1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#!/usr/bin/env ruby
# -*- coding: binary -*-
# Used mainly to test for memory leaks and to demo the preferred ways of
# reading and writing packets to and from pcap files.
# Usage:
# ruby examples/100kpackets.rb
# Path setting slight of hand:
$: << File.expand_path("../../lib", __FILE__)
require 'packetfu'
puts "Generating packets... (#{Time.now.utc})"
File.unlink("/tmp/out.pcap") if File.exist? "/tmp/out.pcap"
start_time = Time.now.utc
count = 0
100.times do
@pcaps = []
1000.times do
u = PacketFu::UDPPacket.new
u.ip_src = [rand(2**32-1)].pack("N")
u.ip_dst = [rand(2**32-1)].pack("N")
u.recalc
@pcaps << u
end
pfile = PacketFu::PcapFile.new
res = pfile.array_to_file(:filename => "/tmp/out.pcap", :array => @pcaps, :append => true)
count += res.last
puts "Wrote #{count} packets in #{Time.now.utc - start_time} seconds"
end
read_bytes_start = Time.now.utc
puts "Reading packet bytes..."
packet_bytes = PacketFu::PcapFile.read_packet_bytes "/tmp/out.pcap"
puts "Read #{packet_bytes.size} packet byte blobs in #{Time.now.utc - read_bytes_start} seconds."
read_packets_start = Time.now.utc
puts "Reading packets..."
packet_bytes = PacketFu::PcapFile.read_packets "/tmp/out.pcap"
puts "Read #{packet_bytes.size} parsed packets in #{Time.now.utc - read_packets_start} seconds."
|
