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#!/usr/bin/env python
# Copyright (C) 2015, Nevil Brownlee, U Auckland | WAND
from plt_testing import *
#t = get_example_trace('icmp6-sample.pcap')
t = get_example_trace('anon-v6.pcap')
n = 0
for pkt in t:
n += 1 # Wireshark uses 1-org packet numbers
ip6 = pkt.ip6
if not ip6:
continue
tcp = ip6.tcp
if tcp:
try:
test_println("%3d tcp checksum=%04x, ok=%s" % (
n, tcp.checksum, tcp.test_trans_cksm()), get_tag("n:"+str(n)))
if not tcp.test_trans_cksm():
tcp.set_trans_cksm()
else:
tcp.checksum = 0x1234
test_println(" tcp checksum=%04x, ok=%s" % (
tcp.checksum, tcp.test_trans_cksm()), get_tag("n:"+str(n)))
except ValueError as e:
test_println(" .tcp. %s" % e, get_tag("n:"+str(n)))
udp = ip6.udp
if udp:
try:
test_println("%3d udp checksum=%04x, ok=%s" % (
n, udp.checksum, udp.test_trans_cksm()), get_tag("n:"+str(n)))
if not udp.test_trans_cksm():
udp.set_trans_cksm()
else:
udp.checksum = 0x5678
test_println(" udp checksum=%04x, ok=%s" % (
udp.checksum, udp.test_trans_cksm()), get_tag("n:"+str(n)))
except ValueError as e:
test_println(" .udp. %s" % e, get_tag("n:"+str(n)))
icmp6 = ip6.icmp6
if icmp6:
try:
test_println("%3d icmp6 checksum=%04x, ok=%s" % (
n, icmp6.checksum, icmp6.test_trans_cksm()), get_tag("n:"+str(n)))
if not icmp6.test_trans_cksm():
icmp6.set_trans_cksm()
else:
icmp6.checksum = 0x9abc
test_println(" icmp6 checksum=%04x, ok=%s" % (
icmp6.checksum, icmp6.test_trans_cksm()), get_tag("n:"+str(n)))
except ValueError as e:
test_println(" .icmp6. %s" % e, get_tag("n:"+str(n)))
#if n == 5:
# break
test_println("%5d packets accepted" % (t.pkt_accepts()), get_tag())
test_println("%5d packets dropped" % (t.pkt_drops()), get_tag())
t.close() # Don't do this inside the loop!
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