I am trying to implement passive federation with ACS and Outh and this sample comes tantalisingly close to demonstrating how to do this. What I would like to accomplish is as follows...1. Client tries to access protected resource2. Client is routed to ACS to choose a passive identity provider (IP)3. Client picks proprietary IP-STS or Google etc..4. Client authenticates with IP5. IP redirects to ACS where claims are transformed.6. ACS relying party (configured for SWT) returns an OAuth access token to the client and re-directs to the protected resource.Saving the token to the session state is ideal for transferring the token to Silverlight via a WCF proxy. I have adapted the existing sample to do exactly this. However what I can't quite figure out is how to inject ACS as the ultimate OAuth authorization token provider between the client and the protected resource? Specifically can Microsoft.IdentityModel.Protocols.OAuth.Client.OAuthClientSettings be configured to allow this?
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