Hi all,
Finally found the solution: Java is too smart!!!
I was running the service and the proxy on the same machine (=same hostname),for proof of concept, so it just bypassed the proxy and went straight to the web service. So the command line parameters "-Dhttp.proxySet=true -Dhttp.proxyHost=hostname -Dhttp.proxyPort=portnum" do work once I moved my proxy on to another machine
Regards,
Luc