string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=dns%E6%80%8E%E4%B9%88%E8%AE%BE%E7%BD%AE%E6%89%8D%E8%83%BD%E4%B8%8A%E7%BD%91 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
dns怎么设置才能上网
