string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ping%E5%80%BC%E5%BE%88%E9%AB%98%E6%80%8E%E4%B9%88%E5%9B%9E%E4%BA%8B => Failed to connect to 14.18.46.51 port 38044: Connection refused"
ping值很高怎么回事
