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SOAP protocol vs rest, SOAP defines a header structure that defines the actions different SOAP nodes are expected to take on a message as well as the payload structure for transmitting information The concept of routing a message through a series of nodes that perform different functions is how SOAP supports things like addressing, security, independence Coordination, and headers define roles which then provide (SOA) features that are then directed by SOAP, and chaining messages through a series of steps is not uncommon in development environments.

SOAP protocol vs rest

What is SOAP protocol?

Simple Object Access Protocol (SOAP): A message protocol that allows distributed application objects to communicate, and it can be transmitted over a variety of lower-level protocols including the Web-related Hypertext Transfer Protocol (HTTP).

  • SOAP is an acronym for Simple-Object-Access-Protocol.
  • "HTTP" is an abbreviation for "Hyper-Text-Transfer-Protocol".

Advantages and disadvantages of SOAP

  • (SOAP) is an integral part of the Service-Oriented Architecture (SOA) and specification of web services associated with SOA.
  • Because it allows the sender to create a message path based on the logical services that must be applied to the message on the way to its destination, it makes way for secure and compliant communications, access control, reliable delivery, fault recovery, and support for dynamic service discovery. It's hard to imagine SOA without SOAP.
  • SOAP messages are defined at a high level in XML, but most SOAP applications use Web Services Definition Language (WSDL) which is written in XML.
  • The XML architecture of SOAP makes it useful for applications that expect their information to be provided in XML, and the fact that SOAP can ride over a variety of network protocols, including HTTP, means that it is easily passed through firewalls. Where other protocols may require a special place.
  • The SOAP data structure is based on XML, which in many ways is similar to the language (HTML) used to define web pages, and like (HTML) XLM is highly readable which makes it fairly easy to understand the SOAP message. , but also makes messages relatively large compared to the CORBA architecture and its Remote Procedure Call (RPC) protocol that will ingest binary data.
  • The biggest drawback of SOAP is that it is a heavyweight protocol for a heavyweight architecture, and the idea of ​​a message passing through a series of nodes that are processed by each seems to blend protocols and software service bus architectural models, neither of which is ideal for cloud-based development. Microservices are commonly used today.

Note: “XML” is an acronym for “extensible-markup-language” and “WSDL” is an acronym for “Web-Services-Description-Language.”

Note: “HTML” is an acronym for “hyper-text-markup-language” and “RPC” is an acronym for “Remote-Procedure-Call.”


SOAP is a protocol that is almost always used in the context of a Web Services / SOA framework, and as such the API is usually hidden by the SOA's top-level interface, and SOA APIs are available to all Almost modern programming languages, Microsoft offers a variety of NET SOAP / SOA tools.

SOAP is designed to divide traditional monolithic applications into a distributed, multi-component model without losing security and control, in contrast, REST is a model for the interaction of distributed computing based on HTTP, and the way web servers support clients (HTTP) is primarily used for development and communication of modern microservices, and RESTful APIs use HTTP requests to get, place, publish, and delete data.

REST/HTTP is simple, flexible, lightweight, and offers few means of exchanging information. SOAP can rely on HTTP as well, but it connects the elements of a complex set of distributed computing tools i.e. web services and framework (SOA) as well as Application components, and this forms part of a fully service-oriented framework.

SOAP was the first widely used protocol for delivering web services in a Service-Oriented Architecture (SOA), and almost all modern distributed application development is based on RESTful principles SOAP is often limited to legacy applications and projects and with time it declines to​ use it.

  • "API" is an acronym for "Application-Programming-Interface".

What are the characteristics of the SOAP protocol?

  • (SOAP) is a communication protocol designed to communicate over the Internet?
  • SOAP can extend (HTTP) to (XML) messages.
  • SOAP provides data transmission for web services.
  • SOAP can exchange full documents or RPC.
  • SOAP can be used to broadcast a message.
  • (SOAP) is platform and language independent.
  • SOAP is an XML method for defining what information is being sent and how it is being sent.
  • SOAP enables client applications to easily connect to remote services and invoke remote methods.
  • Although SOAP can be used in a variety of messaging systems and can be delivered over a variety of transport protocols, the primary focus of SOAP is remote procedure calls transmitted over HTTP.
  • Other frameworks including CORBA, DCOM, and Java RMI provide similar functionality to SOAP but SOAP messages are written entirely in XML and are thus uniquely platform and language independent.

SOAP Basics

Simple Object Access Protocol (SOAP) is a lightweight XML-based protocol used to exchange information in decentralized and distributed application environments. SOAP messages can be sent in any way that applications require as long as both the client and server use the same method. Only one transfer protocol (HTTP).

SOAP is well suited to the world of Internet applications and promises to improve the online interoperability of application services in the future. The SOAP method calls XML strings and delivers them to component instances through (HTTP).

SOAP XML documents are organized around root elements and child elements with values ​​and other specifications so that an XML document containing the request for which method is called and parameters is sent, and the server responds with a matching (XML) document containing the results.

SOAP is not based on Microsoft technology and is an open standard formulated by User-Land, Ariba, Commerce One, Compaq, Developer, HP, IBM, IONA, and Lotus. SOAP 1.1 was introduced to the W3C in 2000 as the official Internet standard, and Microsoft is one of the biggest advocates of SOAP and has incorporated SOAP as an interface standard into the .NET architecture.

The SOAP stack, which is a client-side implementation of SOAP, consists of libraries and classes that provide auxiliary functions. ) is intended to be independent of the platform and technology, but it is not.

However, web services written in .NET are always compatible with clients that use the same SOAP package or library, however when testing a .NET web service you need to confirm whether the service is compatible with other SOAP implementations, For example (Java SOAP stack) to avoid interoperability issues.