string(224) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=wifi6%E6%98%AF2.4g%E8%BF%98%E6%98%AF5g%E7%A8%B3%E5%AE%9A => Failed to connect to 101.89.143.195 port 38175: Connection refused"
wifi6是2.4g还是5g稳定
