string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E4%BF%A1dns%E8%AE%BE%E7%BD%AE%E9%82%A3%E4%B8%AA%E6%9C%80%E5%A5%BD => Failed to connect to 101.89.143.195 port 38205: Connection refused"
电信dns设置那个最好
