/// <summary>
/// This method sends a enquire_link packet synchronously over to the peer.
/// </summary>
/// <param name="pdu">enquire_link packet</param>
/// <returns>enquire_link_resp response</returns>
public enquire_link_resp EnquireLink(enquire_link pdu)
{
enquire_link_resp response = null;
PduSyncronizer sync = AddWaitingPdu(pdu);
if (sync != null)
{
if (IsBound && SendPdu(pdu))
{
if (sync.WaitForResponse())
{
response = sync.PduResponse as enquire_link_resp;
if (response == null)
{
response = new enquire_link_resp(pdu.SequenceNumber, sync.PduResponse.Status);
}
}
else
{
response = new enquire_link_resp(pdu.SequenceNumber, StatusCodes.ESME_RINVEXPIRY);
}
}
else
{
response = new enquire_link_resp(pdu.SequenceNumber, StatusCodes.ESME_RSUBMITFAIL);
}
FindAndRemoveWaitingPdu(pdu.SequenceNumber);
}
else
{
response = new enquire_link_resp(pdu.SequenceNumber, StatusCodes.ESME_RMSGQFUL);
}
return(response);
}
// Used to send Enquire Link messages to SMSC every enquireLinkSeconds_ seconds
private void OnEnquireLinkElapsedTimer(object source, ElapsedEventArgs e)
{
// Send if our session is still connected/bound
if ((smppSession_.IsConnected) && (smppSession_.IsBound))
{
enquire_link enquirePdu = new enquire_link();
smppSession_.BeginEnquireLink(enquirePdu, new AsyncCallback(EnquireLinkCallback));
}
}
/// <summary>
/// This method invokes the EnquireLink method asynchronously
/// </summary>
/// <param name="pdu">enquire_link PDU to send</param>
/// <param name="callback">Asynch callback</param>
/// <returns>IAsyncResult interface for monitoring</returns>
public IAsyncResult BeginEnquireLink(enquire_link pdu, AsyncCallback callback)
{
AsynchCall acr = new AsynchCall(callback, this);
return(acr.BeginInvoke(new EnquireLinkDelegate(EnquireLink), new object[] { pdu }));
}
/// <summary>
/// This processes the enquire_link PDU
/// </summary>
/// <param name="pdu">Protocol Data Unit being processed</param>
public virtual void Process(enquire_link pdu)
{
throw new InvalidSmppStateException("Session is not in the proper state for a enquire_link operation.");
}
/// <summary>
/// This processes the enquire_link PDU
/// </summary>
/// <param name="pdu"></param>
public override void Process(enquire_link pdu)
{
session_.SendPdu(new enquire_link_resp(pdu.SequenceNumber));
}
