string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BC%81%E4%B8%9A%E7%BD%91%E7%BB%9C%E9%BB%91%E5%AE%A2%E6%94%BB%E5%87%BB%E7%9A%84%E6%A1%88%E4%BE%8B => Failed to connect to 101.89.117.144 port 38017: Connection refused"
企业网络黑客攻击的案例
