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#Author: Piotr Wojcieszonek
#e-mail: piotr@wojcieszonek.pl
# Copyright 22.03.2016 by Piotr Wojcieszonek
require_relative 'option'
module Lib
module DHCP
class Option57 < Option
# Maximum DHCP Message Size. The code for this option is 57, and its length is 2.
# The minimum legal value is 576 octets.
def_delegators :@payload, :to_s
def initialize(message_size)
# raise ArgumentError, "Minimal message size is 576. #{message_size} given" unless message_size.to_i >= 576
super MAX_MESSAGE_SIZE, message_size.to_i
end
def pack
[@oid, 2, @payload.to_i].pack('C2n')
end
def len
2
end
def payload=(message_size)
# raise ArgumentError, "Minimal message size is 576. #{message_size} given" unless message_size.to_i >= 576
@payload = message_size.to_i
end
alias_method :max_message_size, :payload
alias_method :max_message_size=, :payload=
private
def self.unpack(oid, len, payload)
raise ArgumentError, "OID Mismatch for #{NAME[oid]} - #{oid}" unless oid.to_i == MAX_MESSAGE_SIZE
raise ArgumentError, "Wrong #{NAME[oid]} length - #{len}" unless len == 2
message_size = payload.unpack('n').first.to_i
#raise ArgumentError, "Minimal message size is 576. #{message_size} given" unless message_size.to_i >= 576
self.new message_size
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems