string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=dnf%E5%88%86%E8%A7%A3%E6%9C%BA%E5%9C%A8%E5%93%AA%E5%8D%87%E7%BA%A7 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
dnf分解机在哪升级
