Session handling across multiple users and browsers

Question

I have to implement session handling across multiple users, and multiple browsers. Each user has a unique token which I save in HttpContext.Current.Session variable inside the Session__Start() in Global.asax.cs method. It works perfectly fine for a single session. However, when I fire the request from two browsers, then while browsing through various pages, sometimes the method Session_Start() automatically gets called for the second session and it resets the session variable, resulting in a null value.

How should I handle this scenario?

Edit 1: What are the scenarios where the session may time out? Eg: switching between HTTPGet/HttpPost, or making Ajax calls?

I also read this link: Does Session timeout reset on every request

Is this something which I should be keeping in mind? My code has 2 GET and 1 POST request, and the session variable becomes NULL in the POST method for the second browser session.

Answer 1

I figured out the reason. The sessionState mode in web.config file was set to "InProc", whereas it should be set as "StateServer". When I made the necessary change, then it worked like a charm.

ASP.net state service should also be started from services.msc for this to work.