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Contents
#Author: Piotr Wojcieszonek
#e-mail: piotr@wojcieszonek.pl
# Copyright 23.03.2016 by Piotr Wojcieszonek
require_relative 'option'
require_relative 'type/raw'
module Lib
module DHCP
class Option91 < Option
# This option allows the receiver to determine the time of the
# most recent access of the client. It is particularly useful
# when DHCPLEASEACTIVE messages from two different DHCP servers
# need to be compared, although it can be useful in other
# situations. The value is a duration in seconds from the
# current time into the past when this IP address was most
# recently the subject of communication between the client and
# the DHCP server.
# The code for the this option is 91. The length of the this option is 4 octets.
def_delegators :@payload, :to_s
def initialize(time)
super CLIENT_LAST_TRANSACTION_TIME, time.to_i
end
def payload=(time)
@payload = time.to_i
end
def pack
[@oid, 4, @payload].pack('C2N')
end
def len
4
end
alias_method :time, :payload
alias_method :time=, :payload=
private
def self.unpack(oid, len, payload)
raise ArgumentError, "OID Mismatch for #{NAME[oid]} - #{oid}" unless oid.to_i == CLIENT_LAST_TRANSACTION_TIME
raise ArgumentError, "Wrong #{NAME[oid]} length - #{len}" unless len == 4
self.new payload.unpack('N').first.to_i
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems