basic_object.rb

module CloudKit
  if defined? ::BasicObject
    class BasicObject < ::BasicObject
      undef_method :==
      undef_method :equal?

      # Let ActiveSupport::BasicObject at least raise exceptions.
      def raise(*args)
        ::Object.send(:raise, *args)
      end
    end
  else
    require 'blankslate'
    BasicObject = BlankSlate
  end
end

gistfile3.rb

#config.ru
require 'cloudkit'
require 'rufus/tokyo'
$:.unshift File.expand_path(File.dirname(__FILE__)) + '/lib'
require 'rewindable_input' #<=== ensure rack input is rewindable
CloudKit.setup_storage_adapter(Rufus::Tokyo::Table.new('cloudkit.tdb'))
use Rack::Session::Pool
use CloudKit::RewindableInput
use CloudKit::Service, :collections => [:votes]
run lambda {|env| [200, {'Content-Type' => 'text/html', 'Content-Length' => '5'}, ['HELLO']]}

rewindable_input.rb

require 'basic_object'

module CloudKit
  class RewindableInput
    class RewindableIO < CloudKit::BasicObject
      def initialize(io)
        @io = io
        @rewindable = io.is_a?(::StringIO)
      end

      def method_missing(method, *args, &block)
        unless @rewindable
          @io = ::StringIO.new(@io.read)
          @rewindable = true
        end

        @io.__send__(method, *args, &block)
      end
    end

    def initialize(app)
      @app = app
    end

    def call(env)
      env['rack.input'] = RewindableIO.new(env['rack.input'])
      @app.call(env)
    end
  end
end