RPC Lite ?
Recently wished to find easy variant of RPC framework (library, sdk, or other)...
My criteria of search the following:

• Lite (don't use any application servers).
  
• Support a remote interface references.
• Don't need cardinally reflow a ready to use local interfaces.
• Support for Java and C#.
  

I have tried some found frameworks, but not one of them has not approached... :(