java server to server communication framework (json)

I am building an ESB (enterprise Service Bus). This means i need to set up tcp connections and communicate with JSON (well not NEED.. but json is light and easy) I made a server who is able to set up a TCP socket and receive json. This is all very nice but i need to be able to call methods via a tcp connection.

so for example to call a method:

{server:pictures, method:changeImage('name')}

This is just an example and could change.

my question is: Is there a framework that is able to:

1. set up tcp server
2. receive json messages and call the appropriate method
3. return an answer (in json).

of course json could also be xml but i would rather use json (much cleaner)

thanxs in advance!

A Web Server serving RESTful web services is exactly what you're asking about..

If I were you, I would look into using SOAP based messaging and the WS-* Standards. Things like WS-Federation and WS-AtomicTransactions will allow you to build a more robust ESB.

Any modern Servlet container, perhaps? Running DWR or jabsorb? Have you looked at the modern ESB implementations? Sounds like you have a lot of wheel I've seen before here.

Why do you need to create your own ESB? As I understand it's a quite complex task. Have you considered using existing open-source solutions?