# File estraierpure.rb, line 951
    def set_link(url, label, credit)
      Utility::check_types({ url=>String, label=>String, credit=>Integer }) if $DEBUG
      @status = -1
      return false unless @url
      turl = @url + "/_set_link"
      reqheads = [ "Content-Type: application/x-www-form-urlencoded" ]
      reqheads.push("Authorization: Basic " + Utility::base_encode(@auth)) if @auth
      reqbody = "url=" + CGI::escape(url) + "&label=" + label
      reqbody += "&credit=" + credit.to_s if credit >= 0
      rv = Utility::shuttle_url(turl, @pxhost, @pxport, @timeout, reqheads, reqbody, nil, nil)
      @status = rv
      rv == 200
    end