simply add

#if defined(_MSC_VER)
#include <stddef.h>
#endif

to your header http11_parser.h and run extconf.rb for makefile 
generation or from the top folder setup.rb for building and install.

_MSC_VER for testing microsoft compiler, _WIN32 is more generic for 
platform.

:)

zedshaw / zedshaw.com wrote:
> Done.  I'll post a 0.2.2 tonight with this and some other improvements.
> 
> BTW, could you describe to me your win32 build setup so that I can try
> building it too?
> 
> Zed