Hello, I'm trying my first steps in SOAP and Java (also .NET). I've made a simple "Hello World"-app with .NET (should work as server :^) ). The client should run in TomCat 4.0.1. As I could read in the Apache-SOAP-docu the communication can be implemented as rpc-based or as message-based. I've no glue how to decide when using rpc-based and message-based SOAP! I couldn't finde a simple app which does message-based communication. Maybe you can help me? with best regards, Oliver