[Rxtx] I got a COM detected but treated as a LPRPort

[Alessandro Di Giovanni]

Hi everybody,
I'm new to rxtx. I'm using it to write to a Serial Port on windows.
The different COM Ports are correctly detected by this function:

--code--------------

public Vector getDetectedSerialPorts(){
        CommPortIdentifier portId;
        Enumeration en = CommPortIdentifier.getPortIdentifiers();
        Vector v = new Vector();

        while(en.hasMoreElements()){
            portId = (CommPortIdentifier) en.nextElement();
            if(portId.getPortType() == CommPortIdentifier.PORT_SERIAL){
                v.add(portId.getName());
            }
        }

        return v;

    }
--------------------

I tested the the application on my laptop (who has no physical Serial Ports)
just to check with a "Serial Port Sniffer" if the data were sent, and it
works: the function above finds a (virtual?) serial port and the sniffer
catches the bytes I write on that port.

Paradoxically my problem rises when I run the application on a machine with
real Serial ports:
"getDetectedSerialPorts()" works as before. It detects all of the serial
ports, but when I try to write on one of them, it looks like it's treated
like an LPRPort.
This is what I get when I try to write (e.g. on the detected COM1):

-------------------------
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException:
gnu.io.LPRPort
cannot be cast to gnu.io.SerialPort
-------------------------

If you have an idea about where I'm wrong, I'd be happy to know.

Thank you,
Alessandro
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