title: Lightweight alternative to socket.io for transport only
body: <p>Is there a lightweight alternative to socket.io for transport only? </p>
  
  <p>I have an node.js application that uses socket.io simply as an message transport. My application is managing sessions and message routing on its own, I am simply using socket.io for transport -- websocket + whatever the default fallback is for older browsers. </p>
  
  <p>The newer version of socket.io seems to get heavier and heavier, now comes with redis support, which I totally do not need. </p>