session variables-null/lost - IIS after 20-30 secs when idle

I am working on a project where we use SQL server session and set and get variables from the table. When working with Visual studio it works normal but, on IIS remote server the session variables are lost immediately if we keep application idle for 20-30 seconds.

Here is the startup.cs code:

services.AddDataProtection().SetDefaultKeyLifetime(TimeSpan.FromDays(14));
//.PersistKeysToFileSystem(new DirectoryInfo("./Keys/"));
services.AddDistributedMemoryCache();
services.AddHttpContextAccessor();
services.ConfigureApplicationCookie(options => {
options.Cookie.Expiration = TimeSpan.FromMinutes(30);
options.ExpireTimeSpan = TimeSpan.FromDays(3);
});
services.AddSession(options =>
{
options.Cookie.Name = ".app.Session";
options.IdleTimeout = TimeSpan.FromMinutes(30);
options.Cookie.HttpOnly = true;
options.Cookie.IsEssential = true;
options.Cookie.SecurePolicy = CookieSecurePolicy.None;
});
services.AddStactive();

And web.config:

"1.0" encoding="UTF-8"?>
"aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified" />
"bin\IISSupport\VSIISExeLauncher.exe" arguments="-argFile IISExeLauncherArgs.txt" stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false">
"true" />
"true" />
"true" />

Do I need to add any extra configuration either in startup.cs or web.config to make sure session values are available until the SQL session is Timeout?

My current project is developed using ASP.NET core 2.1

Can someone help me with this situation on handling session variables on IIS servers?

Thanks!!

4 Replies

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Aakash N7y ago
Hi Jignesh,

Thanks for your response!!

I configured my IIS the same way link you have shared with me, But this(return null when getSession variables) still happens on the server. And when I use IDistributedCache, I'm able to set and get the cache values from SQL Server but HttpContect.SetSession and HttpContext.GetSession are not working.

Do you have any further suggestions for me to work on in order to keep the session variables live on IIS Servers?
0
Jignesh Kumar7y ago
Hi Akash,

Please find below link if you are using IIS 7 or higher

Check App pool advance setting.

https://stackoverflow.com/questions/3515947/losing-session-state
+1
Aakash N7y ago
Hi Bryian,

Yes I'm using app.UseSession() above app.UseMvc()
0
Bryian Tan7y ago
Do you have something like app.UseSession(); in the Configure method?
0