# File lib/httpclient/http.rb, line 225
      def dump
        set_header
        str = nil
        if @is_request
          str = request_line
        else
          str = response_status_line
        end
        str + @header_item.collect { |key, value|
          "#{ key }: #{ value }#{ CRLF }"
        }.join
      end