title: how to use socket.io with background service on android?
body: <p>I use gottox/socket.io-java-client on android chat app.And Now I want to use socket.io as a background service.In chat app If a new message (when chat app is closed),send a notification like "new message on chat app-click here if you want to see.
  How can I do that? I did a chat app with node.js,gottox on android.But I need this app work as a background service on phone.Do you have any plugins or examples?</p>