This is Perl module Plack::Middleware::ReverseProxy.
INSTALLATION
Plack::Middleware::ReverseProxy installation is straightforward. If your CPAN shell is set up,
you should just be able to do
% cpan Plack::Middleware::ReverseProxy
Download it, unpack it, then build it as per the usual:
% perl Makefile.PL
% make && make test
Then install it:
% make install
DOCUMENTATION
Plack::Middleware::ReverseProxy documentation is available as in POD. So you can do:
% perldoc Plack::Middleware::ReverseProxy
to read the documentation online with your favorite pager.
Noubo Danjou