A Resolv::DNS IPv6 address.

Methods
C
T
Constants
Regex_8Hex = /\A (?:[0-9A-Fa-f]{1,4}:){7} [0-9A-Fa-f]{1,4} \z/x
 

IPv6 address format a:b:c:d:e:f:g:h

Regex_CompressedHex = /\A ((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) :: ((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) \z/x
 

Compressed IPv6 address format a::b

Regex_6Hex4Dec = /\A ((?:[0-9A-Fa-f]{1,4}:){6,6}) (\d+)\.(\d+)\.(\d+)\.(\d+) \z/x
 

IPv4 mapped IPv6 address format a:b:c:d:e:f:w.x.y.z

Regex_CompressedHex4Dec = /\A ((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?) :: ((?:[0-9A-Fa-f]{1,4}:)*) (\d+)\.(\d+)\.(\d+)\.(\d+) \z/x
 

Compressed IPv4 mapped IPv6 address format a::b:w.x.y.z

Regex = / (?:#{Regex_8Hex}) | (?:#{Regex_CompressedHex}) | (?:#{Regex_6Hex4Dec}) | (?:#{Regex_CompressedHex4Dec})/x
 

A composite IPv6 address Regexp.

Attributes
[R] address

The raw IPv6 address as a String.

Class Public methods
create(arg)

Creates a new IPv6 address from arg which may be:

IPv6

returns arg.

String

arg must match one of the IPv6::Regex* constants

# File lib/resolv.rb, line 2443
def self.create(arg)
  case arg
  when IPv6
    return arg
  when String
    address = ''.b
    if Regex_8Hex =~ arg
      arg.scan(/[0-9A-Fa-f]+/) {|hex| address << [hex.hex].pack('n')}
    elsif Regex_CompressedHex =~ arg
      prefix = $1
      suffix = $2
      a1 = ''.b
      a2 = ''.b
      prefix.scan(/[0-9A-Fa-f]+/) {|hex| a1 << [hex.hex].pack('n')}
      suffix.scan(/[0-9A-Fa-f]+/) {|hex| a2 << [hex.hex].pack('n')}
      omitlen = 16 - a1.length - a2.length
      address << a1 << "\0" * omitlen << a2
    elsif Regex_6Hex4Dec =~ arg
      prefix, a, b, c, d = $1, $2.to_i, $3.to_i, $4.to_i, $5.to_i
      if (0..255) === a && (0..255) === b && (0..255) === c && (0..255) === d
        prefix.scan(/[0-9A-Fa-f]+/) {|hex| address << [hex.hex].pack('n')}
        address << [a, b, c, d].pack('CCCC')
      else
        raise ArgumentError.new("not numeric IPv6 address: " + arg)
      end
    elsif Regex_CompressedHex4Dec =~ arg
      prefix, suffix, a, b, c, d = $1, $2, $3.to_i, $4.to_i, $5.to_i, $6.to_i
      if (0..255) === a && (0..255) === b && (0..255) === c && (0..255) === d
        a1 = ''.b
        a2 = ''.b
        prefix.scan(/[0-9A-Fa-f]+/) {|hex| a1 << [hex.hex].pack('n')}
        suffix.scan(/[0-9A-Fa-f]+/) {|hex| a2 << [hex.hex].pack('n')}
        omitlen = 12 - a1.length - a2.length
        address << a1 << "\0" * omitlen << a2 << [a, b, c, d].pack('CCCC')
      else
        raise ArgumentError.new("not numeric IPv6 address: " + arg)
      end
    else
      raise ArgumentError.new("not numeric IPv6 address: " + arg)
    end
    return IPv6.new(address)
  else
    raise ArgumentError.new("cannot interpret as IPv6 address: #{arg.inspect}")
  end
end
Instance Public methods
to_name()

Turns this IPv6 address into a Resolv::DNS::Name.

# File lib/resolv.rb, line 2518
def to_name
  return DNS::Name.new(
    @address.unpack("H32")[0].split(//).reverse + ['ip6', 'arpa'])
end