This package includes a variety of add-on components for Rack, a Ruby web server interface:
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Rack::JSONP - Adds JSON-P support by stripping out the callback param and padding the response with the appropriate callback format.
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Rack::LighttpdScriptNameFix - Fixes how lighttpd sets the SCRIPT_NAME and PATH_INFO variables in certain configurations.
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Rack::Locale - Detects the client locale using the Accept-Language request header and sets a rack.locale variable in the environment.
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Rack::MailExceptions - Rescues exceptions raised from the app and sends a useful email with the exception, stacktrace, and contents of the environment.
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Rack::NestedParams - parses form params with subscripts (e.g., * “post=Hello”) into a nested/recursive Hash structure (based on Rails’ implementation).
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Rack::PostBodyContentTypeParser - Adds support for JSON request bodies. The Rack parameter hash is populated by deserializing the JSON data provided in the request body when the Content-Type is application/json.
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Rack::ProcTitle - Displays request information in process title ($0) for monitoring/inspection with ps(1).
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Rack::Profiler - Uses ruby-prof to measure request time.
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Rack::Sendfile - Enables X-Sendfile support for bodies that can be served from file.
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Rack::Signals - Installs signal handlers that are safely processed after a request
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Rack::StaticCache - Modifies the response headers to facilitiate client and proxy caching for static files that minimizes http requests and improves overall load times for second time visitors.
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Rack::TimeZone - Detects the client’s timezone using JavaScript and sets a variable in Rack’s environment with the offset from UTC.
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Rack::Evil - Lets the rack application return a response to the client from any place.
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Rack::Callbacks - Implements DSL for pure before/after filter like Middlewares.
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Rack::Config - Shared configuration for cooperative middleware.
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Rack::NotFound - A default 404 application.
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Rack::CSSHTTPRequest - Adds CSSHTTPRequest support by encoding responses as CSS for cross-site AJAX-style data loading
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Rack::Deflect - Helps protect against DoS attacks.
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Rack::ResponseCache - Caches responses to requests without query strings to Disk or a user provider Ruby object. Similar to Rails’ page caching.
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Rack::RelativeRedirect - Transforms relative paths in redirects to absolute URLs.
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Rack::Backstage - Returns content of specified file if it exists, which makes it convenient for putting up maintenance pages.
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Rack::AcceptFormat - Adds a format extension at the end of the URI when there is none, corresponding to the mime-type given in the Accept HTTP header.
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Rack::HostMeta - Configures /host-meta using a block
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Rack::Cookies - Adds simple cookie jar hash to env
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Rack::Access - Limits access based on IP address
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Rack::ResponseHeaders - Manipulates response headers object at runtime
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Rack::SimpleEndpoint - Creates simple endpoints with routing rules, similar to Sinatra actions
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Rack::TryStatic - Tries to match request to a static file
Git is the quickest way to the rack-contrib sources:
git clone git:https://github.com/rack/rack-contrib.git
Gems are available too:
gem install rack-contrib
Requiring ‘rack/contrib’ will add autoloads to the Rack modules for all of the components included. The following example shows what a simple rackup (config.ru) file might look like:
require 'rack' require 'rack/contrib' use Rack::Profiler if ENV['RACK_ENV'] == 'development' use Rack::ETag use Rack::MailExceptions run theapp
To contribute to the project, begin by cloning the repo and installing the necessary gems:
gem install json rack ruby-prof test-spec test-unit
To run the entire test suite, run
rake test
To run a specific component’s tests run
specrb -Ilib:test -w test/spec_rack_thecomponent.rb
This works on ruby 1.8.7 but has problems under ruby 1.9.x.
TODO: instructions for 1.9.x and include bundler
- rack-contrib on GitHub
- Rack
- Rack On GitHub
- rack-devel mailing list