Simple Object Access Protocol (SOAP)

It explains the basics of SOAP. This presentation covers the following topics:

+ Introduction
+ Design Goals
+ Architecture
+ SOAP Message Format
+ Messaging Models
+ Security & Issues
+ Advantages & Disadvantages
+ WSDL Overview
+ Conclusion

1. Simple Object Access Protocol (SOAP) Presented by Mehul Kumar

2. What we are going to Discuss? Introduction Design Goals Architecture SOAP Message Format Messaging Models Security & Issues Advantages & Disadvantages WSDL Overview Implementation Example

3. What is SOAP? Simple Object Access Protocol Messaging Protocol Protocol to Access Web Services Based on XML Developed by IBM, Microsoft, Lotus, and others

4. Example

5. Design Goals of SOAP Simplicity Extensibility Neutrality (Protocols) Independence (Programming Language)

6. In Brief SOAP is a way for a program running in one operating system to communicate with a program running in either the same or a different operating system, using HTTP (or any other transport protocol) and XML.

7. SOAP Architecture

8. SOAP Message Format Envelope - What is in the message & who should deal with it. Header (Optional) - Generic Container for Control Information. Can contain any number of elements. Body - Message Payload

9. Format - SOAP Envelope Code <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Header> <!-- optional --> <!-- header blocks go here... --> </soap:Header> <soap:Body> <!-- payload or Fault element goes here... --> </soap:Body> </soap:Envelope>

10. Format - SOAP Header Code <soap:Header> <!-- security credentials --> <s:credentials xmlns:s="urn:examples-org:security"> <username>dave</username> <password>evad</password> </s:credentials> </soap:Header>

11. Format - SOAP Body Code <soap:Body> <x:TransferFunds xmlns:x="urn:examples-org:banking"> <from>22-342439</from> <to>98-283843</to> <amount>100.00</amount> </x:TransferFunds> </soap:Body>

12. SOAP Messaging Models Request/Response One Way Multicast

13. SOAP Security & Issues D oes not define encryption for XML Web Services. L eft up to the implementer . Issues Encryption places dependency on transport protocol Cost of Encryption

14. SOAP Advantages Simplicity Portability Firewall Friendly Use of Open Standards Interoperatibility

15. SOAP Disadvantages Too much reliance on HTTP Statelessness Serialized by Value and not by Reference

16. What is WSDL? Web Service Description Language Pronounced as 'wiz-dull' Provides Metadata for SOAP Service Follow Specific Structure

17. WSDL Structure <definitions> <types> ........ </types> <!--Type of Data--> <message> <part></part> </message> <!--Data Elements--> <portType> ....... </portType> <!--Operations--> <binding> .... </binding> <!--Protocol & Data Format for a Port--> <service> .... </service> <!--URI & Details--> </definitions>

18. Implementation of SOAP Let's see an example using PHP

19. Conclusion Fallen-out of Favor due to new public APIs Commonly used for B2B Applications Independent of Programming Languages XML Based