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Plack - PSGI reference implementation and utilities
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.
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 is a loader to load one of Plack::Server backends and run
PSGI application code reference with it.
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 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.
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 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
Plack::Response does the same to construct the response array reference.
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 is a test suite to test a new PSGI server backend.
See "AUTHORS" file.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
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