会话在超时前过期

Question

I have configured the cookieless session_state in ASP.Net Web API and timeout is 20 minutes.

<sessionState mode="InProc" timeout="20" />

On every new session established I am storing session_id generated in a dictionary to keep track of sessions, and respectively removes the session_id from dictionary whenever session_end.

But I am facing a strange issue (not very frequently), whenever a new user establishes the session it is expired immediately and the session_id is removed from the dictionary.

Session_End code:

protected void Session_End()
    {
        var sessionId = this.Session.SessionID;
        if (SessionDictionary.ContainsKey(sessionId))
        {
            SessionDictionary.Remove(sessionId);
        }
    }

So please if someone can guide me on this. Also, I have a doubt whether "this.Session.SessionID" refers to session_id which is expired or the one which is currently created.

Thanks in advance

Answer 1

Are you behind a load balancer? If so you could just be hitting a server in your farm that doesn't actually have the session setup as its specific to each server as you declared it as in process