How to use com.cloudhopper.smpp.pdu

@Override
public PduResponse firePduRequestReceived(PduRequest request) {
  PduResponse response;
  try {
    if (request instanceof DeliverSm) {
      String sourceAddress = ((DeliverSm) request).getSourceAddress().getAddress();
      String message = CharsetUtil.decode(((DeliverSm) request).getShortMessage(),
          smppClient.mapDataCodingToCharset(((DeliverSm) request).getDataCoding()));
      LOGGER.info("SMS Message Received: " + message.trim() + ", Source Address: " + sourceAddress);
      boolean isDeliveryReceipt;
      if (smppClient.getDetectDlrByOpts()) {
        isDeliveryReceipt = request.getOptionalParameters() != null;
      } else {
        isDeliveryReceipt = SmppUtil.isMessageTypeAnyDeliveryReceipt(((DeliverSm) request).getEsmClass());
      }
      if (!isDeliveryReceipt) {
        TextMessageEventHandler.handleTextMessage(sourceAddress, message);
      }
    }
    response = request.createResponse();
  } catch (Exception error) {
    LOGGER.warn("SMS receiving error", error);
    response = request.createResponse();
    response.setResultMessage(error.getMessage());
    response.setCommandStatus(SmppConstants.STATUS_UNKNOWNERR);
  }
  return response;
}

@Override
public void run() {
  SmppSession smppSession = smppClient.getSession();
  if (smppSession != null && smppSession.isBound()) {
    try {
      smppSession.enquireLink(new EnquireLink(), enquireLinkTimeout);
    } catch (SmppTimeoutException | SmppChannelException
        | RecoverablePduException | UnrecoverablePduException error) {
      LOGGER.warn("Enquire link failed, executing reconnect: ", error);
      smppClient.scheduleReconnect();
    } catch (InterruptedException error) {
      LOGGER.info("Enquire link interrupted, probably killed by reconnecting");
    }
  } else {
    LOGGER.warn("Enquire link running while session is not connected");
  }
}

if (getSession() != null && getSession().isBound()) {
  try {
    SubmitSm submit = new SubmitSm();
    byte[] textBytes;
    textBytes = CharsetUtil.encode(message, command ? commandsCharsetName : notificationsCharsetName);
    submit.setDataCoding(command ? commandsDataCoding : notificationsDataCoding);
    if (requestDlr) {
      submit.setRegisteredDelivery(SmppConstants.REGISTERED_DELIVERY_SMSC_RECEIPT_REQUESTED);
      submit.addOptionalParameter(new Tlv(SmppConstants.TAG_MESSAGE_PAYLOAD, textBytes,
        "message_payload"));
    } else {
      submit.setShortMessage(textBytes);
    submit.setSourceAddress(command ? new Address(commandSourceTon, commandSourceNpi, commandSourceAddress)
        : new Address(sourceTon, sourceNpi, sourceAddress));
    submit.setDestAddress(new Address(destTon, destNpi, destAddress));
    SubmitSmResp submitResponce = getSession().submit(submit, submitTimeout);
    if (submitResponce.getCommandStatus() == SmppConstants.STATUS_OK) {
      LOGGER.info("SMS submitted, message id: " + submitResponce.getMessageId());
    } else {
      throw new IllegalStateException(submitResponce.getResultMessage());

public GenericNack createGenericNack(int commandStatus) {
  GenericNack nack = new GenericNack();
  nack.setCommandStatus(commandStatus);
  nack.setSequenceNumber(this.getSequenceNumber());
  return nack;
}

@Override
public DeliverSmResp createResponse() {
  DeliverSmResp resp = new DeliverSmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public BindTransmitterResp createResponse() {
  BindTransmitterResp resp = new BindTransmitterResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public GenericNack createResponse() {
  GenericNack resp = new GenericNack();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public BindTransceiverResp createResponse() {
  BindTransceiverResp resp = new BindTransceiverResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public SubmitSmResp createResponse() {
  SubmitSmResp resp = new SubmitSmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public DataSmResp createResponse() {
  DataSmResp resp = new DataSmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public EnquireLinkResp createResponse() {
  EnquireLinkResp resp = new EnquireLinkResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public UnbindResp createResponse() {
  UnbindResp resp = new UnbindResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public QuerySmResp createResponse() {
  QuerySmResp resp = new QuerySmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public CancelSmResp createResponse() {
  CancelSmResp resp = new CancelSmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public ReplaceSmResp createResponse() {
  ReplaceSmResp resp = new ReplaceSmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public BindReceiverResp createResponse() {
  BindReceiverResp resp = new BindReceiverResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public DeliverSmResp createResponse() {
  DeliverSmResp resp = new DeliverSmResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public BindTransmitterResp createResponse() {
  BindTransmitterResp resp = new BindTransmitterResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public GenericNack createResponse() {
  GenericNack resp = new GenericNack();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}

@Override
public BindTransceiverResp createResponse() {
  BindTransceiverResp resp = new BindTransceiverResp();
  resp.setSequenceNumber(this.getSequenceNumber());
  return resp;
}