INTRODUCTION
* SOAP stands for Simple Object Access Protocol * SOAP is a communication protocol * SOAP is for communication between applications * SOAP is a format for sending messages * SOAP communicates via Internet * SOAP is platform independent * SOAP is language independent * SOAP is based on XML * SOAP is simple and extensible * SOAP allows you to get around firewalls * SOAP is a W3C recommendation
SOAP, originally defined as Simple Object Access Protocol, is a protocol specification for exchanging structured information in the implementation of Web Services in computer networks. It relies on Extensible Markup Language (XML) for its message format, and usually relies on other Application Layer protocols, most notably Hypertext Transfer Protocol (HTTP) and Simple Mail Transfer Protocol (SMTP), for message negotiation and transmission. SOAP can form the foundation layer of a web services protocol stack, providing a basic messaging framework upon which web services can be built. This XML based protocol consists of three parts: an envelope, which defines what is in the message and how to process it, a set of encoding rules for expressing instances of application-defined datatypes, and a convention for representing procedure calls and responses. SOAP has three major characteristics: Extensibility (security and WS-routing are among the extensions under development), Neutrality (SOAP can be used over any transport protocol such as HTTP, SMTP or even TCP), and Independence (SOAP allows for any programming model).[1]
As an example of how SOAP procedures can be used, a SOAP message could be sent to a web-service-enabled web site such as a real-estate price database, with the parameters needed for a search. The site would then return an XML-formatted document with the resulting data, e.g., prices, location, features. With the data being returned in a standardized machine-parseable format, it can then be integrated
References: * 9 External links | SOAP once stood for 'Simple Object Access Protocol ' but this acronym was dropped with Version 1.2 of the standard.[2] Version 1.2 became a W3C recommendation on June 24, 2003