X-Forwarded-For

[Jonathan Vanasco <suppressed>]

my mp2 needs to get the ip of the remote address

on some installations, mp2 is on port 80

on other installations, mp2 is on 80xx and the ip is in X-Forwarded-For

i'd like to ensure that i pull the ip off the right place, under the  
right conditions.  all of my get_ip() calls  happen in a shared  
library though, so I need to figure out a way to handle this  under  
those constraints, and not deal with spoofs.

first i found this module
	Apache::ForwardedFor
	http://search.cpan.org/~jlawrenc/Apache-ForwardedFor-0.5/lib/Apache/ 
ForwardedFor.pm

but its
	Apache1
	not porting nicely
	designed oddly- doesn't seem to forw

short of rewriting it , which i might have to do, maybe someone has  
an apach2 compatible solution already?

i'm thinking that the easiest way to do this would be:

httpd.conf-
	run a preliminary handler that strips all x-forwarded-for headers  
unless:
		we're running on port 80
		we're running on port 80 but there's some internal lan header  
marking that says its coming off a load balancer i control

although i could just do a conditional rewrite of headers in a new  
forwarded module