string(289) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9C%E8%BF%9E%E6%8E%A5%E5%8F%97%E9%99%90%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%E5%B9%B3%E6%9D%BFwifi => Failed to connect to 101.89.159.206 port 38100: Connection refused"
网络连接受限是什么意思平板wifi
