. XML-RPC HOWTO . Prev . Next . To demonstrate XML-RPC, we implement the following API in as many languages as possible. struct sample.sumAndDifference ( int x , int y ) . This function takes two integers as arguments, and returns an XML-RPC <struct> containg two elements: . sum . The sum of the two integers. difference . The difference between the two integers. It's not very useful, but it makes a nice example. :-) . Prev . Home . Next . XML-RPC vs. SOAP . Using XML-RPC with Perl