I’ve packaged a basic XML-RPC library for Processing. XML-RPC is a widely adopted Remote Procedure Calling protocol that works over the Internet. It creates connections between procedures that are running in different applications, or on different machines. This is something I have been using for a while, I thought it may also be helpful for the Processing community and contributed to the growing number of libraries.
All documentation and examples are over there for your perusal. Let me know if you see any bugs or have comments.