NAME
Plack - PSGI reference implementation and utilities
DESCRIPTION
Plack is a set of PSGI reference server implementations and helper utilities for Web application frameworks, exactly like Ruby's Rack.
See PSGI for the PSGI specification.
MODULES AND UTILITIES
Plack::Server
Plack::Server is a namespace for PSGI server implementations. We have Standalone, CGI, FCGI, Apache, AnyEvent, Coro, Danga::Socket and many server environments that you can run PSGI applications on.
See Plack::Server how to write your own server implementation.
Plack::Loader
Plack::Loader is a loader to load one of Plack::Server backends and run PSGI application code reference with it.
Plack::Util
Plack::Util contains a lot of utility functions for server implementors as well as middleware authors.
.psgi files
PSGI application is a code reference but it's not easy to pass code reference in the command line or configuration files, so Plack uses a convention that you need a file named app.psgi or alike, which would be loaded (via perl's core function do) to return the PSGI application code reference. See eg/dot-psgi directory for the example .psgi files.
plackup
plackup is a command line launcher to run PSGI applications from command line using Plack::Loader to load PSGI backends. It can be used to run standalone servers and FastCGI daemon processes. Other server backends like Apache2 needs a separate configuration but .psgi application file can still be the same.
Plack::Middleware
PSGI middleware is a PSGI application that wraps existent PSGI application and plays both side of application and servers. From the servers the wrapped code reference still looks like and behaves exactly the same as PSGI applications.
Plack::Middleware gives you an easy way to wrap PSGI applications with a clean API, and compatibility with Plack::Builder DSL.
Plack::Builder
Plack::Builder gives you a DSL that you can add "Middleware", in .psgi files to wrap existent PSGI applications.
Plack::Request, Plack::Response
Plack::Request gives you a nice wrapper API around PSGI $env hash to get headers, cookies and query parameters much like Apache::Request in mod_perl.
Plack::Response does the same to construct the response array reference.
Plack::Test
Plack::Test is an unified interface to test your PSGI application using standard HTTP::Request and HTTP::Response pair with simple callbacks.
Plack::Test::Suite
Plack::Test::Suite is a test suite to test a new PSGI server backend.
AUTHORS
Tatsuhiko Miyagawa
Yuval Kogman
Tokuhiro Matsuno
Kazuhiro Osawa
Kazuho Oku
SEE ALSO
LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.