Getting IP Address from Service of Spring DSL ?

Hello , I’m using Spring DSL ,
its very easy and good to use it.
it can make my method publish as DWR , WebService etc…

But I want to ask some of my problems.
I need to get ip address of the user of WebService

My DSL Service code is like this:
http://www.pastie.org/3343117

But i cant get user’s ip address from implementation code.
I want to block if user sending too much push method.

My 2nd question is , can i use hessian protocol ? if yes , i donno how to use it easiest way.Spring DSL is limited , for example it would be good if Spring DSL Service would support XMPP , raw socket calls like system.