Examples with InvalidPDUException org.smpp.pdu.InvalidPDUException used on opensource projects

Example 1 with InvalidPDUException

use of org.smpp.pdu.InvalidPDUException in project opensmpp by OpenSmpp.

the class Receiver method receiveAsync.

/**
 * This method receives a PDU from connection and stores it into
 * <code>pduQueue</code>. It's called from the <code>ReceiverBase</code>'s
 * p<code>process</code> method which is called in loop from
 * <code>ProcessingThread</code>'s <code>run</code> method.
 * <p>
 * If an exception occurs during receiving, depending on type
 * of the exception this method either just reports the exception to
 * debug & event objects or stops processing to indicate
 * that it isn't able to process the exception. The function
 * <code>setTermException</code> is then called with the caught exception.
 *
 * @see ReceiverBase#run()
 */
protected void receiveAsync() {
    PDU pdu = null;
    try {
        debug.write(DRXTXD2, "Receiver.receiveAsync() going to receive pdu.");
        pdu = receivePDUFromConnection(connection, unprocessed);
    // we must catch every exception as this is thread running
    // on the background and we don't want the thread to be terminated
    } catch (InvalidPDUException e) {
        // thrown when enough data were received but further parsing
        // required more than indicated by CommandLength, i.e. pdu is
        // corrupted or further parsing didn't find terminating zero
        // of a c-string i.e. pdu is corrupted
        // must send generic nack anyway
        event.write(e, "Receiver.receiveAsync(): received PDU is invalid.");
        PDU expdu = e.getPDU();
        int seqNr = expdu == null ? 0 : expdu.getSequenceNumber();
        if (automaticNack) {
            sendGenericNack(Data.ESME_RINVMSGLEN, seqNr);
        } else {
            pdu = new GenericNack(Data.ESME_RINVMSGLEN, seqNr);
        }
    } catch (UnknownCommandIdException e) {
        // if received unknown pdu, we must send generic nack
        event.write(e, "Receiver.receiveAsync(): Unknown command id.");
        if (automaticNack) {
            sendGenericNack(Data.ESME_RINVCMDID, e.getSequenceNumber());
        } else {
            pdu = new GenericNack(Data.ESME_RINVCMDID, e.getSequenceNumber());
        }
    } catch (TimeoutException e) {
        // too long had unprocessed data
        debug.write(DRXTX, "Receiver.receiveAsync() too long had an uncomplete message.");
    } catch (PDUException e) {
        // something wrong with the PDU
        event.write(e, "Receiver.receiveAsync()");
        PDU expdu = e.getPDU();
        int seqNr = expdu == null ? 0 : expdu.getSequenceNumber();
        if (automaticNack) {
            sendGenericNack(e.getErrorCode(), seqNr);
        } else {
            pdu = new GenericNack(e.getErrorCode(), seqNr);
        }
    } catch (Exception e) {
        // don't know what happen, let's end the show
        event.write(e, "Receiver.receiveAsync()");
        stopProcessing(e);
    }
    if (pdu != null) {
        debug.write(DRXTX, "Receiver.receiveAsync(): PDU received, processing " + pdu.debugString());
        if (asynchronous) {
            process(pdu);
        } else {
            enqueue(pdu);
        }
    }
}