request

# File lib/resolv.rb, line 644
      def request(sender, tout)
        timelimit = Time.now + tout
        sender.send
        while true
          now = Time.now
          timeout = timelimit - now
          if timeout <= 0
            raise ResolvTimeout
          end
          select_result = IO.select(@socks, nil, nil, timeout)
          if !select_result
            raise ResolvTimeout
          end
          begin
            reply, from = recv_reply(select_result[0])
          rescue Errno::ECONNREFUSED, # GNU/Linux, FreeBSD
                 Errno::ECONNRESET # Windows
            # No name server running on the server?
            # Don't wait anymore.
            raise ResolvTimeout
          end
          begin
            msg = Message.decode(reply)
          rescue DecodeError
            next # broken DNS message ignored
          end
          if s = @senders[[from,msg.id]]
            break
          else
            # unexpected DNS message ignored
          end
        end
        return msg, s.data
      end