lookup_ring_any

# File lib/rinda/ring.rb, line 198
    def lookup_ring_any(timeout=5)
      queue = Queue.new

      th = Thread.new do
        self.lookup_ring(timeout) do |ts|
          queue.push(ts)
        end
        queue.push(nil)
        while it = queue.pop
          @rings.push(it)
        end
      end
      
      @primary = queue.pop
      raise('RingNotFound') if @primary.nil?
      @primary
    end