From f562a7f7a032b381cdc8b897ec50ed220bcc9452 Mon Sep 17 00:00:00 2001
From: Mike Mackintosh <m@zyp.io>
Date: Sun, 22 Mar 2015 17:08:04 -0400
Subject: [PATCH] add multicast and loopback checks
---
lib/ipaddress/ipv4.rb | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/lib/ipaddress/ipv4.rb b/lib/ipaddress/ipv4.rb
index 38afbb1..6437810 100644
--- a/lib/ipaddress/ipv4.rb
+++ b/lib/ipaddress/ipv4.rb
@@ -598,6 +598,34 @@ module IPAddress;
[self.class.new("224.0.0.0/4")].any? {|i| i.include? self}
end
+ #
+ # Checks if an IPv4 address objects belongs
+ # to a multicast network RFC3171
+ #
+ # Example:
+ #
+ # ip = IPAddress "224.0.0.0/4"
+ # ip.multicast?
+ # #=> true
+ #
+ def multicast?
+ [self.class.new("224.0.0.0/4")].any? {|i| i.include? self}
+ end
+
+ #
+ # Checks if an IPv4 address objects belongs
+ # to a loopback network RFC1122
+ #
+ # Example:
+ #
+ # ip = IPAddress "127.0.0.1"
+ # ip.loopback?
+ # #=> true
+ #
+ def loopback?
+ [self.class.new("127.0.0.0/8")].any? {|i| i.include? self}
+ end
+
#
# Returns the IP address in in-addr.arpa format
# for DNS lookups
--
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