string(306) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%BE%E4%B8%8D%E5%88%B0dns%E5%9C%B0%E5%9D%80%E6%80%8E%E4%B9%88%E5%8A%9E%E9%BB%98%E8%AE%A4%E7%BD%91%E5%85%B3%E4%B8%8D%E5%8F%AF%E7%94%A8 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
找不到dns地址怎么办默认网关不可用
