Programming Web Services with XML-RPC
by Simon St. Laurent, Dave Winer, Joe Johnston, Edd Wilder-James
Chapter 1. Introduction
Have you ever wanted to publish information on the Web so programs beyond browsers could work with it? Have you ever needed to make two or more computers running different operating systems and programs written in different languages share processing? Have you ever wanted to build distributed applications using tools that let you watch the information moving between computers rather than relying on “package and pray?”
Web services are a set of tools that let you build distributed applications on top of existing web infrastructures. These applications use the Web as a kind of “transport layer” but don’t offer a direct human interface via the browser. Reusing web infrastructures can drastically lower the cost of setting up these applications and allows you to reuse all kinds of tools originally built for the Web.
XML-RPC is among the simplest (and most foolproof) web service approaches, and makes it easy for computers to call procedures on other computers. XML-RPC reuses infrastructure that was originally created for communications between humans to support communications between programs on computers. Extensible Markup Language (XML) provides a vocabulary for describing Remote Procedure Calls (RPC), which are then transmitted between computers using the HyperText Transfer Protocol (HTTP).
XML-RPC can simplify development tremendously and make it far easier for different types of computers to communicate. By focusing on computer-to-computer communications, XML-RPC ...
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