Sha256: fc3d95a7b51dacb0c3d81302ddee57dc8c60536141588ec7bc26d377f8a41801
Contents?: true
Size: 1.36 KB
Versions: 15
Compression:
Stored size: 1.36 KB
Contents
# This file is part of PacketGen
# See https://github.com/sdaubert/packetgen for more informations
# Copyright (C) 2016 Sylvain Daubert <sylvain.daubert@laposte.net>
# This program is published under MIT license.
# frozen_string_literal: true
module PacketGen
module Header
# This module contains all MLDv2 specific classes.
# @author Sylvain Daubert
# @since 2.4.0
module MLDv2
# Encode value for MLDv2 Max Resp Code.
# Value may be encoded as a float, so some error may occur.
# See RFC 3810 §5.1.3
# @param [Integer] value value to encode
# @return [Integer]
def self.encode(value)
if value < 32_768
value
elsif value > 8_387_583
0xffff
else
exp = 0
value >>= 3
while value > 8_191
exp += 1
value >>= 1
end
0x8000 | ((exp & 7) << 12) | (value & 0xfff)
end
end
# Decode value for MLDv2 Max Resp Code.
# See RFC 3810 §5.1.3
# @param [Integer] value value to decode
# @return [Integer]
def self.decode(value)
if value < 32_768
value
else
mant = value & 0xfff
exp = (value >> 12) & 0x7
(0x1000 | mant) << (exp + 3)
end
end
end
end
end
require_relative 'mldv2/mlq'
require_relative 'mldv2/mlr'
Version data entries
15 entries across 15 versions & 1 rubygems