# File lib/faye-rails/rack_adapter.rb, line 132
      def take_action_for(message, callback, test='')
        if @mappings.keys.select { |glob| FayeRails::Matcher.match? glob, test }.size > 0
          callback.call(message)
        elsif @default == :block
          message['error'] = "Permission denied"
          callback.call(message)
        elsif @default == :drop
          callback.call(nil)
        elsif @default == :allow
          callback.call(message)
        else
          callback.call(nil)
        end
      end