Building Apache for Proxying
With the exception of mod_proxy_html, the above are all included in
the core Apache distribution. They can easily be enabled in the Apache
build process. For example:
$ ./configure --enable-so --enable-mods-shared="proxy \
proxy_http proxy_ftp proxy_connect headers"
$ make
# make install
Of course, you may want other build options too, and you could just as
well build the modules as static.
If you are adding proxying to an existing installation, you should use
apxs instead:
# apxs -c -i [module-name].c
noting that mod_proxy itself is in two source files
(mod_proxy.c and proxy_util.c).
This leaves mod_proxy_html, which is not included in the core
distribution. mod_proxy_html is a third-party module, and requires a
third-party library libxml2. At the time of writing, libxml2 is
installed as standard or packaged for most operating systems. If you
don't have it, you can download it from xmlsoft.org and install it
yourself. For the purposes of this article, we'll assume libxml2 is
installed as /usr/lib/libxml2.so, with headers in
/usr/include/libxml2/libxml/.
- Check libxml2 is installed. If you have a version older than
2.5.10, then upgrade - there's a bug in earlier versions that can,
in some particular cases, severely affect performance.
- Download mod_proxy_html.c from http://apache.webthing.com/
- Build mod_proxy_html with apxs:
# apxs -c -I/usr/include/libxml2 -i mod_proxy_html.c
