DATE: Oct 6, 2010

This is a simple patch to nginx-0.8.52.

Assuming a setup where a response is proxied to a backend server, this patch
does a simple check of the Server header for one of two specific tokens.  If they are 
found the response is returned, otherwise the response is tossed.

Rationale:  Simple security/validation check that the backend is what you think it is.

TODO:  Put the patterns in a conf file (current hard-coded)

$ yum install -y openssl-devel pcre-devel
$ wget http://nginx.org/download/nginx-0.8.52.tar.gz
$ tar xvfz nginx-0.8.52.tar.gz
$ cd nginx-0.8.52 
$ patch -p1 < /home/nealr/Rubicon/code/github/nginx/nginx-0.8.52.TRP.patch 
patching file src/core/nginx.h
patching file src/http/ngx_http_upstream.c
$ ./configure --with-http_ssl_module --with-http_stub_status_module
$ make