title: How to keep alive socket connection in android 7.0 and above?
body: <p>I am developing multiplayer game using <a href="https://github.com/socketio/socket.io-client-java" rel="noreferrer">Socket.io</a> library. it Works Well.
  But, in android 7.0 and above, system automatically suspend all network work when my app is in background. <strong>(And I must need to keep alive my socket connection)</strong>.
  I research about it as described <a href="https://developer.android.com/training/monitoring-device-state/doze-standby.html" rel="noreferrer">here</a>.
  but, i can't understand. So, Please provide solution for that. </p>