The problem is this. I have a CGI which can take a few minutes to process a request. It is important that this request not be processed twice. To that end I have set up tables and status codes for the request so that no matter how many times the User pounds on the submit button the request will only be processed once.

My problem is this: The solution requires a process to poll the interim table until the request has been completed. If the User hits the "Submit" button multiple times then multiple processes will be spawned that will start polling the table.

I want to avoid having several processes that poll the table at the same time. I figure a good way of doing that would be if the process could detect whether the browser that started the request is still listening to it. Is there a way to do this?

I know I can use javascript to disable the button so it can only be "submit"ed once. I will be doing this, however I want a solution that will not require the user to have javascript enabled.

Thanks in advance.

In reply to How to tell if a browser is still listening to a CGI by Sifmole

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