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• A RESTful CardSpace: sending tokens using the new WCF AJAX Services in Orcas

  In short: this is the description of a sample that sends a CardSpace-obtained token to an AJAX service implemented with the new Orcas features. Few posts ago I published a tutorial about using CardSpace with Silver. While talking about it with Kushal Shah from the Workflow team, he suggested that it could be nice if we'd also demonstrate how to use CardSpace with the new RESTful capabilities of WCF: that sounded perfect for my "cardspace+<technology_of_choice>" series, hence I promply jumped on the task. The post below documents the results. Preamble Before diving into the code, let's take a moment for understanding what is this all about. The .NET framework 3.5, currently in beta , extends WCF with new capabilities explicitly designed to enable web development scenarios. There's really a lot to say on the subject, however for our context it is enough to say that you can now expose WCF services in ways that makes them extremely easy to consume from web pages. In practice, this mean that you can 1) invoke WCF services via HTTP verbs (POST and GET) and 2) handle messages in web-friendly formats, such as JSON. The macroscopic implication is that you don't need a proxy. Calling a WCF service becames a simple exercise in BLOCKED SCRIPT you gather the data from whatever UI element you need to, you create "by hand" a web request in AJAX style (with the object XMLHttpRequest or the activeXs Msxml2.XMLHTTP/Microsoft.XMLHTTP) and finally you use the results for updating selcted parts Read More... Posted Wednesday, May 30, 2007 9:08 PM from Vibro.NET | 0 Comments Filed under: Identity, Windows Cardspace, CardSpace, WCS, Architecture - WS, Infocard, Windows Communication Foundation, WCF, the Web, Orcas

• The solution for the Silver CardSpace sample & the OperationValidation handler

  In the last loooong post , the one about using CardSpace together with the new Receive activity featured by the Beta1 of the framework 3.5, I mentioned I would have attached the final solution: however I didn't do it right away, to give some incentive to actually go through the simple steps of the tutorial. Hehehe I know, I'm evil at times :-) I am now attaching the solution in this post: it is not commented nor documented, and it is very rough cut: it is exactly what I built while I was writing the tutorial. About the sample in itself. In order to keep everything as readable as possible I placed the logic for accessing the claims directly in the code activity; that would also happen in a real application, if the actions of your code activity are somewhat infuenced by the value of a claim. However if you'd be performing pure claim validation the right place to put your claim code would be the OperationValidation handler of the Receive activity (explore the properties of the Receive activity in Visual Studio and you'll find it). Thanks Matt for pointing it out Read More... Posted Monday, May 07, 2007 11:02 AM from Vibro.NET | 0 Comments Filed under: Identity, Windows Cardspace, CardSpace, WCS, Architecture - WS, Infocard, Orcas, Silver, WF, Windows Workflow Foundation

• A Silver CardSpace: securing Orcas Workflow Services with Windows CardSpace

  In short: this is a step by step tutorial for creating from scratch a Workflow Service with the Beta 1 release of Visual Studio codename "Orcas". The tutorial shows how to secure the service with Windows CardSpace, how to create a client application on the fly and how to access claims from the code of a Workflow activity. Just days before the Earth-moving news at Mix , with the Beta 1 release of Visual Studio codename "Orcas" we made available another silvery technology: the Workflow Services, Silver for friends, are an exciting new technology which allows developers to blend WCF and WF for creating service-aware workflows. As in good tradition, one of the first things I thought about was how to secure those new breed of services via CardSpace: turns out that is incredibly easy, and I could explain it in a 1/2 post if I'd start from an existing workflow service project. However Silver technology is still cutting edge: so I thought it could have been useful to make a full walkthrough. EDIT: after some hours spent writing this post, I've seen that the WF overlord already covered the workflow creation part and in better details: I recommend you checking Matt's post out, especially if some of the passages below are obscure to you. The plan We'll partition the work in few steps: 1. Create the workflow project 2. Add and configure the Receive activity 3. Host the workflow in a WorkflowServiceHost 4. Configure the workflow endpoint for using CardSpace 5. Create a client project on the Read More... Posted Wednesday, May 02, 2007 6:05 PM from Vibro.NET | 0 Comments Filed under: Identity, Windows Cardspace, CardSpace, WCS, Architecture - WS, Infocard, Windows Communication Foundation, WCF, Orcas, Silver, WF, Windows Workflow Foundation