AJAX accessible long running service tasks blocking sub-sequent AJAX service requests in an ASP.NET Compatibility/Sessions enabled environment

Question

I\'m having a problem described and solved at the following link

http://blogs.msdn.com/b/silverlightws/archive/2009/09/30/having-a-pollingduplex-service-and-any-other-w

Answer 1

The answer is here...

In .NET 4, you can do this in Application_BeginRequest

if (Context.Request.Path.EndsWith("xxx.svc")) Context.SetSessionStateBehavior(SessionStateBehavior.ReadOnly);

-- How to force an IIS hosted WCF or ASMX [webservice] to use session object readonly?

By changing the SessionStateBehavior of the callback service, I was able to isolate this service to be run non-sequentially and stop the blockages.

Thanks Cine (https://stackoverflow.com/users/264022/cine)