New protocol implementation

Question

Hello
I implemented my own Protocol class for sip, I used the following package name com.sun.midp.io.j2me.sip.
I made this Protocol class inherit the ConnectionBaseInterface.
I put this file with the rest of the jsr180 implementation classes in a jar named nist-siplite.jar.
I created a MIDlet to test my Protocol class and when I tried to open the connection with Connector.open("sip:..."),
I got the following exception :
Uncaught exception java/lang/NoClassDefFoundError: com/sun/midp/io/j2me/sip/Protocol: Cannot create class in system package .
My command to run the MIDlet is the following :
${wtk}/bin/emulator -classpath ${wtk}/lib/nist-siplite.jar;build/bin/ShootLite.jar -Dmicroedition.platform=j2me -Xdescriptor:build/bin/ShootLite.jad
where ${wtk} is my wtk_home.
I'm using the DefaultColorPhone to run my MIDlet.
javax.microedition.io.Connector.protocolpath=com.sun.midp.io
Now if I put the Protocol class in another package, by example, gov.nist.microedition.io.j2me.sip and change the
javax.microedition.io.Connector.protocolpath attribute in the system.config to gov.nist.microedition.io
I got he following exception :
[exec] java.lang.ClassNotFoundException: com/sun/midp/io/j2me/sip/Protocol
[exec] at javax.microedition.io.Connector.openPrim(+99)
[exec] at javax.microedition.io.Connector.open(+15)
[exec] at javax.microedition.io.Connector.open(+6)
[exec] at javax.microedition.io.Connector.open(+5)
[exec] at examples.jsr180.Shootme.<init>(+53)
[exec] at java.lang.Class.runCustomCode(+0)
[exec] at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
[exec] at com.sun.midp.midlet.Selector.run(+22)
[exec] java.lang.ClassNotFoundException: com/sun/midp/io/j2me/sip/Protocol
[exec] at javax.microedition.io.Connector.openPrim(+99)
[exec] at javax.microedition.io.Connector.open(+40)
[exec] at javax.microedition.io.Connector.open(+6)
[exec] at javax.microedition.io.Connector.open(+5)
[exec] at examples.jsr180.Shootme.<init>(+53)
[exec] at java.lang.Class.runCustomCode(+0)
[exec] at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
[exec] at com.sun.midp.midlet.Selector.run(+22)
[exec] javax.microedition.io.ConnectionNotFoundException: The requested pro
tocol does not exist sip://5060
[exec] at javax.microedition.io.Connector.open(+72)
[exec] at javax.microedition.io.Connector.open(+6)
[exec] at javax.microedition.io.Connector.open(+5)
[exec] at examples.jsr180.Shootme.<init>(+53)
[exec] at java.lang.Class.runCustomCode(+0)
[exec] at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
[exec] at com.sun.midp.midlet.Selector.run(+22)
I know for sure that the system.config's attributes are well read because I print them from the MIDlet application and they're right
But the wireless toolkit seems to continue to look for the class in the com.sun.midp.io.j2me.sip package.
So I'd like to know if you've already encountered this kind of problem or have any ideas about this....?
Thanks in advance for your reply.
Best regards.

Answer 1

Ok, it seems that the wireless toolkit doesn't allow one to load a class whose the package name is one of the system (i.e. com.sun.midp.io). The remaining question is how to force the wireless toolkit to correctly use
the protocol path defined in the system.config file...(i.e. javax.microedition.io.Connector.protocolpath=gov.nist.micoredition.io).
I'm wondering if the wireless toolkit doesn't take this protocolpath because the others protocol doesn't exist anymore.
Hope that someone can answer this question.
Best regards