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#!/usr/bin/env python
# Thu, 13 Mar 14 (PDT)
# sw-filter.py: Prints udp records from a trace
# Copyright (C) 2015, Nevil Brownlee, U Auckland | WAND
from plt_testing import *
t = get_example_trace('anon-v4.pcap')
n = nfp = 0; offset = 12
for pkt in t:
n += 1
if pkt.udp and (pkt.udp.src_port == 53 or pkt.udp.dst_port == 53):
nfp += 1
test_println("%4d:" % (n), get_tag())
print_udp(pkt.udp, offset, get_tag("n:"+str(n)))
test_println('')
if nfp == 4:
break
test_println("%d raw -> %d filtered packets" % (n, nfp), get_tag())
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