Features of Windows Communication Foundation v4.5 part 1:

ñ  Multiple Authentication Support

ñ  Contract First Development

ñ  Simplified Generated Configuration

ñ  Validating WCF Configuration

ñ  Single WSDL file

ñ  Tooltip and Intellisense Support

ñ  ASP.NET Compatibility Mode default change

ñ  BasicHttpsBinding

ñ  Task-based Programming Model

ñ  ChannelFactory Caching

Multiple Authentication Support:

      WCF 4.0 allows to multiple authentication on a single endpoint and we can sustain further inherited their authentication directly from IIS or self-hosting.

1)    IIS Hosting :

For IIS host services set the property of authentication schemas as per the requirements. Then in your service’s  in web.config file set the ‘clientCredentialType’  as “InheritedFromHost”.

In Web.Config:

<bindings>

<basicHttpBinding>

<binding name="secureBinding">

<security mode="Transport">

<transport clientCredentialType="InheritedFromHost" />

</security>

</binding>

</basicHttpBinding>

</bindings>

You can specify that only subset of authentication schemas to be used with your service using ServiceAuthenticationBehaviour or the <serviceAuthenticationManager> element.

Code Snippet:

ServiceAuthenticationBehavior sab = null;

sab = serviceHost.Description.Behaviors.Find<ServiceAuthenticationBehavior>();

if (sab == null)

{

sab = new ServiceAuthenticationBehavior();

sab.AuthenticationSchemes = AuthenticationSchemes.Basic | AuthenticationSchemes.Negotiate | AuthenticationSchemes.Digest;

serviceHost.Description.Behaviors.Add(sab);

}

else

{

sab.AuthenticationSchemes = AuthenticationSchemes.Basic | AuthenticationSchemes.Negotiate | AuthenticationSchemes.Digest;

}

                                 When configuration this in a config file , use the  <serviceAurhtenticationManager>

Shown in the following.

<behaviors>

<serviceBehaviors>

<behavior name="limitedAuthBehavior">

<serviceAuthenticationManager authenticationSchemes="Negotiate, Digest, Basic"/>

<!-- ... -->

</behavior>

</serviceBehaviors>

</behaviors>