static void subscribe(int domain_id, int sample_count)
    {
        // --- Create participant --- //

        /* To customize the participant QoS, use
           the configuration file USER_QOS_PROFILES.xml */
        DDS.DomainParticipant participant =
            DDS.DomainParticipantFactory.get_instance().create_participant(
                domain_id,
                DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
                null /* listener */,
                DDS.StatusMask.STATUS_MASK_NONE);
        if (participant == null) {
            shutdown(participant);
            throw new ApplicationException("create_participant error");
        }

        /* If you want to change the Participant's QoS programmatically rather
         * than using the XML file, you will need to add the following lines to
         * your code and comment out the create_participant call above.
         */
        /* By default, discovery will communicate via shared memory for
         * platforms that support it.  Because we disable shared memory on the
         * publishing side, we do so here to ensure the reader and writer
         * discover each other.
         */
        /* Get default participant QoS to customize */
        /*
        DDS.DomainParticipantQos participant_qos =
                new DDS.DomainParticipantQos();
        try {
            DDS.DomainParticipantFactory.get_instance().
                get_default_participant_qos(participant_qos);
        } catch (DDS.Exception e) {
            Console.WriteLine("get_default_participant_qos error {0}", e);
              throw e;
        }

        // By default, data will be sent via shared memory _and_ UDPv4.  Because
        // the flowcontroller limits writes across all interfaces, this halves
        // the effective send rate.  To avoid this, we enable only the UDPv4
        // transport

        participant_qos.transport_builtin.mask =
                (int) DDS.TransportBuiltinKind.TRANSPORTBUILTIN_UDPv4;

        // To create participant with default QoS, use
        // DDS_PARTICIPANT_QOS_DEFAULT instead of participant_qos

        DDS.DomainParticipant participant =
            DDS.DomainParticipantFactory.get_instance().create_participant(
                domain_id,
                participant_qos,
                null,
                DDS.StatusMask.STATUS_MASK_NONE);
        if (participant == null) {
            shutdown(participant);
            throw new ApplicationException("create_participant error");
        }
        */
        /* End changes for custom_flowcontroller */
        // --- Create subscriber --- //

        /* To customize the subscriber QoS, use
           the configuration file USER_QOS_PROFILES.xml */
        DDS.Subscriber subscriber = participant.create_subscriber(
            DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
            null /* listener */,
            DDS.StatusMask.STATUS_MASK_NONE);
        if (subscriber == null) {
            shutdown(participant);
            throw new ApplicationException("create_subscriber error");
        }

        // --- Create topic --- //

        /* Register the type before creating the topic */
        System.String type_name = cfcTypeSupport.get_type_name();
        try {
            cfcTypeSupport.register_type(
                participant, type_name);
        }
        catch(DDS.Exception e) {
            Console.WriteLine("register_type error {0}", e);
            shutdown(participant);
            throw e;
        }

        /* To customize the topic QoS, use
           the configuration file USER_QOS_PROFILES.xml */
        DDS.Topic topic = participant.create_topic(
            "Example cfc",
            type_name,
            DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
            null /* listener */,
            DDS.StatusMask.STATUS_MASK_NONE);
        if (topic == null) {
            shutdown(participant);
            throw new ApplicationException("create_topic error");
        }

        // --- Create reader --- //

        /* Create a data reader listener */
        cfcListener reader_listener =
            new cfcListener();

        /* To customize the data reader QoS, use
           the configuration file USER_QOS_PROFILES.xml */
        DDS.DataReader reader = subscriber.create_datareader(
            topic,
            DDS.Subscriber.DATAREADER_QOS_DEFAULT,
            reader_listener,
            DDS.StatusMask.STATUS_MASK_ALL);
        if (reader == null) {
            shutdown(participant);
            reader_listener = null;
            throw new ApplicationException("create_datareader error");
        }

        // --- Wait for data --- //

        /* Main loop */
        const System.Int32 receive_period = 1000; // milliseconds
        for (int count=0;
             (sample_count == 0) || (count < sample_count);
             ++count) {

            System.Threading.Thread.Sleep(receive_period);
        }

        // --- Shutdown --- //

        /* Delete all entities */
        shutdown(participant);
        reader_listener = null;
    }
    static void subscribe(int domain_id, int sample_count)
    {
        // --- Create participant --- //

