This is Perl module Perlbal::Plugin::BackendHeaders.
INSTALLATION
Perlbal::Plugin::BackendHeaders installation is straightforward. If your CPAN shell is set up,
you should just be able to do
% cpan Perlbal::Plugin::BackendHeaders
Download it, unpack it, then build it as per the usual:
% perl Makefile.PL
% make && make test
Then install it:
% make install
Finally apply the modify_headers.patch to perlbal:
% cat modify_headers.patch | patch -p0
Check to make sure it works:
% curl -I http://mydomain.com/
HTTP/1.0 200 OK
Content-Type: text/html; charset=utf-8
Content-Language: en
Pragma: public
X-Backend: mydomain:8880
Connection: close
DOCUMENTATION
Perlbal::Plugin::BackendHeaders documentation is available as in POD. So you can do:
% perldoc Perlbal::Plugin::BackendHeaders
to read the documentation online with your favorite pager.
Victor Igumnov