ethereal的抓包过滤器原码，能对各种协议报文进行分析和过滤 -The packet capture filter ethereal source, capable of protocol analysis and packet filtering

利用WIRESHARK抓包后，可以将过滤报文保存为TXT格式，再使用该MATLAB程序可以将报文的净荷部分提取出来(Use WIRESHARK capture package, you can save the filter message TXT format, and then use the MATLAB program can extract the payload portion of the message)