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# 1008, Sun 13 Nov 2016 (KST)
#
# test-tcp-options.py: Test tcp options handling in plt
#
# Copyright (C) 2017, Nevil Brownlee, U Auckland | WAND
from plt_testing import *
tcp_fn = "anon-v4.pcap"
def test_option(n):
xn = tcp.option(n)
if isinstance(xn, bool):
test_println(" opt %d: > %s <" % (n, xn), get_tag())
else:
oline = " opt %d: >" % n
for c in xn:
oline +=" %02x" % c
test_println(oline + " <", get_tag())
t = plt.trace("pcapfile:"+tcp_fn)
t.start()
n = 0
for pkt in t:
n += 1
tcp = pkt.tcp
if not tcp:
continue
if tcp.doff == 5: # No TCP options
continue
test_println("pkt %d ---" % n, get_tag())
xod = tcp.options_data
oline = " "
for c in xod:
oline += " %02x" % c
test_println(oline + " (%d)" % len(xod), get_tag())
ol = tcp.option_numbers
for opt in ol:
test_option(opt)
if n == 40:
break
t.close
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