Transport methods in SOAP, XML role in SOAP

Transport methods in SOAP, XML role in SOAP

Transport methods in SOAP:

SOAP relies HTTP (Hypertext Transfer Protocol) and SMTP (Simple Mail Transfer Protocol), TCP.  HTTP and SMTP used for message negotiation, transmission.

XML role in SOAP:

Simple Object Access Protocol relies on XML (Extensible Markup Language). XML is used for SMPL message format. Envelope, Header, Body and Fault these are XML based protocol parts.

The envelope element is a root element for SOAP message. You can easily identify the SOAP message by the name of the root element. Envelope element contains header element and then body element. Message payload is represented by body element. You can identify from body element where the data goes. Fault element contains fault code and fault string. Fault string provides error explanation.

Role of HTTPs in SOAP:

HTTP (Hypertext Transfer Protocol) is used for distributed, collaborative, hypermedia information systems.

HTTP is an application protocol to transfer hypertext.