XML-RPC is an extensible mechanism allowing a computer to offer a limited set
of services which can be accessed from anywhere in the net.

XML-RPC uses common and easy to learn internet standards like XML. and HTTP.

ulxmlrpcpp is a library to perform such calls in an object oriented approach
implemented in C++. It is intended to have simple interfaces and to be easy to
learn. But it shall still be fully compliant to the standards and safe in it's
use.

WWW: http://ulxmlrpcpp.sourceforge.net/