Esempio n. 1
0
void handler_i_have(
    uint8_t * service_request,
    uint16_t service_len,
    BACNET_ADDRESS * src)
{
    int len = 0;
    BACNET_I_HAVE_DATA data;

    (void) service_len;
    (void) src;
    len = ihave_decode_service_request(service_request, service_len, &data);
    if (len != -1) {
#if PRINT_ENABLED
        fprintf(stderr, "I-Have: %s %d from %s %u!\r\n",
            bactext_object_type_name(data.object_id.type),
            data.object_id.instance,
            bactext_object_type_name(data.device_id.type),
            data.device_id.instance);
#endif
    } else {
#if PRINT_ENABLED
        fprintf(stderr, "I-Have: received, but unable to decode!\n");
#endif
    }

    return;
}
Esempio n. 2
0
static void cov_lifetime_expiration_handler(
    unsigned index,
    uint32_t elapsed_seconds,
    uint32_t lifetime_seconds)
{
    if (index < MAX_COV_SUBCRIPTIONS) {
        /* handle lifetime expiration */
        if (lifetime_seconds >= elapsed_seconds) {
            COV_Subscriptions[index].lifetime -= elapsed_seconds;
#if 0
            fprintf(stderr, "COVtimer: subscription[%d].lifetime=%lu\n", index,
                (unsigned long) COV_Subscriptions[index].lifetime);
#endif
        } else {
            COV_Subscriptions[index].lifetime = 0;
        }
        if (COV_Subscriptions[index].lifetime == 0) {
            /* expire the subscription */
#if PRINT_ENABLED
            fprintf(stderr, "COVtimer: PID=%u ",
                COV_Subscriptions[index].subscriberProcessIdentifier);
            fprintf(stderr, "%s %u ",
                bactext_object_type_name(COV_Subscriptions[index].
                    monitoredObjectIdentifier.type),
                COV_Subscriptions[index].monitoredObjectIdentifier.instance);
            fprintf(stderr, "time remaining=%u seconds ",
                COV_Subscriptions[index].lifetime);
            fprintf(stderr, "\n");
#endif
            COV_Subscriptions[index].flag.valid = false;
            COV_Subscriptions[index].dest_index = -1;
            cov_address_remove_unused();
            if (COV_Subscriptions[index].flag.issueConfirmedNotifications) {
                if (COV_Subscriptions[index].invokeID) {
                    tsm_free_invoke_id(COV_Subscriptions[index].invokeID);
                    COV_Subscriptions[index].invokeID = 0;
                }
            }
        }
    }
}
Esempio n. 3
0
/** Handler for an Unconfirmed COV Notification.
 * @ingroup DSCOV
 * Decodes the received list of Properties to update,
 * and print them out with the subscription information.
 * @note Nothing is specified in BACnet about what to do with the
 *       information received from Unconfirmed COV Notifications.
 *
 * @param service_request [in] The contents of the service request.
 * @param service_len [in] The length of the service_request.
 * @param src [in] BACNET_ADDRESS of the source of the message (unused)
 */
void handler_ucov_notification(
    uint8_t * service_request,
    uint16_t service_len,
    BACNET_ADDRESS * src)
{
    BACNET_COV_DATA cov_data;
    BACNET_PROPERTY_VALUE property_value[MAX_COV_PROPERTIES];
    BACNET_PROPERTY_VALUE *pProperty_value = NULL;
    int len = 0;
    unsigned index = 0;

