string(278) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ping%E5%80%BC%E9%AB%98%E6%98%AF%E7%BD%91%E7%BB%9C%E9%97%AE%E9%A2%98%E5%90%97%E6%80%8E%E4%B9%88%E8%A7%A3%E5%86%B3 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
ping值高是网络问题吗怎么解决
