Question

I have asp.net page where some file manipulation is performed. So when user click on that page a browser show hourglass and waiting for response. I would like to know is it possible to send response to user two times in one request cycle, before time-expense action and after? I can’t change action workflow for that page and can’t use ajax or other push methods except Response object.

Answer 1

I first suggest reading server-sent events and comet programming. But to keep an HTTP connection alive, I think you can send keep-alive header in first response, then don’t close the response and wait till you send the second chunk.