Class: PacketGen::Header::IP::LSRR

Inherits:
Option show all
Defined in:
lib/packetgen/header/ip/option.rb

Overview

Loose Source and Record Route IP option

Direct Known Subclasses

RR, SSRR

Constant Summary

Constants inherited from Option

Option::EOL_TYPE, Option::LSRR_TYPE, Option::NOP_TYPE, Option::RA_TYPE, Option::RR_TYPE, Option::SI_TYPE, Option::SSRR_TYPE

Instance Attribute Summary collapse

Attributes inherited from Option

#copied, #length, #option_class, #type

Instance Method Summary collapse

Methods inherited from Option

build, #initialize, #to_s, types

Methods included from Types::Fieldable

#format_inspect, #read, #sz, #to_s, #type_name

Methods inherited from Types::Fields

#[], #[]=, #bits_on, define_bit_fields_on, define_field, define_field_after, define_field_before, #fields, fields, inherited, #initialize, #inspect, #offset_of, #optional?, #optional_fields, #present?, #read, remove_bit_fields_on, remove_field, #sz, #to_h, #to_s, update_field

Constructor Details

This class inherits a constructor from PacketGen::Header::IP::Option

Instance Attribute Details

#data ⇒ Types::Array<IP::Addr>

Array of IP addresses

Returns:



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# File 'lib/packetgen/header/ip/option.rb', line 163

define_field :data, ArrayOfAddr, builder: ->(h, t) { t.new(length_from: -> { h.length - 3 }) }

#pointer ⇒ Integer

8-bit pointer on next address

Returns:

  • (Integer) 


159
 
# File 'lib/packetgen/header/ip/option.rb', line 159

define_field :pointer, Types::Int8, default: 4

Instance Method Details

#pointed_addr ⇒ Addr

Get IP address pointer by #pointer

Returns:



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# File 'lib/packetgen/header/ip/option.rb', line 167

def pointed_addr
  data[pointer / 4 - 1]
end

#to_human ⇒ String

Get a human readable string

Returns:

  • (String) 


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# File 'lib/packetgen/header/ip/option.rb', line 173

def to_human
  str = self.class.to_s.sub(/.*::/, '')
  str << ':' << self[:data].to_human
end