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Size: 1.18 KB
Versions: 8
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Stored size: 1.18 KB
Contents
# coding: utf-8
# frozen_string_literal: true
# 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.
require 'socket'
module PacketGen
# Module handling some helper methods for protocols
# @author Sylvain Daubert
# @since 2.1.2
module Proto
# @private cache information used by {.getprotobyname} and
# {.getprotobynumber}
def self.prepare_cache
proto_constants = Socket.constants.grep(/IPPROTO_/)
@cache = {}
proto_constants.each do |const_sym|
name = const_sym.to_s[8..-1].downcase
number = Socket.const_get(const_sym)
@cache[name] = number
end
end
prepare_cache
# Get protocol number from its name
# @param [String] name
# @return [Integer,nil] return nil for unknown protocol names
def self.getprotobyname(name)
@cache[name]
end
# Get protocol name from its number
# @param [Integer] num
# @return [String,nil] return nil for unknown protocol numbers
def self.getprotobynumber(num)
@cache.key(num)
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems