File: SPEC — Documentation for rack/rack (master)

This specification aims to formalize the Rack protocol. You can (and should) use Rack::Lint to enforce it. When you develop middleware, be sure to add a Lint before and after to catch all mistakes. Rack applications A Rack application is a Ruby object (not a class) that responds to call. It takes exactly one argument, the environment and returns an Array of exactly three values: The status, the he