Презентація підготовлена та проводиться Романом Калитою (Львів)

1. There is time for REST WCF REST Services

2. Overview What is REST Rules and Guidelines Hosting a REST Service in .NET Consuming a REST Service with .NET Samples Discussion

4. Stateless

5. Cachable

7. HTTP Methods

8. HTTP Methods

9. HTTP Status Codes

10. HTTP Messages Request GET http://localhost:1128/api?$skip=2&$top=2 HTTP/1.1 User-Agent: Fiddler Host: localhost:1128 Accept: application/xml Response HTTP/1.1 200 OK Cache-Control: private Content-Length: 157 Content-Type: application/xml; charset=utf-8 Server: Microsoft-IIS/7.5 Date: Fri, 26 Aug 2011 18:51:22 GMT <?xml version="1.0" encoding="utf-8"?> <Data />

11. URIs RPC (SOAP) Interface http://example.com/CarsService/getYears http://example.com/CarsService/getMakes http://example.com/CarsService/getAutomobile http://example.com/CarsService/updateAutomobile http://example.com/CarsService/deleteAutomobile

12. URIs RESTful Interface No need to distinguish get/update/delete, that’s what the HTTP Method is for Collection http://example.com/2011/Honda/ Resource http://example.com/2011/Honda/Civic/2.0

13. Return Types XML XHTML ATOM Publishing Protocol RSS Custom (should contain hyperlinks) JSON Custom

14. WCF and REST WCF 4 REST REST endpoints Uri templates for routing WCF Hosting (Console, IIS, etc) etc.

15. WCF 4 REST, Web Api Programming model for HTTP in WCF Access HTTP from top to bottom REST endpoints Uri templates for routing WCF Hosting (Console, IIS, etc) etc. Http Client Plug in any format / media type Typeless JSON support IQueryablesupport

16. WCF REST contract [ServiceContract] publicinterfaceIAutomobileService { [OperationContract] [WebGet(UriTemplate = "*")] Message Get(); [OperationContract] [WebInvoke(Method = "PUT", UriTemplate = "*")] Message Put(Message data); }

17. Uri Templates [ServiceContract] public interface IAutomobileService { [OperationContract] [WebGet(UriTemplate = "/{year}/{make}/{model}/{engine}")] AutomobilesGetAutomobiles(string year, string make, string model, string engine); }

18. Routing staticvoidRegisterRoutes(RouteCollection routes) { routes.MapServiceRoute<SampleResource>("api"); } voidApplication_Start(objectsender,EventArgs e) { RegisterRoutes(RouteTable.Routes); }

19. Consuming REST .NET

20. WebRequest varhttpRequest = (HttpWebRequest)WebRequest.Create( "http://localhost/myservice"); using (varupStream = httpRequest.GetRequestStream()) { // some complicated logic to create the message } var response = httpRequest.GetResponse(); using (vardownStream = response.GetResponseStream()) { // some complicated logic to handle the response message. }

21. WebChannelFactory [ServiceContract] publicinterfaceITwitterService { [OperationContract] [WebInvoke(UriTemplate = "/friendships/create/{user}.xml")] TwitterUserCreateFriendship(string user); } using (var factory = newWebChannelFactory<ITwitterService>( newUri("http://www.twitter.com/"))) { factory.Credentials.UserName.UserName = username; factory.Credentials.UserName.Password = password; var proxy = factory.CreateChannel(); var user = proxy.CreateFriendship("userToFollow"); }

22. HttpClient var sample = newSample(); using (var client = newHttpClient()) { client.DefaultRequestHeaders.Accept.Add( newMediaTypeWithQualityHeaderValue("application/json")); client.Post( "http://localhost/myservice", newObjectContent(typeof(Sample), sample, Sample.JsonMediaType)); }

23. Tools Fiddlerhttp://www.fiddler2.com/fiddler2/ Firebughttp://getfirebug.com IEWatchhttp://www.iewatch.com/

24. Show me the code

25. Implementations OpenRastaOpenRasta brings the concept of REST to the .NET platform in ways that allow it to be deployed alongside ASP.NET and WCF components. http://trac.caffeine-it.com/openrasta/wiki/Doc http://code.google.com/p/implementing-rest/wiki/ByLanguage

26. Books