string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%99%BA%E8%83%BD%E5%AE%B6%E5%B1%855g%E6%9C%89%E4%BB%80%E4%B9%88 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
智能家居5g有什么
