Web Service Programming with WCF 3.5 Eyal Vardi CEO E4D Solutions LTD Microsoft MVP Visual C# blog:

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 )

About Consulting Mentoring Projects

Web Services Everywhere…

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 !!!

Web Services Customizations

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

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: JSON vs. SOAP { "Age":37, "FirstName":"Eyal", "ID":"123", "LastName":"Vardi“ } Headers Data VerbURL

Before WCF ( ASMX )

DEMO Web Service ( ASMX ) Customization

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

WCF Solutions ( WebGet, WebInvoke )

DEMO Web Service ( WCF ) Customization

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

DEMO WCF Dynamic Format ( XML or JSON )

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 :58:18 GT11 GET E4D/Demos/Test.svc HTTP/1.1 Cache-Control : private | max-age=5 | no-cache Expires : Sun, 16 Nov :58:18 GT11 HTTP Response

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

DEMO Server Caching

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

DEMO ASP.NET Server Caching

ADO.NET Data Services

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

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

DEMO Data Services Hello World

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

Additional Resources My blog. WCF REST Starter Kit HTTP Protocol (RFC2616) WCF Web Programming Model Overview

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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