1. Web Service Programming with WCF 3.5 Eyal Vardi CEO E4D Solutions LTD Microsoft MVP Visual C# blog: www.eVardi.com

2. Agenda Web Services Future (Cloud Computing) Web Services Customizations with.NET 3.5 – JSON / POX vs. SOAP – GET vs. POST, PUT & DELETE – Cache – URI Template ADO.NET Data Services ( LINQ to URL )

3. About Consulting Mentoring Projects

4. Web Services Everywhere…

5. You know how it starts, But you don’t know how it ends !!! You know how it starts, But you don’t know how it ends !!!

6. Web Services Customizations

7. POST SimpleService.asmx/EchoString HTTP/1.1 Host: localhost:1489 User-Agent: Mozilla/5.0 Accept: text/html Content-Type: application/json; Content-Length: 27... XML, JSON, SOAP, AtomPub... HTTP Communication Headers Data VerbURL

8. POST SimpleService.asmx/EchoString HTTP/1.1 Host: localhost:1489 User-Agent: Mozilla/5.0 Accept: text/html,application/xhtml+xml Content-Type: application/json; Content-Length: 27... JSON vs. SOAP { "Age":37, "FirstName":"Eyal", "ID":"123", "LastName":"Vardi“ } Headers Data VerbURL

9. Before WCF ( ASMX )

10. DEMO Web Service ( ASMX ) Customization

11. ASMX HTTP Options OptionsASMX Data SOAP, XML, JSON, {arg}={value} SOAP, XML, JSON, {arg}={value} Verbs POST, GET POST, GET Headers Help Page Description WebMethod WebMethod Cache JS Proxy ScriptMethod ScriptMethod URI Template NO NO Config

12. WCF Solutions ( WebGet, WebInvoke )

13. DEMO Web Service ( WCF ) Customization

14. ASMX vs. WCF OptionsASMXWCF Data XML, JSON XML, JSON Verbs POST, GET POST, GET GET, POST, HEAD… GET, POST, HEAD… Headers Help Page NO NO Description WebMethod WebMethod NO NO Cache WebMethod WebMethod Headers Headers JS Proxy ScriptMethod ScriptMethod Yes / NO Yes / NO URI Template NO NO Yes Yes Config NO NO NO / Yes NO / Yes

15. DEMO WCF Dynamic Format ( XML or JSON )

16. Client Caching The request doesn’t get to the server, unless the data is expires. Browser GET E4D/Demos/Test.svc HTTP/1.1 Cache-Control : private | max-age=5 | no-cache Expires : Sun, 16 Nov 2008 11:58:18 GT11 GET E4D/Demos/Test.svc HTTP/1.1 Cache-Control : private | max-age=5 | no-cache Expires : Sun, 16 Nov 2008 11:58:18 GT11 HTTP Response

17. GET E4D/Demos/Test.svc HTTP/1.1 If-Modified-Since: 16/11/2008 23:58:13 Etag : d06606c5-7fab-46f0-a5cd-6f911e3e51eb GET E4D/Demos/Test.svc HTTP/1.1 If-Modified-Since: 16/11/2008 23:58:13 Etag : d06606c5-7fab-46f0-a5cd-6f911e3e51eb HTTP/1.1 304 Not Modified Cache-Control: no-cache Connection: Close HTTP/1.1 304 Not Modified Cache-Control: no-cache Connection: Close Server Caching Request 304 Status Browser HTTP Response GET E4D/Demos/Test.svc HTTP/1.1 Cache-Control : no-cache Expires : Sun, 16 Nov 2008 11:58:18 GT11 GET E4D/Demos/Test.svc HTTP/1.1 Cache-Control : no-cache Expires : Sun, 16 Nov 2008 11:58:18 GT11

18. DEMO Server Caching

19. ASP.NET Server Caching Request Response Browser SQL Dependency Duration Vary By Param

20. DEMO ASP.NET Server Caching

21. ADO.NET Data Services

22. LINQ to URL AtomPub Win App orBrowser Data Service IQuerable from x in Products where x.ID > 555 select x.Name

23. Services Platform System.NetSystem.Net WCFWCF Data Services Application / Service

24. DEMO Data Services Hello World

25. Summary Get the MAX from the HTTP 1.1 Caching SOAP vs. JSON ADO.NET Data Services

26. Additional Resources http://www.eVardi.com, My blog. http://www.eVardi.com WCF REST Starter Kit HTTP Protocol (RFC2616) WCF Web Programming Model Overview

27. Related Sessions DEV401: ASP.NET Ajax Internals Dan Amiga 09:00 – 10:30 DEV309: Building Web Sites with ASP.NET MVC Noam King 16:00 – 17:10 ARC301: “Velocity” Yair Siwek 16:00 – 17:10

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