SOAP - A Protocol, Not a Technology


I have arranged this article in few key points & each point will help you in understanding what SOAP actually is.

  • SOAP is just a Communication or Messaging Protocol not a technology.

  • As I said, SOAP is a protocol, it means that SOAP defines a set of rules which we must follow while creating messages for communication. (Message - Understand this term in last point)

  • SOAP uses XML based formats for sending & receiving messages.

  • SOAP is platform independent because it is just a protocol not a technology.

  • SOAP is an XML based protocol or specifications for messaging between consumer and provider or client and host. i.e. Here client could be a .Net Application and host could be a WCF Service.

  • WCF uses SOAP protocol on the top of HTTP or TCP or any other protocol.

  • In SOAP world, Message or Messaging keywords are used quite often. A Message is nothing but just a piece of information. For example, An XML request to WCF service will be a called a Message, the response which we get from server will also be called a Message. And these messages follow SOAP protocol, hence they will be in XML and will be in a particular format as per SOAP guidelines.

You can find more detail about SOAP here.

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