        /* To customize the participant QoS, use
         * the configuration file USER_QOS_PROFILES.xml */
        DDS.DomainParticipant participant =
            DDS.DomainParticipantFactory.get_instance().create_participant(
                domain_id,
                DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
                null /* listener */,
                DDS.StatusMask.STATUS_MASK_NONE);
        if (participant == null)
        {
            shutdown(participant);
            throw new ApplicationException("create_participant error");
        }

        /* If you want to change the Participant's QoS programmatically rather
         * than using the XML file, you will need to add the following lines to
         * your code and comment out the create_participant call above.
         */
        /* By default, discovery will communicate via shared memory for
         * platforms that support it.  Because we disable shared memory on the
         * publishing side, we do so here to ensure the reader and writer
         * discover each other.
         */
        /* Get default participant QoS to customize */

/*
 *      DDS.DomainParticipantQos participant_qos =
 *              new DDS.DomainParticipantQos();
 *      try {
 *          DDS.DomainParticipantFactory.get_instance().
 *              get_default_participant_qos(participant_qos);
 *      } catch (DDS.Exception e) {
 *          Console.WriteLine("get_default_participant_qos error {0}", e);
 *            throw e;
 *      }
 *
 *      // By default, data will be sent via shared memory _and_ UDPv4.  Because
 *      // the flowcontroller limits writes across all interfaces, this halves
 *      // the effective send rate.  To avoid this, we enable only the UDPv4
 *      // transport
 *
 *      participant_qos.transport_builtin.mask =
 *              (int) DDS.TransportBuiltinKind.TRANSPORTBUILTIN_UDPv4;
 *
 *      // To create participant with default QoS, use
 *      // DDS_PARTICIPANT_QOS_DEFAULT instead of participant_qos
 *
 *      DDS.DomainParticipant participant =
 *          DDS.DomainParticipantFactory.get_instance().create_participant(
 *              domain_id,
 *              participant_qos,
 *              null,
 *              DDS.StatusMask.STATUS_MASK_NONE);
 *      if (participant == null) {
 *          shutdown(participant);
 *          throw new ApplicationException("create_participant error");
 *      }
 */
        /* End changes for custom_flowcontroller */
        // --- Create subscriber --- //

        /* To customize the subscriber QoS, use
         * the configuration file USER_QOS_PROFILES.xml */
        DDS.Subscriber subscriber = participant.create_subscriber(
            DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
            null /* listener */,
            DDS.StatusMask.STATUS_MASK_NONE);
        if (subscriber == null)
        {
            shutdown(participant);
            throw new ApplicationException("create_subscriber error");
        }

        // --- Create topic --- //

        /* Register the type before creating the topic */
        System.String type_name = cfcTypeSupport.get_type_name();
        try {
            cfcTypeSupport.register_type(
                participant, type_name);
        }
        catch (DDS.Exception e) {
            Console.WriteLine("register_type error {0}", e);
            shutdown(participant);
            throw e;
        }

        /* To customize the topic QoS, use
         * the configuration file USER_QOS_PROFILES.xml */
        DDS.Topic topic = participant.create_topic(
            "Example cfc",
            type_name,
            DDS.DomainParticipant.TOPIC_QOS_DEFAULT,
            null /* listener */,
            DDS.StatusMask.STATUS_MASK_NONE);
        if (topic == null)
        {
            shutdown(participant);
            throw new ApplicationException("create_topic error");
        }

        // --- Create reader --- //

        /* Create a data reader listener */
        cfcListener reader_listener =
            new cfcListener();

        /* To customize the data reader QoS, use
         * the configuration file USER_QOS_PROFILES.xml */
        DDS.DataReader reader = subscriber.create_datareader(
            topic,
            DDS.Subscriber.DATAREADER_QOS_DEFAULT,
            reader_listener,
            DDS.StatusMask.STATUS_MASK_ALL);
        if (reader == null)
        {
            shutdown(participant);
            reader_listener = null;
            throw new ApplicationException("create_datareader error");
        }

        // --- Wait for data --- //

        /* Main loop */
        const System.Int32 receive_period = 1000; // milliseconds

        for (int count = 0;
             (sample_count == 0) || (count < sample_count);
             ++count)
        {
            System.Threading.Thread.Sleep(receive_period);
        }

        // --- Shutdown --- //

        /* Delete all entities */
        shutdown(participant);
        reader_listener = null;
    }