    /* src not needed for this application */
    src = src;
    /* create linked list to store data if more
       than one property value is expected */
    pProperty_value = &property_value[0];
    while (pProperty_value) {
        index++;
        if (index < MAX_COV_PROPERTIES) {
            pProperty_value->next = &property_value[index];
        } else {
            pProperty_value->next = NULL;
        }
        pProperty_value = pProperty_value->next;
    }
    cov_data.listOfValues = &property_value[0];
#if PRINT_ENABLED
    fprintf(stderr, "UCOV: Received Notification!\n");
#endif
    /* decode the service request only */
    len =
        cov_notify_decode_service_request(service_request, service_len,
        &cov_data);
#if PRINT_ENABLED
    if (len > 0) {
        fprintf(stderr, "UCOV: PID=%u ", cov_data.subscriberProcessIdentifier);
        fprintf(stderr, "instance=%u ", cov_data.initiatingDeviceIdentifier);
        fprintf(stderr, "%s %u ",
            bactext_object_type_name(cov_data.monitoredObjectIdentifier.type),
            cov_data.monitoredObjectIdentifier.instance);
        fprintf(stderr, "time remaining=%u seconds ", cov_data.timeRemaining);
        fprintf(stderr, "\n");
        pProperty_value = &property_value[0];
        while (pProperty_value) {
            fprintf(stderr, "UCOV: ");
            if (pProperty_value->propertyIdentifier < 512) {
                fprintf(stderr, "%s ",
                    bactext_property_name
                    (pProperty_value->propertyIdentifier));
            } else {
                fprintf(stderr, "proprietary %u ",
                    pProperty_value->propertyIdentifier);
            }
            if (pProperty_value->propertyArrayIndex != BACNET_ARRAY_ALL) {
                fprintf(stderr, "%u ", pProperty_value->propertyArrayIndex);
            }
            fprintf(stderr, "\n");
            pProperty_value = pProperty_value->next;
        }
    } else {
        fprintf(stderr, "UCOV: Unable to decode service request!\n");
    }
#endif
}
Esempio n. 4
0
void Analog_Value_Intrinsic_Reporting(
    uint32_t object_instance)
{
#if defined(INTRINSIC_REPORTING)
    BACNET_EVENT_NOTIFICATION_DATA event_data;
    BACNET_CHARACTER_STRING msgText;
    ANALOG_VALUE_DESCR *CurrentAV;
    unsigned int object_index;
    uint8_t FromState = 0;
    uint8_t ToState;
    float ExceededLimit = 0.0f;
    float PresentVal = 0.0f;
    bool SendNotify = false;


    object_index = Analog_Value_Instance_To_Index(object_instance);
    if (object_index < MAX_ANALOG_VALUES)
        CurrentAV = &AV_Descr[object_index];
    else
        return;

    /* check limits */
    if (!CurrentAV->Limit_Enable)
        return; /* limits are not configured */


    if (CurrentAV->Ack_notify_data.bSendAckNotify) {
        /* clean bSendAckNotify flag */
        CurrentAV->Ack_notify_data.bSendAckNotify = false;
        /* copy toState */
        ToState = CurrentAV->Ack_notify_data.EventState;

#if PRINT_ENABLED
        fprintf(stderr, "Send Acknotification for (%s,%d).\n",
            bactext_object_type_name(OBJECT_ANALOG_VALUE), object_instance);
#endif /* PRINT_ENABLED */

        characterstring_init_ansi(&msgText, "AckNotification");

        /* Notify Type */
        event_data.notifyType = NOTIFY_ACK_NOTIFICATION;

        /* Send EventNotification. */
        SendNotify = true;
    } else {
        /* actual Present_Value */
        PresentVal = Analog_Value_Present_Value(object_instance);
        FromState = CurrentAV->Event_State;
        switch (CurrentAV->Event_State) {
            case EVENT_STATE_NORMAL:
                /* A TO-OFFNORMAL event is generated under these conditions:
                   (a) the Present_Value must exceed the High_Limit for a minimum
                   period of time, specified in the Time_Delay property, and
                   (b) the HighLimitEnable flag must be set in the Limit_Enable property, and
                   (c) the TO-OFFNORMAL flag must be set in the Event_Enable property. */
                if ((PresentVal > CurrentAV->High_Limit) &&
                    ((CurrentAV->Limit_Enable & EVENT_HIGH_LIMIT_ENABLE) ==
                        EVENT_HIGH_LIMIT_ENABLE) &&
                    ((CurrentAV->Event_Enable & EVENT_ENABLE_TO_OFFNORMAL) ==
                        EVENT_ENABLE_TO_OFFNORMAL)) {
                    if (!CurrentAV->Remaining_Time_Delay)
                        CurrentAV->Event_State = EVENT_STATE_HIGH_LIMIT;
                    else
                        CurrentAV->Remaining_Time_Delay--;
                    break;
                }

