alert shows up if I take down the Node server, but not if I turn off my wireless, or close my laptop and re-open it later. The connection is lost though. Is there a better way to detect disconnect on the client side? This is with the WebSockets transport.

[iamisti]

Please re-open this ticket, since it’s not yet fixed! I’was looking at the file: https://github.com/socketio/socket.io-client/blob/master/lib/manager.js to figure out if there is any option for that, and I found timeout which is 20 second by default. But when I’ve tried to change it to 4 sec, it just didn’t work at all.

[pwhisenhunt]

I was able to fix this issue by adjusting the heartbeat timeout and heartbeat interval settings on the server, which I believe dictates the client side heartbeat. For example, if you’d like the client to trigger a disconnect after it does two heartbeats every 4 seconds and doesn’t get a response then you would configure like the following.

io.set('heartbeat timeout', 10) io.set('heartbeat interval', 4)