# File lib/mcollective/connector/activemq.rb, line 313
      def connection_headers
        headers = {"accept-version""accept-version" => "1.0"}

        heartbeat_interval = Integer(get_option("activemq.heartbeat_interval", 0))
        stomp_1_0_fallback = get_bool_option("activemq.stomp_1_0_fallback", true)

        headers[:host] = get_option("activemq.vhost", "mcollective")

        if heartbeat_interval > 0
          unless stomp_version_supports_heartbeat?
            raise("Setting STOMP 1.1 properties like heartbeat intervals require at least version 1.2.10 of the STOMP gem")
          end

          if heartbeat_interval < 30
            Log.warn("Connection heartbeat is set to %d, forcing to minimum value of 30s")
            heartbeat_interval = 30
          end

          heartbeat_interval = heartbeat_interval * 1000
          headers["heart-beat""heart-beat"] = "%d,%d" % [heartbeat_interval + 500, heartbeat_interval - 500]

          if stomp_1_0_fallback
            headers["accept-version""accept-version"] = "1.1,1.0"
          else
            headers["accept-version""accept-version"] = "1.1"
          end
        else
          if stomp_version_supports_heartbeat?
            Log.info("Connecting without STOMP 1.1 heartbeats, if you are using ActiveMQ 5.8 or newer consider setting plugin.activemq.heartbeat_interval")
          end
        end

        headers
      end