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wcfwcf-data-servicesodataimpersonation

Is it possible to configure a custom DataService<T> to allow impersonation?

On a "standard" WCF service I'd simply mark up the operation methods with:

[OperationBehavior(Impersonation = ImpersonationOption.Allowed)]

But with my data service, I get an InvalidOperationException as soon as the DataServiceHost is opened:

The service operation 'ProcessRequestForMessage' that belongs to the contract with the 'IRequestHandler' name and the 'http://tempuri.org/' namespace does not allow impersonation.

How do I mark 'ProcessRequestForMessage' to allow impersonation?

Solution

  • Configure the behavior the following: 

    <behavior>
  <serviceCredentials useIdentityConfiguration="true" />
  <serviceAuthorization principalPermissionMode="Always" impersonateOnSerializingReply="true" />
</behavior>

    See also WCF Data Service with WIF 4.5; Principal not set for POST requests