Solved

How do I call SetSessionStateBehavior(SessionStateBehavior.ReadOnly)  in ASP .Net MVC SignalR 2.x application?

Posted on 2014-03-14
1
1,363 Views
Last Modified: 2014-03-18
Hi:

I'm relatively new to the world of SignalR. I've got a couple of questions some of ya'll can possibly help me with.

My question sets are two fold. I've been looking at a chat example and there are a couple of things I'm trying understand.

This sample is built using SignalR 1.x libraries.
The code sample from the Global.asax.c file is as follows:
using System;
using System.Web;
using System.Web.Routing;
using System.Web.SessionState;
 
namespace MyApplication
{
    public class Global : System.Web.HttpApplication
    {
        private static RouteBase hubRoute;
 
        protected void Application_Start(object sender, EventArgs e)
        {
            hubRoute = RouteTable.Routes.MapHubs();
        }
 
        protected void Application_BeginRequest(object sender, EventArgs e)
        {
            if (IsSignalRRequest(Context))
            {
                // Turn readonly sessions on for SignalR
                Context.SetSessionStateBehavior(SessionStateBehavior.ReadOnly);
            }
        }
 
        private bool IsSignalRRequest(HttpContext context)
        {
            RouteData routeData = hubRoute.GetRouteData(new HttpContextWrapper(context));
 
            // If the routeData isn't null then it's a SignalR request
            return routeData != null;
        }
    }
}

Open in new window



Question 1) I'm not clear on the concept of SetSessionStateBehavior being set to ReadOnly. What is the effect of this and why would we do this in the SignalR instance?



Question 2) I've been currently tasked with moving our implementation from the SignalR 1.x to 2.x libraries. How would I replicate this functionality using the 2.x libraries?

Thanks,
JohnB
0
Comment
Question by:jxbma
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 27

Accepted Solution

by:
Sammy earned 500 total points
ID: 39930242
John,

1- Session state is not supported from within SignalR as it interferes with the processing of simultaneous requests from the same user. In 2.0 HTTPContext.Current.Session property is null because SignalR requests are handled before the session state module is initialized.

2- You don't need to duplicate this behavior anymore as its the default and only behavior for SignalR

for more troubleshooting SignalR issues, see this
http://www.asp.net/signalr/overview/signalr-20/troubleshooting-and-debugging/troubleshooting
0

Featured Post

Learn by Doing. Anytime. Anywhere.

Do you like to learn by doing?
Our labs and exercises give you the chance to do just that: Learn by performing actions on real environments.

Hands-on, scenario-based labs give you experience on real environments provided by us so you don't have to worry about breaking anything.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question