                /* A TO-OFFNORMAL event is generated under these conditions:
                   (a) the Present_Value must exceed the Low_Limit plus the Deadband
                   for a minimum period of time, specified in the Time_Delay property, and
                   (b) the LowLimitEnable flag must be set in the Limit_Enable property, and
                   (c) the TO-NORMAL flag must be set in the Event_Enable property. */
                if ((PresentVal < CurrentAV->Low_Limit) &&
                    ((CurrentAV->Limit_Enable & EVENT_LOW_LIMIT_ENABLE) ==
                        EVENT_LOW_LIMIT_ENABLE) &&
                    ((CurrentAV->Event_Enable & EVENT_ENABLE_TO_OFFNORMAL) ==
                        EVENT_ENABLE_TO_OFFNORMAL)) {
                    if (!CurrentAV->Remaining_Time_Delay)
                        CurrentAV->Event_State = EVENT_STATE_LOW_LIMIT;
                    else
                        CurrentAV->Remaining_Time_Delay--;
                    break;
                }
                /* value of the object is still in the same event state */
                CurrentAV->Remaining_Time_Delay = CurrentAV->Time_Delay;
                break;

            case EVENT_STATE_HIGH_LIMIT:
                /* Once exceeded, the Present_Value must fall below the High_Limit minus
                   the Deadband before a TO-NORMAL event is generated under these conditions:
                   (a) the Present_Value must fall below the High_Limit minus the Deadband
                   for a minimum period of time, specified in the Time_Delay property, and
                   (b) the HighLimitEnable flag must be set in the Limit_Enable property, and
                   (c) the TO-NORMAL flag must be set in the Event_Enable property. */
                if ((PresentVal < CurrentAV->High_Limit - CurrentAV->Deadband)
                    && ((CurrentAV->Limit_Enable & EVENT_HIGH_LIMIT_ENABLE) ==
                        EVENT_HIGH_LIMIT_ENABLE) &&
                    ((CurrentAV->Event_Enable & EVENT_ENABLE_TO_NORMAL) ==
                        EVENT_ENABLE_TO_NORMAL)) {
                    if (!CurrentAV->Remaining_Time_Delay)
                        CurrentAV->Event_State = EVENT_STATE_NORMAL;
                    else
                        CurrentAV->Remaining_Time_Delay--;
                    break;
                }
                /* value of the object is still in the same event state */
                CurrentAV->Remaining_Time_Delay = CurrentAV->Time_Delay;
                break;

            case EVENT_STATE_LOW_LIMIT:
                /* Once the Present_Value has fallen below the Low_Limit,
                   the Present_Value must exceed the Low_Limit plus the Deadband
                   before a TO-NORMAL event is generated under these conditions:
                   (a) the Present_Value must exceed the Low_Limit plus the Deadband
                   for a minimum period of time, specified in the Time_Delay property, and
                   (b) the LowLimitEnable flag must be set in the Limit_Enable property, and
                   (c) the TO-NORMAL flag must be set in the Event_Enable property. */
                if ((PresentVal > CurrentAV->Low_Limit + CurrentAV->Deadband)
                    && ((CurrentAV->Limit_Enable & EVENT_LOW_LIMIT_ENABLE) ==
                        EVENT_LOW_LIMIT_ENABLE) &&
                    ((CurrentAV->Event_Enable & EVENT_ENABLE_TO_NORMAL) ==
                        EVENT_ENABLE_TO_NORMAL)) {
                    if (!CurrentAV->Remaining_Time_Delay)
                        CurrentAV->Event_State = EVENT_STATE_NORMAL;
                    else
                        CurrentAV->Remaining_Time_Delay--;
                    break;
                }
                /* value of the object is still in the same event state */
                CurrentAV->Remaining_Time_Delay = CurrentAV->Time_Delay;
                break;

            default:
                return; /* shouldn't happen */
        }       /* switch (FromState) */

