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Programming, Technology »

Tuesday, November 12, 2013 | 0 Comments

In my current job we where in the need for a load-test script which performs Service Provider (SP) initiated Web Browser Single Sign-On’s (SSO’s) based on SAML 2.0 (Security Assertion Markup Language). A mouthful, but it sounds harder than it actually is. We need this to determine how much load our Identity Provider (IdP) can handle, but we are also planning to use it as an instrument to test if our identity provider can meet our performance requirements. Now off course you could also load-test the login process without the use of SAML. In this scenario you go directly to the login URL of the identity provider which doesn’t involve exchanging SAML messages between the service provider and the identity provider. While this i... [More]

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Programming, Technology »

Wednesday, June 26, 2013 | 0 Comments

When you are importing shared configuration from another IIS webserver you have to be sure that the importing IIS webserver contains the same role services. If not you could end up with application pools being shut down and HTTP 503 errors. In my case it was because I didn’t install the role service IP and Domain Restrictions resulting in the following error which can be seen in the event viewer (eventvwr): The Module DLL C:\Windows\System32\inetsrv\iprestr.dll failed to load. The data is the error. After installing the role the problem was gone. [More]

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Programming, Technology »

Monday, February 13, 2012 | 0 Comments

This week I will be going to the GeekNight which is BTW. free of charge and second day of the Dutch Techdays 2012 which will be held in the World Forum, The Hague. Besides the sessions I am going to visit, I also will be available at my employers (Ordina) stand #3. Come and take a look so we could do some nerd talk. My agenda for the sessions will be the following: GeekNight Agenda 19:15 – 19:55 75 Visual Studio Tips and Tricks in 40 Minutes 20:05 – 20:45 Having fun with HTML5 20:55 – 21:35 Sketching and Paper Prototyping Techniques Techdays Agenda 09:15 – 10:30 The Future of C# and Visual Basic 10:50 – 12:05 What could SQL Server users learn from NoSQL 13:15 – 14:30 C#5, ASP.NET MVC 4, and asynchr... [More]

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Programming, Technology »

Friday, February 10, 2012 | 0 Comments

This week I’ve been busy debugging a memory dump of a Windows service with WinDBG. For people who have never heard of it, this is one of the most powerful debuggers out there. It’s far more powerful then the Visual Studio debugger because it let’s you do low level stuff. WinDBG is part of the Debugging Tools for Windows. By default it’s designed for debugging unmanaged code but with the use of some extensions (SOS, Pscor2), you can debug managed code as well. There are a lots of tutorials on the web which help you get started. Now back to subject. During my debugging of the memory dump, I searched for possible occurred exceptions which must be located on the heap. So to check all types with the name Exception in it, y... [More]