Please see my comment to the question. It does not really make sense, because there is no such thing. You cannot simply send some arbitrary request; it content should depend on the metadata defined by the page receiving the request. Besides, it may or may not support one or another HTTP request
method. All you do should be in compliance with the server side of your Web page (Web application, Web service). For further detail, please see:
http://en.wikipedia.org/wiki/HTTP[
^].
To implement HTTP request, use some suitable network library for C++. First of all, I would recommend to look at this one:
http://cpp-netlib.org/0.9.2[
^].
—SA