string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=5g%E6%99%BA%E8%83%BD%E5%AE%B6%E5%B1%85%E7%9A%84%E5%BA%94%E7%94%A8%E4%B8%BE%E4%BE%8B => Failed to connect to 101.91.112.32 port 38162: Connection refused"
5g智能家居的应用举例
