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POApplication_OnAuthenticateRequest executes for image requests
 

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    <p>I'm using Application_OnAuthenticateRequest in Global.asax to assign a custom principal to HttpContext.Current.User and System.Threading.Thread.CurrentPrincipal.<br> In testing, I noticed that this code executes multiple times for a single page request. By looking at the HttpContext.Current.Request.Url I determined that this code is executing for each call to a JavaScript file, Image, and CSS file. All of these resources are stored in a single subfolder called "Content". So, I'm able to prevent multiple executions of my custom principal by checking to see if "Content" is part of HttpContext.Current.Request.Url like so:</p> <pre><code>protected void Application_OnAuthenticateRequest(Object sender, EventArgs e) { if (HttpContext.Current.Request.Url.AbsoluteUri.Contains("/Content")) return; if (Context.User != null) { if (Context.User.Identity.IsAuthenticated) { var userRepository = ObjectFactory.GetInstance&lt;IUserRepository&gt;(); var prospectorUser = userRepository.GetByUserName(Context.User.Identity.Name); if (prospectorUser == null) { throw new ApplicationException("Context.User.Identity.Name is not a recognised user."); } var principal = new ExtendedWindowsPrincipal(HttpContext.Current.User.Identity, prospectorUser); // Attach the new principal object to the current HttpContext object HttpContext.Current.User = principal; // Make sure the Principal's are in sync System.Threading.Thread.CurrentPrincipal = HttpContext.Current.User; return; } } } </code></pre> <p>My fix seems kludgy. Is there a better way to trap requests for "Content" items and prevent my custom code for my principal from firing for every request?</p>
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