It implements a routine to analyze the important protocols in the TCP/IP protocol stack,such as Ethernet,IP,TCP,UDP and HTTP,on the basis of the Winpcap library and its BPF mechanism to capture and filter data on the network interface card.

• 在讨论Winpcap函数库和其中的BPF过滤机制的基础上,实现了对Ethernet,IP,TCP,UDP,HTTP等主要协议的分析。