![]() ![]() RPC is a much older technology than the Web. As its name indicates, it is a mechanism to call a procedure or a function available on a remote computer. In this tutorial, you will learn what is XML-RPC and why and how to use it. XML-RPC is the simplest XML-based protocol for exchanging information between computers across a network. and can also be complex record and list structures.ĭownload the complete XML-RPC tutorial (PDF) Procedure parameters can be scalars, numbers, strings, dates, etc. A procedure executes on the server and the value it returns is also formatted in XML. XML-RPC is a Remote Procedure Calling protocol that works over the Internet.Īn XML-RPC message is an HTTP-POST request. XML-RPC is designed to be as simple as possible, while allowing complex data structures to be transmitted, processed and returned. It’s remote procedure calling using HTTP as the transport and XML as the encoding. It’s a spec and a set of implementations that allow software running on disparate operating systems, running in different environments to make procedure calls over the Internet. ![]() “Does distributed computing have to be any harder than this? I don’t think so.” - Byte. Simple cross-platform distributed computing, based on the standards of the Internet. does not require (nor support) the creation of WSDL service descriptions, although XRDL provides a simple subset of the functionality provided by WSDL.allows only one way to serialize methods, whereas SOAP defines multiple different encodings.XML-RPC can be argued as simpler than SOAP because it In comparison to REST, where resource representations (documents) are transferred, XML-RPC is designed to call methods. Basic access authentication is used for identification, HTTPS is used when identification (via certificates) and encrypted messages are needed. Identification of clients for authorization purposes can be achieved using popular HTTP security methods. Therefore, XML-RPC can be used to transport objects or structures both as input and as output parameters. The parameter types allow nesting of parameters into maps and lists, thus larger structures can be transported. Multiple input parameters can be passed to the remote method, one return value is returned. The client in that case is typically software wanting to call a single method of a remote system. XML-RPC works by sending an HTTP request to a server implementing the protocol. The patent is assigned to webMethods, located in Fairfax, VA. The generic use of XML for remote procedure call (RPC) was patented by Phillip Merrick, Stewart Allen, and Joseph Lapp in April 2006, claiming benefit to a provisional application filed in March 1998. Prior art wrapping COM, CORBA, and Java RMI objects in XML syntax and transporting them via HTTP also existed in DataChannel’s WebBroker technology. XML-RPC’s idea of a human-readable-and-writable, script-parsable standard for HTTP-based requests and responses has also been implemented in competing specifications such as Allaire’s Web Distributed Data Exchange (WDDX) and webMethod’s Web Interface Definition Language (WIDL). UserLand supported XML-RPC from version 5.1 of its Frontier web content management system, released in June 1998. As new functionality was introduced, the standard evolved into what is now SOAP. The XML-RPC protocol was created in 1998 by Dave Winer of UserLand Software and Microsoft, with Microsoft seeing the protocol as an essential part of scaling up its efforts in business-to-business e-commerce. This article is about the protocol named “XML-RPC”. ![]() “XML-RPC” also refers generically to the use of XML for remote procedure call, independently of the specific protocol. XML-RPC is a remote procedure call (RPC) protocol which uses XML to encode its calls and HTTP as a transport mechanism. (2002) Web Services Essentials – Distributed Applications with XML-RPC, SOAP, UDDI and WSDL O’Reilly – Web Services Essentials – Chapter 2 – XML-RPC Essentialsįrom: Cerami, E. PowerPoint – CIS017-6 – XML-RPC Introduction – April 2016 CIS017-6 – Distributed and Parallel Architectures ![]()
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