A great alternative to socket.io is sock.js http://sockjs.org http://sockjs.org I've been using it in production now for a few weeks on http://worldofcardgames.

A great alternative to socket.io is sock.js http://sockjs.org http://sockjs.org I've been using it in production now for a few weeks on http://worldofcardgames.com http://worldofcardgames.com with no issues.