diff options
Diffstat (limited to 'lib/resolv.rb')
-rw-r--r-- | lib/resolv.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/resolv.rb b/lib/resolv.rb index 3f3ed41a47..08bfde583b 100644 --- a/lib/resolv.rb +++ b/lib/resolv.rb @@ -1170,7 +1170,9 @@ class Resolv class Str # :nodoc: def initialize(string) @string = string - @downcase = string.downcase + # case insensivity of DNS labels doesn't apply non-ASCII characters. [RFC 4343] + # This assumes @string is given in ASCII compatible encoding. + @downcase = string.dup.force_encoding('ASCII-8BIT').downcase end attr_reader :string, :downcase |