title: How to check if a socket client-server is on same network?
body: <p>I'm working with socket and to this I'm using TIdTCPClient and TIdTCPServer.
  I need to check if the TIdTCPServer that the TIdTCPClient connected is on the same network.</p>
  
  <p>How can I do this ? </p>
  
  <p>at.</p>