NAME

       Plack::App::Proxy - proxy requests

SYNOPSIS

         use Plack::Builder;

         # proxy all requests for /static to 127.0.0.1:80
         builder {
             mount "/static" => Plack::App::Proxy->new(remote => "http://127.0.0.1:80")->to_app;
         };

         # Call from other app
         my $proxy = Plack::App::Proxy->new->to_app;
         my $app = sub {
             my $env = shift;
             ...
             $env->{'plack.proxy.url'} = $url;
             $proxy->($env);
         };

DESCRIPTION

       Plack::App::Proxy is a middleware-aware proxy application for Plack.

OPTIONS

       remote
             Plack::App::Proxy->new(remote => 'http://perl.org')->to_app;

           Specifies the base remote URL to proxy requests to.

             builder {
                 mount "/example",
                     Plack::App::Proxy->new(remote => 'http://example.com/app/foo')->to_app;
             };

           This proxies incoming requests for "/example/bar" proxied to
           "http://example.com/app/foo/bar".

       preserve_host_header
           Preserves the original Host header, which is useful when you do reverse proxying to
           the internal hosts.

       backend
           The HTTP backend to use. This dist comes with "LWP" and "AnyEvent::HTTP" backends.
           "AnyEvent::HTTP" is the default if no backend is specified.

       options
           The options for the HTTP backend instance.

MIDDLEWARE CONFIGURATIONS

       This application is just like a normal PSGI application and is middleware aware, which
       means you can modify proxy requests (and responses) using Plack middleware stack.

       It also supports the following special environment variables:

       plack.proxy.url
           Overrides the proxy request URL.

       plack.proxy.remote
           Overrides the base URL path to proxy to.

       For example, the following builder code allows you to proxy all GET requests for .png
       paths to the lolcat image (yes, a silly example) but proxies to the internal host
       otherwise.

         my $mw = sub {
             my $app = shift;
             sub {
                 my $env = shift;
                 if ($env->{REQUEST_METHOD} eq 'GET' && $env->{PATH_INFO} =~ /\.png$/) {
                     $env->{'plack.proxy.url'} = 'http://lolcat.example.com/lol.png';
                 }
                 $app->($env);
             };
         };

         use Plack::Builder;

         builder {
             enable $mw;
             Plack::App::Proxy->new(remote => 'http://10.0.0.1:8080')->to_app;
         };

AUTHOR

       Lee Aylward

       Masahiro Honma

       Tatsuhiko Miyagawa

       Jesse Luehrs

LICENSE

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

SEE ALSO

       Plack::Builder