Skip to main content

Detecting Session Timeouts

Durata de viata a unei sesiune se poate seta din fisierul de configurare. Valoarea minima pe care o poate avea este 1 minut:
<sessionState mode="InProc"  timeout="1" />
Cand setati durata de viata la sesiune trebuie sa avegi grija ca IIS, by default face recyle la AppPool odata la 120 de minute. Ambele valori trebuie modificate daca doriti ca durata de viata a sesiunii sa fie mai mare.
Dintr-o aplicatie ASP.NET, folosid metoda Session_End din Global.asax nu o sa puteti prinde mereu acest eveniment. Pentru mai multe detalii:
Pentru a putea detecta daca o sesiune este noua putem sa verificam valoarea propietatii Session.IsNewSession.Aceasta propietate este TRUE cand sesiune este noua.
Folosit aceasta propietate pe ASP.NET MVC3 ne putem declara un action filter prin intermediul caruia sa detectam daca sesiunea a expirat.
public class Sessi1onExpireFilterAttribute : ActionFilterAttribute 
         public override void OnActionExecuting( ActionExecutingContext filterContext ) 
                 HttpContext context = HttpContext.Current;
                  if ( context.Session != null ) {
                      if ( context.Session.IsNewSession ) {
                          string cookies= ctx.Request.Headers[ "Cookie" ];
                         if ( ( cookies != null
              && ( cookies.IndexOf ( "ASP.NET_SessionId" ) >= 0 ) ) {
                              context.Response.Redirect ( "~/Default/Index" );
              base.OnActionExecuting ( filterContext );
Nu este de ajuns sa verificam valoarea propietatii IsNewSession. Trebuie sa ne dam seama daca sesiune a expirat sau este primul access a utilizatorului la noi pe site. Acest lucru este destul de usor de facut daca verificam avem deja ceva in cookies. Putem sa punem noi in cookies o anumita valoare sau sa verificam daca in cookies exista “ASP.NET_SessionId”.


Popular posts from this blog

ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded

Today blog post will be started with the following error when running DB tests on the CI machine:
threw exception: System.InvalidOperationException: The Entity Framework provider type 'System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer' registered in the application config file for the ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See for more information. at System.Data.Entity.Infrastructure.DependencyResolution.ProviderServicesFactory.GetInstance(String providerTypeName, String providerInvariantName) This error happened only on the Continuous Integration machine. On the devs machines, everything has fine. The classic problem – on my machine it’s working. The CI has the following configuration:

TeamCity.NET 4.51EF 6.0.2VS2013
It seems that there …

How to check in AngularJS if a service was register or not

There are cases when you need to check in a service or a controller was register in AngularJS.
For example a valid use case is when you have the same implementation running on multiple application. In this case, you may want to intercept the HTTP provider and add a custom step there. This step don’t needs to run on all the application, only in the one where the service exist and register.
A solution for this case would be to have a flag in the configuration that specify this. In the core you would have an IF that would check the value of this flag.
Another solution is to check if a specific service was register in AngularJS or not. If the service was register that you would execute your own logic.
To check if a service was register or not in AngularJS container you need to call the ‘has’ method of ‘inhector’. It will return TRUE if the service was register.
if ($injector.has('httpInterceptorService')) { $httpProvider.interceptors.push('httpInterceptorService&#…

Fundamental Books of a Software Engineer (version 2018)

More then six years ago I wrote a blog post about fundamental books that any software engineer (developer) should read. Now it is an excellent time to update this list with new entries.

There are 5 different categories of books, that represent the recommended path. For example, you start with Coding books, after that, you read books about Programming, Design and so on.
There are some books about C++ that I recommend not because you shall know C++, only because the concepts that you can learn from it.


Writing solid codeCode completeProgramming Pearls, more programming pearls(recommended)[NEW] Introduction to Algorithms


Refactoring (M. Fowler)Pragmatic ProgrammerClean code[NEW] Software Engineering: A Practitioner's Approach[NEW] The Mythical Man-Month[NEW] The Art of Computer Programming


Applying UML and Patterns (GRASP patterns)C++ coding standards (Sutter, Alexandrescu)The C++ programming language (Stroustrup, Part IV)Object-oriented programming (Peter Coad)P…