        ToState = CurrentAV->Event_State;

        if (FromState != ToState) {
            /* Event_State has changed.
               Need to fill only the basic parameters of this type of event.
               Other parameters will be filled in common function. */

            switch (ToState) {
                case EVENT_STATE_HIGH_LIMIT:
                    ExceededLimit = CurrentAV->High_Limit;
                    characterstring_init_ansi(&msgText, "Goes to high limit");
                    break;

                case EVENT_STATE_LOW_LIMIT:
                    ExceededLimit = CurrentAV->Low_Limit;
                    characterstring_init_ansi(&msgText, "Goes to low limit");
                    break;

                case EVENT_STATE_NORMAL:
                    if (FromState == EVENT_STATE_HIGH_LIMIT) {
                        ExceededLimit = CurrentAV->High_Limit;
                        characterstring_init_ansi(&msgText,
                            "Back to normal state from high limit");
                    } else {
                        ExceededLimit = CurrentAV->Low_Limit;
                        characterstring_init_ansi(&msgText,
                            "Back to normal state from low limit");
                    }
                    break;

                default:
                    ExceededLimit = 0;
                    break;
            }   /* switch (ToState) */

#if PRINT_ENABLED
            fprintf(stderr, "Event_State for (%s,%d) goes from %s to %s.\n",
                bactext_object_type_name(OBJECT_ANALOG_VALUE), object_instance,
                bactext_event_state_name(FromState),
                bactext_event_state_name(ToState));
#endif /* PRINT_ENABLED */

            /* Notify Type */
            event_data.notifyType = CurrentAV->Notify_Type;

            /* Send EventNotification. */
            SendNotify = true;
        }
    }


    if (SendNotify) {
        /* Event Object Identifier */
        event_data.eventObjectIdentifier.type = OBJECT_ANALOG_VALUE;
        event_data.eventObjectIdentifier.instance = object_instance;

        /* Time Stamp */
        event_data.timeStamp.tag = TIME_STAMP_DATETIME;
        Device_getCurrentDateTime(&event_data.timeStamp.value.dateTime);

        if (event_data.notifyType != NOTIFY_ACK_NOTIFICATION) {
            /* fill Event_Time_Stamps */
            switch (ToState) {
                case EVENT_STATE_HIGH_LIMIT:
                case EVENT_STATE_LOW_LIMIT:
                    CurrentAV->Event_Time_Stamps[TRANSITION_TO_OFFNORMAL] =
                        event_data.timeStamp.value.dateTime;
                    break;

                case EVENT_STATE_FAULT:
                    CurrentAV->Event_Time_Stamps[TRANSITION_TO_FAULT] =
                        event_data.timeStamp.value.dateTime;
                    break;

                case EVENT_STATE_NORMAL:
                    CurrentAV->Event_Time_Stamps[TRANSITION_TO_NORMAL] =
                        event_data.timeStamp.value.dateTime;
                    break;
            }
        }

        /* Notification Class */
        event_data.notificationClass = CurrentAV->Notification_Class;

        /* Event Type */
        event_data.eventType = EVENT_OUT_OF_RANGE;

        /* Message Text */
        event_data.messageText = &msgText;

        /* Notify Type */
        /* filled before */

        /* From State */
        if (event_data.notifyType != NOTIFY_ACK_NOTIFICATION)
            event_data.fromState = FromState;

        /* To State */
        event_data.toState = CurrentAV->Event_State;

        /* Event Values */
        if (event_data.notifyType != NOTIFY_ACK_NOTIFICATION) {
            /* Value that exceeded a limit. */
            event_data.notificationParams.outOfRange.exceedingValue =
                PresentVal;
            /* Status_Flags of the referenced object. */
            bitstring_init(&event_data.notificationParams.outOfRange.
                statusFlags);
            bitstring_set_bit(&event_data.notificationParams.outOfRange.
                statusFlags, STATUS_FLAG_IN_ALARM,
                CurrentAV->Event_State ? true : false);
            bitstring_set_bit(&event_data.notificationParams.outOfRange.
                statusFlags, STATUS_FLAG_FAULT, false);
            bitstring_set_bit(&event_data.notificationParams.outOfRange.
                statusFlags, STATUS_FLAG_OVERRIDDEN, false);
            bitstring_set_bit(&event_data.notificationParams.outOfRange.
                statusFlags, STATUS_FLAG_OUT_OF_SERVICE,
                CurrentAV->Out_Of_Service);
            /* Deadband used for limit checking. */
            event_data.notificationParams.outOfRange.deadband =
                CurrentAV->Deadband;
            /* Limit that was exceeded. */
            event_data.notificationParams.outOfRange.exceededLimit =
                ExceededLimit;
        }

        /* add data from notification class */
        Notification_Class_common_reporting_function(&event_data);

