# File lib/webrick/httputils.rb, line 234
      def <<(str)
        if @header
          super
        elsif str == CRLF
          @header = HTTPUtils::parse_header(@raw_header)
          if cd = self['content-disposition']
            if /\s+name="(.*?)"/ =~ cd then @name = $1 end
            if /\s+filename="(.*?)"/ =~ cd then @filename = $1 end
          end
        else
          @raw_header << str
        end
        self
      end