string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%92%E8%81%94%E7%BD%91%E6%8E%A8%E5%B9%BF%E5%90%88%E6%B3%95%E5%90%97 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
互联网推广合法吗
