title: Create Android Wifi Chat application
body: <p>I am totally new to android as well as java for android programming.
  I have to create an android app which uses wifi to chat with the devices available in the available wifi area.
  I wouls like to know how can i implement this?
  What are the requirements to create such app?
  If it is already created, i would like to download one for the reference purpose.
  Kindly help me.</p>