string(223) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cmtds%E5%92%8Ccmnet%E7%BD%91%E9%80%9F%E5%8C%BA%E5%88%AB => Failed to connect to 125.88.227.171 port 38114: Connection refused"
cmtds和cmnet网速区别
