SOAP Wikipedia. This article is about the computer network protocol. For surfactants used for cleaning, see Soap. For other uses, see Soap disambiguation. SOAP originally Simple Object Access Protocol is a protocol specification for exchanging structured information in the implementation of web services in computer networks. Its purpose is to induce extensibility, neutrality and independence. It uses XML Information Set for its message format, and relies on application layer protocols, most often Hypertext Transfer Protocol HTTP or Simple Mail Transfer Protocol SMTP, for message negotiation and transmission. SOAP allows processes running on disparate operating systems such as Windows and Linux to communicate using Extensible Markup Language XML. Since Web protocols like HTTP are installed and running on all operating systems, SOAP allows clients to invoke web services and receive responses independent of language and platforms. CharacteristicseditSOAP provides the Messaging Protocol layer of a web services protocol stack for web services. It is an XML based protocol consisting of three parts an envelope, which defines the message structure1 and how to process ita set of encoding rules for expressing instances of application defined datatypesa convention for representing procedure calls and responses. SOAP has three major characteristics extensibility security and WS Addressing are among the extensions under developmentneutrality SOAP can operate over any protocol such as HTTP, SMTP, TCP, UDP, or JMSindependence SOAP allows for any programming modelAs an example of what SOAP procedures can do, an application can send a SOAP request to a server that has web services enabledsuch as a real estate price databasewith the parameters for a search. The server then returns a SOAP response an XML formatted document with the resulting data, e. Since the generated data comes in a standardized machine parsable format, the requesting application can then integrate it directly. The SOAP architecture consists of several layers of specifications for message format.
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