string(283) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E7%9C%8B%E7%BD%91%E5%85%B3%E6%98%AF%E5%90%A6%E8%BF%9E%E6%8E%A5%E5%88%B0%E4%BA%92%E8%81%94%E7%BD%91 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
怎么看网关是否连接到互联网
