Grab Libnet , there will be a site for it, it prolly even is simple as googling it :P and, just grab static lib file , and then goto winpcap.org , now, you can, compile a v3, (coz this has best control over winsockets....trust me it does) ... dont us

端口扫描高级编程-附完整源代码，可以编译运行 可以指定IP地址，并根据意愿选择扫描一个端口还是扫描多个端口，设定扫描线程数，可以保存扫描结果.-Advanced Programming port scan- with complete source code, can compile and run you can specify IP addresses, and will choose according to a port scan or scan multiple ports, se

局域网主机存活检测，编译通过，发布出来供大家参考！-LAN hosts survived testing, compile, publish it for your reference!

一个网络爬虫，界面很漂亮，编译通过，发布出来供大家参考！仔细研究对提高水平很有帮助！- A web crawler, the interface is very beautiful, compile, publish it for your reference! Careful study to improve the level of helpful!