pip install dpkt

import dpkt
import socket

file = 'tcp-log.pcap'
with open(file, 'rb') as fr:
????pcap = dpkt.pcap.Reader(fr)
????for timestamp, buffer in pcap:
????????ethernet = dpkt.ethernet.Ethernet(buffer)
????????# 我們僅需要TCP的包
????????if not isinstance(ethernet.data, dpkt.ip.IP):
????????????continue
????????ip = ethernet.data
????????if not isinstance(ip.data, dpkt.tcp.TCP):
????????????continue
????????tcp = ip.data
????????# 過濾掉內容為空的包
????????if len(tcp.data) == 0:
????????????continue
????????# 發送方的IP
????????src = socket.inet_ntoa(ip.src)
????????# 接收方的IP
????????dst = socket.inet_ntoa(ip.dst)
????????# 報文內容（byte數組）
????????byteArray = tcp.data
????????# TODO 根據自定義的協議內容，解析bytes數組