python 抓包)

import pcap, dpkt, structimport binasciidef main():    a = pcap.pcap()    a.setfilter('udp portrange 4000-4050')    try:        for i,pdata in a:            p=dpkt.ethernet.Ethernet(pdata)            src='%d.%d.%d.%d' % tuple(map(ord,list(p.data.src)))            dst='%d.%d.%d.%d' % tuple(map(ord,list(p.data.dst)))            sport = p.data.data.sport            dport = p.data.data.dport            qq = int( binascii.hexlify(p.data.data.data[7:11]) , 16 )            print 'QQ: %d, From: %s:%d , To: %s:%d' % (qq,src,sport,dst,dport)    except Exception,e:        print '%s' % e    n = raw_input()if __name__ == '__main__':    main()