# File lib/chef_zero/socketless_server_map.rb, line 58
    def register_no_listen_server(server)
      MUTEX.synchronize do
        1.upto(1000) do |port|
          unless @servers_by_port.key?(port)
            @servers_by_port[port] = server
            return port
          end
        end
        raise NoSocketlessPortAvailable, "No socketless ports left to register"
      end
    end