1. Adam Dille CS526 – Spring 2010

2.  Advances in Microsoft’s service offerings  ASMX vs. WCF  Latest WCF Improvements (.NET 4.0)  No in-depth study of backwards compatibility  No comparisons to Java, Ruby, PHP, etc

3.  ASMX  Introduced with.NET 1.0 in 2002  Service creation is quick and painless  Limited in scope  WCF  Introduced with.NET 3.0 in 2006  More steps involved to create and configure  Much more broad in scope and abilities

4.  Add ASMX file to Web Application  Decorate a function with [WebMethod] attribute  Viola! We have a web service! [WebMethod] public String SayHello(String name) { return “Hello “ + name; }

5.  Limited to HTTP protocol  Requires IIS, Cassini or hand-coded web server instance  Relies on web server for security

6.  Unifies development of web services, peer to peer, client/server and IPC  Endpoints expose different protocols  Combines and interoperates with:  ASP.NET Web Services (ASMX) .NET Remoting  Message Queuing  Enterprise Services (COM+)

7.  Variety of Security Options  Windows  Certificate  Digest  Basic  UserName  NTLM  IssuedToken  Allows varied security for same service through Endpoints

8.  Attributes  ServiceContract – Marks a class or interface as a WCF service  OperationContract – Marks a function as a member of the parent service contract  DataContract – Marks a class or struct as a data type that will be passed to or from the service  DataMember – A property of a data contract that will be passed along with it’s parent object  MessageContract – Allows explicit formatting of messages. Useful for interoperability.

9. [DataContract] public class HelloInfo { [DataMember] public String Name { get; set; } }

10. [ServiceContract] public interface IHelloService { [OperationContract] public String SayHello(HelloInfo info); } public class HelloService : IHelloService { public String SayHello(HelloInfo info) { return “Hello “ + info.Name; }

11.  Hosting Options  IIS 5 & 6 (HTTP protocol only)  IIS 7 .NET Forms or Console application  Windows Service

12.  Defining Endpoint through Configuration

13.  Defining Endpoint through Configuration public void DefineEndpointInConfig() { ServiceHost sh = new ServiceHost (typeof(HelloService)); sh.Open(); }

14.  Defining Endpoint Imperatively public void DefineEndpointImperatively() { ServiceHost sh = new ServiceHost(typeof(HelloService)); sh.AddServiceEndpoint( typeof(IHelloService), new WSHttpBinding(), "http://localhost/HelloService/EP1"); sh.Open(); }

15.  Released April 12, 2010  Simplified Configurations (Config-free!)  Service discovery  Routing services  REST Improvements  Workflow Services Integration

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