string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=qq%E6%B7%BB%E5%8A%A0%E5%A5%BD%E5%8F%8B%E7%AD%89%E5%BE%85%E9%AA%8C%E8%AF%81%E7%9A%84%E6%97%B6%E9%97%B4%E9%99%90%E5%88%B6 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
qq添加好友等待验证的时间限制
