Free, Freedom
C++ REST SDK
https://msdn.microsoft.com/ko-kr/library/windows/apps/jj950081(v=vs.120).aspx
http://mitierra.tistory.com/2
http://kdb.or.kr/info/info_04_view.html?field=&keyword=&type=techreport&page=44&dbnum=173993&mode=detail&type=techreport
