与Web服务共享Web应用程序会话

Question

Environment:

We are having a Website and a separate ASMX - Web Service sharing the same database (MS SQL 2008). Web Service is serving the Mobile Apps at the moment. Projects are done using c#, Asp.Net, 3.5 framework, VS 2008.

Requirement:

We need to avoid same user login into Website and Mobile App (Using the Web Service) at the same time. Basically user can log in only to a one service at a time (either web or app). Also, user should be able to log in to Mobile App as soon as web browser is closed or logged out.

If user tries to log in while already logged into the other service, code should have a way to find it for notification and restriction purposes.

I think AppFabrc address the requirement but needs Windows Server 2008 R2 which we don't have at the moment.

Hope you have better ideas??

Please note this is not the same question as this .

Answer 1

FYI... you don't get any notification when the browser closes. You could go based on the last activity time (basically keep track of user activity - page clicks, etc). I also don't see how appFabric is going to help. You still have the same problem.

Answer 2

As others have mentioned, there is no easy way to know when somebody has closed the browser. You could use javascript to detect when somebody leaves your web app but there are some issues (see the following question and answers for more information: How to capture the browser window close event? )

If you're open to other workflows, you could try this:

• When the user logins to the mobile app, have the mobile app log him out from the web site.
• When the user logins to the web site, have the web site log him out from the mobile app.

That way your users would login and start working right away instead of them having to log in, see an error, logout from the other app, log in again.