Catalyst::Engine::PSGI(3pm)				User Contributed Perl Documentation			       Catalyst::Engine::PSGI(3pm)

NAME

       Catalyst::Engine::PSGI - PSGI engine for Catalyst

SYNOPSIS

	 # app.psgi
	 use strict;
	 use MyApp;

	 MyApp->setup_engine('PSGI');
	 my $app = sub { MyApp->run(@_) };

DESCRIPTION

       Catalyst::Engine::PSGI is a Catalyst Engine that adapts Catalyst into the PSGI gateway protocol.

COMPATIBILITY

       o   Currently this engine works with Catalyst 5.8 (Catamoose) or newer.

       o   Your application is supposed to work with any PSGI servers without any code modifications, but if your application uses
	   "$c->res->write" to do streaming write, this engine will buffer the output until your app finishes.

	   To do real streaming with this engine, you should implement an IO::Handle-like object that responds to "getline" method that returns
	   chunk or undef when done, and set that object to "$c->res->body".

	   Alternatively, it is possible to set the body to a code reference, which will be used to stream content as documented in the PSGI spec.

       o   When your application runs behind the frontend proxy like nginx or lighttpd, this Catalyst engine doesn't automatically recognize the
	   incoming headers like "X-Forwarded-For", because respecting these headers by default causes a potential security issue.

	   You have to enable Plack::Middleware::ReverseProxy or Plack::Middleware::ForwardedHeaders to automatically promote those forwarded
	   headers into "REMOTE_ADDR" hence IP address of the request.

	   ReverseProxy middleware is pretty simple and has no configuration while ForwardedHeaders allows you to configure which upstream host to
	   trust, etc.

AUTHOR

       Tatsuhiko Miyagawa <miyagawa@bulknews.net>

       Most of the code is taken and modified from Catalyst::Engine::CGI.

LICENSE

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

SEE ALSO

       Catalyst::Engine PSGI Plack

perl v5.12.3							    2011-06-11					       Catalyst::Engine::PSGI(3pm)