How to configure simple web-socket server in c/c++ on windows?

Things to note :

• I have client written in HTML5 and JavaScript. It works perfectly fine with server written in java.


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  I need to have server written in C or C++.

  
  


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  I have goggled and tracked down , libwebsocket is one way but it has GPL license, So not allowed to use for commercial purpose.

  
  


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  Even if for a moment I forget about licence, I may sound a newbie here, But all example which claim to work have unistd.h included and work on Linux. I want application very specifically on windows platform.

  
  


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  By looking at java code, I understood that, I need to process handshake before any communication through web socket. Except this it is a simple TCP socket ( Correct me if I am wrong ).But problem is, In handshake, Java code is using very inbuilt function for hash and encoding.

  
  

Now : Do we have any library or code example to process Handshake in C which is not GPL Licensed ? Any Help is appreciated :)