ContentLength of page is not available, how to calculate progress value?

Question

i have a problem that the content-length of header is undetermined ie -1 in my case. So can anyone please give me an idea on how to calculate the progress for the progress view, so that i display the progress view as the page loads.. .. thanks in advance!! :

Answer 1

It's impossible by definition. If you don't know how big IT is, you can't know how much of IT you now have or how much of IT there still is.

Answer 2

There isn't a way to. In a webbrowser they usually say '33k of unknown' or show a ajax-y spinner