windows - How to setup license server? -

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i have windows programm , want make own license server. don't generate key manually. idea check on server 2 copies running @ same time.

my algorithm.

  1. user buy license key.
  2. server script insert key server database.
  3. user enters key program. program insert database.
  4. user start programm. after that, program login server using license key. , logout when user close programm.
  5. if there 2 copies login server same time using same key, server script deactivates license key.

but problem substitution of license server fake server hosts file in windows os. may server should return unique in answer after programm authentication , programm must understand user login license server not in fake server. what?

any ideas?

i not know how can make wish to, easier make login page, user bought license key have insert account program work. i'm telling idea here not how make it.


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