iis - ASP.NET application to serve multiple requests from a single process

Question

I am currently debugging some issue about this.

We have a ASP.NET web application and I am debugging on Cassini. When I tried to use IE and send out the request to the server, some time (e.g. in about 20minutes) is needed to process and then send out the response.

In case of multi-tab IE, I tried to send out the requests in different tab at about the same time to the same server but the response is handled only after the one of the response is sent out.

If a new instance of IE is started and the requests are sent out in these different instances, the server can process and send out the response almost simultaneously. After doing some research I found that IIS express may solve my problem, but I cannot. Anyone has experienced similar problem or have I missed out some really important things to check with first?

Thank you for your help.

Answer 1

This is primarily due to ASP.net's session state variable and the fact that only one request at a time may have R/W access to a particular session (as determined by the SessionID cookie).

Any additional requests requiring any form of session access (since Read/Write is the default) will be blocked until the previous request has been completed.

Based on the following links:

• http://johnculviner.com/asp-net-concurrent-ajax-requests-and-session-state-blocking/
• https://msdn.microsoft.com/en-us/library/ms178581.aspx?f=255&MSPPError=-2147217396