HELP ! MIDP + WTK + Netbeans + SIP API

Question

Ok,
I'm a total newb, so sorry if I offend anyone. I've been tasked with building a quick and dirty SIP client for a small hand held device. Nothing fancy, just the basics.
So, I've gone and installed the SIP API (JSR-180), netbeans 4.1 with mobility kit, and the WTK2.2.
I've build a very simple MIDP, which is almost verbatim from "Getting Started with SIP API for J2ME". Of course I added the things I needed that that was about it.
I've made sure that I've included the sipa1_0_1.jar into the "Libraries and Resources" in Netbeans.
Everthing builds fine as I would expect, but when I attempt to run the application :
1. The emulator launches and show the Midlet to be executed.
2. Once I execute the Midlet, I get a "Java.Lang.NullPointerException"
The code I have included is :
public MTPComponent() {
String myaddress = "sip:user@host";
SipConnectionNotifier scn = null;
System.out.println("*******************Starting******************");
try{
scn = (SipConnectionNotifier) Connector.open("sip:");
if (scn != null){
myaddress = new String("sip:user@"+scn.getLocalAddress()+":"+scn.getLocalPort());
System.out.println(myaddress);
} catch(Exception ex){
System.out.println("caught error here");
ex.printStackTrace();
Netbeans reports the following output :
java.lang.ClassNotFoundException: com/sun/midp/io/j2me/sip/Protocol
at javax.microedition.io.Connector.openPrim(+211)
at javax.microedition.io.Connector.open(+15)
at javax.microedition.io.Connector.open(+6)
at javax.microedition.io.Connector.open(+5)
at MTPDemo.MTPComponent.<init>(+36)
at java.lang.Class.runCustomCode(+0)
at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
at com.sun.midp.midlet.Selector.run(+22)
java.lang.ClassNotFoundException: com/sun/midp/io/j2me/sip/Protocol
at javax.microedition.io.Connector.openPrim(+211)
at javax.microedition.io.Connector.open(+40)
at javax.microedition.io.Connector.open(+6)
at javax.microedition.io.Connector.open(+5)
at MTPDemo.MTPComponent.<init>(+36)
at java.lang.Class.runCustomCode(+0)
at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
at com.sun.midp.midlet.Selector.run(+22)
caught error here
javax.microedition.io.ConnectionNotFoundException: The requested protocol does not exist sip:
at javax.microedition.io.Connector.open(+72)
at javax.microedition.io.Connector.open(+6)
at javax.microedition.io.Connector.open(+5)
at MTPDemo.MTPComponent.<init>(+36)
at java.lang.Class.runCustomCode(+0)
at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
at com.sun.midp.midlet.Selector.run(+22)
Unable to create MIDlet MTPDemo.MTPComponent
java.lang.NullPointerException
at MTPDemo.MTPComponent.<init>(+174)
at java.lang.Class.runCustomCode(+0)
at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
at com.sun.midp.midlet.Selector.run(+22)
Execution completed.
The problem seems to be that scn does not get properly established. I can't figure out why. I have read what I can on this, but nothing seems to help. I have set Obsification to it's maximum setting, still no help.
I am completely lost and am not sure what to make of this. Can anyone shed some light ?

Answer 1

I doubt at this...
"javax.microedition.io.ConnectionNotFoundException: The requested protocol does not exist sip:"
SIP protocol is not supported by the WTK2.2 environment.
Check the environment.