writing a VERY simple http server with libwww?

I am trying to use Library/Examples/listen.c and turn it into a very
simple http server. I just want to write a very basic app which always
serves back the same file (application/binary) through http whatever the
query for now.

Does anyone have hints on how to do that? What steps should I take from
listen.c to get that up and running?

TTimo