string(244) "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 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
ping值高是网络问题吗