        /* Ack required */
        if ((event_data.notifyType != NOTIFY_ACK_NOTIFICATION) &&
            (event_data.ackRequired == true)) {
            switch (event_data.toState) {
                case EVENT_STATE_OFFNORMAL:
                case EVENT_STATE_HIGH_LIMIT:
                case EVENT_STATE_LOW_LIMIT:
                    CurrentAV->Acked_Transitions[TRANSITION_TO_OFFNORMAL].
                        bIsAcked = false;
                    CurrentAV->Acked_Transitions[TRANSITION_TO_OFFNORMAL].
                        Time_Stamp = event_data.timeStamp.value.dateTime;
                    break;

                case EVENT_STATE_FAULT:
                    CurrentAV->Acked_Transitions[TRANSITION_TO_FAULT].
                        bIsAcked = false;
                    CurrentAV->Acked_Transitions[TRANSITION_TO_FAULT].
                        Time_Stamp = event_data.timeStamp.value.dateTime;
                    break;

                case EVENT_STATE_NORMAL:
                    CurrentAV->Acked_Transitions[TRANSITION_TO_NORMAL].
                        bIsAcked = false;
                    CurrentAV->Acked_Transitions[TRANSITION_TO_NORMAL].
                        Time_Stamp = event_data.timeStamp.value.dateTime;
                    break;
            }
        }
    }
#endif /* defined(INTRINSIC_REPORTING) */
}
Esempio n. 5
0
/* for debugging... */
void rpm_ack_print_data(
    BACNET_READ_ACCESS_DATA * rpm_data)
{
    BACNET_OBJECT_PROPERTY_VALUE object_value;  /* for bacapp printing */
    BACNET_PROPERTY_REFERENCE *listOfProperties;
    BACNET_APPLICATION_DATA_VALUE *value;
    bool array_value = false;

    if (rpm_data) {
#if PRINT_ENABLED
        fprintf(stdout, "%s #%lu\r\n",
            bactext_object_type_name(rpm_data->object_type),
            (unsigned long) rpm_data->object_instance);
        fprintf(stdout, "{\r\n");
#endif
        listOfProperties = rpm_data->listOfProperties;
        while (listOfProperties) {
#if PRINT_ENABLED
            if (listOfProperties->propertyIdentifier < 512) {
                fprintf(stdout, "    %s: ",
                    bactext_property_name(listOfProperties->
                        propertyIdentifier));
            } else {
                fprintf(stdout, "    proprietary %u: ",
                    (unsigned) listOfProperties->propertyIdentifier);
            }
#endif
            if (listOfProperties->propertyArrayIndex != BACNET_ARRAY_ALL) {
#if PRINT_ENABLED
                fprintf(stdout, "[%d]", listOfProperties->propertyArrayIndex);
#endif
            }
            value = listOfProperties->value;
            if (value) {
#if PRINT_ENABLED
                if (value->next) {
                    fprintf(stdout, "{");
                    array_value = true;
                } else {
                    array_value = false;
                }
#endif
                object_value.object_type = rpm_data->object_type;
                object_value.object_instance = rpm_data->object_instance;
                while (value) {
                    object_value.object_property =
                        listOfProperties->propertyIdentifier;
                    object_value.array_index =
                        listOfProperties->propertyArrayIndex;
                    object_value.value = value;
                    bacapp_print_value(stdout, &object_value);
#if PRINT_ENABLED
                    if (value->next) {
                        fprintf(stdout, ",\r\n        ");
                    } else {
                        if (array_value) {
                            fprintf(stdout, "}\r\n");
                        } else {
                            fprintf(stdout, "\r\n");
                        }
                    }
#endif
                    value = value->next;
                }
            } else {
#if PRINT_ENABLED
                /* AccessError */
                fprintf(stdout, "BACnet Error: %s: %s\r\n",
                    bactext_error_class_name((int) listOfProperties->
                        error.error_class),
                    bactext_error_code_name((int) listOfProperties->
                        error.error_code));
#endif
            }
            listOfProperties = listOfProperties->next;
        }
#if PRINT_ENABLED
        fprintf(stdout, "}\r\n");
#endif
    }
}
Esempio n. 6
0
/** Handler for an Confirmed COV Notification.
 * @ingroup DSCOV
 * Decodes the received list of Properties to update,
 * and print them out with the subscription information.
 * @note Nothing is specified in BACnet about what to do with the
 *       information received from Confirmed COV Notifications.
 *
 * @param service_request [in] The contents of the service request.
 * @param service_len [in] The length of the service_request.
 * @param src [in] BACNET_ADDRESS of the source of the message
 * @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information
 *                          decoded from the APDU header of this message.
 */
void handler_ccov_notification(
    uint8_t * service_request,
    uint16_t service_len,
    BACNET_ADDRESS * src,
    BACNET_CONFIRMED_SERVICE_DATA * service_data)
{
    BACNET_NPDU_DATA npdu_data;
    BACNET_COV_DATA cov_data;
    BACNET_PROPERTY_VALUE property_value[MAX_COV_PROPERTIES];
    BACNET_PROPERTY_VALUE *pProperty_value = NULL;
    unsigned index = 0;
    int len = 0;
    int pdu_len = 0;
    int bytes_sent = 0;
    BACNET_ADDRESS my_address;

