packet_type_summary.rb

require 'packetfu'

iface = PacketFu::Utils.default_int
cap = PacketFu::Capture.new(:iface => iface, :start => true)

# create an empty hash that starts for our base stats
stats = Hash.new(0)
# a hash inside of stats for types, which also starts at 0
stats[:types] = Hash.new(0)

# will parse packets providing summary data of packet contents
cap.stream.each do | packet |
  packet_info = PacketFu::Packet.parse(packet)
  type = packet_info.proto.last.to_sym
  stats[:count] += 1
  stats[:types][type] += 1 
  # clear screen  and puts stats
  system('clear')
  puts stats
end

# => example output ...
# {:types=>{:TCP=>1832, :UDP=>100, :ARP=>2}, :count=>1934}