socket.io The connection to ws:// was interrupted while the page was loading

Question

I don't know why but I am still getting this error on my website (hosted on nodejitsu.com). If am I testing project on localhost everything goes well, but if I open it in browser this error is showing..

I was searching for this issue, but I didn't find anything usefull..

Answer 1

This does the trick:

$(window).on('beforeunload', function(){
    socket.close();
});