title: ToyVPN Example uin android and shared secret
body: <p>I have downloaded ToyVPN example and I want to test it </p>
  
  <p>I have the following information :</p>
  
  <p>Server IP, Server port, Username, Password</p>
  
  <p>What application needs from me (Server IP, Server port, Shared Secret)</p>
  
  <p>I don't know what is the meaning of shared secret, and how to be able to use my (username and password)</p>
  
  <p>Please if anyone can help</p>