string(284) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B1%80%E5%9F%9F%E7%BD%91%E5%86%85%E5%AE%9E%E7%8E%B0%E6%96%87%E4%BB%B6%E5%85%B1%E4%BA%AB%E7%9A%84%E5%8D%8F%E8%AE%AE => Failed to connect to 101.91.112.32 port 38162: Connection refused"
局域网内实现文件共享的协议
