string(198) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9Cping%E5%80%BC%E5%BE%88%E9%AB%98 => Received HTTP code 403 from proxy after CONNECT"
网络ping值很高网!