each_resource

# File lib/resolv.rb, line 476
    def each_resource(name, typeclass, &proc)
      lazy_initialize
      requester = make_requester
      senders = {}
      begin
        @config.resolv(name) {|candidate, tout, nameserver|
          msg = Message.new
          msg.rd = 1
          msg.add_question(candidate, typeclass)
          unless sender = senders[[candidate, nameserver]]
            sender = senders[[candidate, nameserver]] =
              requester.sender(msg, candidate, nameserver)
          end
          reply, reply_name = requester.request(sender, tout)
          case reply.rcode
          when RCode::NoError
            extract_resources(reply, reply_name, typeclass, &proc)
            return
          when RCode::NXDomain
            raise Config::NXDomain.new(reply_name.to_s)
          else
            raise Config::OtherResolvError.new(reply_name.to_s)
          end
        }
      ensure
        requester.close
      end
    end