title: Android In-app Billing and own data server
body: <p>Today I need some help from peoples, who have experience in In-app Billing.</p>
  
  <p>Let I have my own server with digital content for applications from Market and some applications with billing support. User download it from the market and want to buy additional functionality. He paid for it, using billing, and what to to next?</p>
  
  <p>I must invoke some method's of my own server with content from application or Market can send some request to it with information about bought content?</p>
  
  <p>I want to say, logic for downloading bought content must be implemented in application and only from here i can begin to download bought content or market server can send some information to my server with content?</p>