config.ru

ENV['RACK_ENV'] ||= 'development'
begin
  require File.expand_path('../.bundle/environment', __FILE__)
rescue LoadError
  require "rubygems"
  require "bundler"
  Bundler.setup(:runtime)
end

Bundler.require(:runtime)

class ShowHeaders < Sinatra::Base
  get '/' do
    content = ""
    headers.each do |key, value|
      content << "#{key} -> #{value}\n"
    end
    content
  end
end

run ShowHeaders

# vim:ft=ruby

Gemfile

source :gemcutter

group :runtime do
  gem 'sinatra',             '~>1.0'
  gem 'rack',                '~>1.0.0'
end

# vim:ft=ruby