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simple resolver class that lookup AAAA records prior to A records
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resolv-ipv6favor¶ ↑

Resolver class for Ruby. It looks up AAAA record first, then A record. Ruby’s default resolver class (Resolv) looks up A record first, then AAAA record.

Usage¶ ↑

for example, assume that “ipv6.example.net” have these records on DNS,

ipv6.example.net.           80000   IN      A       192.0.2.1
ipv6.example.net.           80000   IN      AAAA    2001:db8::1

then ‘Resolv’ class (in the Ruby Standard Library) behaves:

require 'resolv'

Resolv.getaddresses("ipv6.example.net") #=> ["192.0.2.1"]
Resolv.getaddress("ipv6.example.net")   #=> ["192.0.2.1", "2001:db8::1"]

If you want to lookup AAAA record prior to A record, install ‘resolv-ipv6favor’, then:

require 'resolv-ipv6favor'

IPv6FavorResolv.getaddresses("ipv6.example.net") #=> ["2001:db8::1"]
IPv6FavorResolv.getaddress("ipv6.example.net")   #=> ["2001:db8::1", "192.0.2.1"]

Note on Patches/Pull Requests¶ ↑

  • Fork the project.

  • Make your feature addition or bug fix.

  • Add tests for it. This is important so I don’t break it in a future version unintentionally.

  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)

  • Send me a pull request. Bonus points for topic branches.

Copyright © 2010 Ryosuke Yamazaki. See LICENSE for details.