MC319Z: Unable to open connection to reader

Hello!

I'm developing a simple application for MC319Z RFID reader using Visual Studio 2008 and EMDK v2.9.

I refer the EMDK Programmer's Guide in order to work with RFID.

The following code is used, just three strings:

string hostname = "127.0.0.1";

RFIDReader rfid3 = new RFIDReader(hostname, 0, 0);

rfid3.Connect();

I know the RFIDReader class uses the LLRP service running on the device.

It's configured by default:

Hostname: 127.0.0.1

Port: 5084

Unfortunately I get an exception after the "Connect" method call:

     Exception occured: Symbol.RFID3.OperationFailureException: Connect

     at Symbol.RFID3.ProcessErrorCode.ThrowException(IntPtr readerHandle, String sMessage, RFIDResults results, Boolean      getLastError)

     at Symbol.RFID3.RFIDReader.Connect()

     Status: Unable to open connection to reader

The in-built demo app works stable.

It seems the LLRP service is busy.

I stopped and started RFID (the icon on the home screen indicates the "running" state), closed all the 3d party apps running in the background but I still can't access the reader.

How can I get rid of this problem?

Could you provide me some way to debug this issue, please?

Thank you.