# File lib_core/rucy/response.rb, line 116
    def conn_close
      if (! headers('Connection').find{ |v| v =~ /close/i }) then
        set_header('Connection', 'close', true)
      end
      delete_header_if('Connection') { |value|
        value =~ /Keep-Alive/i
      }
      delete_header('Keep-Alive')

      nil
    end