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Size: 1.15 KB
Versions: 6
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Stored size: 1.15 KB
Contents
require 'pio/type/ip_address'
module Pio
module Type
# IP Version 4 Header Format
module IPv4Header
# This method smells of :reek:TooManyStatements
# rubocop:disable MethodLength
# rubocop:disable AbcSize
def ipv4_header(options = {})
class_eval do
bit4 :ip_version, initial_value: 0x4
bit4 :ip_header_length, initial_value: 0x5
uint8 :ip_type_of_service, initial_value: 0
uint16be :ip_total_length,
initial_value: options[:ip_total_length] || 0
uint16be :ip_identifier, initial_value: 0
bit3 :ip_flag, initial_value: 0
bit13 :ip_fragment, initial_value: 0
uint8 :ip_ttl, initial_value: 128
uint8 :ip_protocol, initial_value: options[:ip_protocol] || 0
uint16be :ip_header_checksum,
initial_value: options[:ip_header_checksum] || 0
ip_address :ip_source_address
ip_address :ip_destination_address
string :option, read_length: -> { 20 - ip_header_length * 4 }
end
end
# rubocop:enable AbcSize
# rubocop:enable MethodLength
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems