SOAP-over-UDP

Hi, I'm desperate!
I'm trying to find out how to send a broadcast SOAP request to a UDDI
registry in a LAN, but I'm not able to do this. I've looked for some
example but I've not found anithing.

Please...could anybody help me?
I'm making a thesis for the University of Florence (Italy) and I have
to discovery dinamically web service published in some UDDI registry
somewhere in a LAN. I have to send a broadcast SOAP request to these
UDDI registry (as I wrote few lines above).
Of course I'm using Java language.

Thank you very much for your help...I'm in a great hurry...thanks very
very much to everyone could help me!

Best reguards,

Francesco