string(229) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cmtds%E4%B8%8Ectnet%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB => Failed to connect to 14.18.46.51 port 38206: Connection refused"
cmtds与ctnet有什么区别