    /* create linked list to store data if more
       than one property value is expected */
    pProperty_value = &property_value[0];
    while (pProperty_value) {
        index++;
        if (index < MAX_COV_PROPERTIES) {
            pProperty_value->next = &property_value[index];
        } else {
            pProperty_value->next = NULL;
        }
        pProperty_value = pProperty_value->next;
    }
    cov_data.listOfValues = &property_value[0];
    /* encode the NPDU portion of the packet */
    datalink_get_my_address(&my_address);
    npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
    pdu_len =
        npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
        &npdu_data);
#if PRINT_ENABLED
    fprintf(stderr, "CCOV: Received Notification!\n");
#endif
    if (service_data->segmented_message) {
        len =
            abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id, ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
            true);
#if PRINT_ENABLED
        fprintf(stderr, "CCOV: Segmented message.  Sending Abort!\n");
#endif
        goto CCOV_ABORT;
    }
    /* decode the service request only */
    len =
        cov_notify_decode_service_request(service_request, service_len,
        &cov_data);
#if PRINT_ENABLED
    if (len > 0) {
        fprintf(stderr, "CCOV: PID=%u ", cov_data.subscriberProcessIdentifier);
        fprintf(stderr, "instance=%u ", cov_data.initiatingDeviceIdentifier);
        fprintf(stderr, "%s %u ",
            bactext_object_type_name(cov_data.monitoredObjectIdentifier.type),
            cov_data.monitoredObjectIdentifier.instance);
        fprintf(stderr, "time remaining=%u seconds ", cov_data.timeRemaining);
        fprintf(stderr, "\n");
        pProperty_value = &property_value[0];
        while (pProperty_value) {
            fprintf(stderr, "CCOV: ");
            if (pProperty_value->propertyIdentifier < 512) {
                fprintf(stderr, "%s ",
                    bactext_property_name
                    (pProperty_value->propertyIdentifier));
            } else {
                fprintf(stderr, "proprietary %u ",
                    pProperty_value->propertyIdentifier);
            }
            if (pProperty_value->propertyArrayIndex != BACNET_ARRAY_ALL) {
                fprintf(stderr, "%u ", pProperty_value->propertyArrayIndex);
            }
            fprintf(stderr, "\n");
            pProperty_value = pProperty_value->next;
        }
    }
#endif
    /* bad decoding or something we didn't understand - send an abort */
    if (len <= 0) {
        len =
            abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id, ABORT_REASON_OTHER, true);
#if PRINT_ENABLED
        fprintf(stderr, "CCOV: Bad Encoding. Sending Abort!\n");
#endif
        goto CCOV_ABORT;
    } else {
        len =
            encode_simple_ack(&Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id, SERVICE_CONFIRMED_COV_NOTIFICATION);
#if PRINT_ENABLED
        fprintf(stderr, "CCOV: Sending Simple Ack!\n");
#endif
    }
  CCOV_ABORT:
    pdu_len += len;
    bytes_sent =
        datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0],
        pdu_len);
#if PRINT_ENABLED
    if (bytes_sent <= 0) {
        fprintf(stderr, "CCOV: Failed to send PDU (%s)!\n", strerror(errno));
    }
#else
    bytes_sent = bytes_sent;
#endif

    return;
}