Re: Preventing Oversized Uploads

I think Apache starts CGI script only after it has received the whole request. So your script isn't started till Apache receive all data, and Apache doesn't have an idea about limit set by your script. Use LimitRequestBody directive in Apache config instead.

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Re^2: Preventing Oversized Uploads by Kirsle (Pilgrim) on Dec 05, 2009 at 03:09 UTC
That was my thought too at one point. But then I set that 15 second alarm clock for the whole script. In Google Chrome you can see the % uploaded while it sends the file to the server; immediately after it got to 100% I got my error message about the timeout expiring. So it looked like Apache started my CGI script earlier and it waited for a while (perhaps when the CGI object is created it blocks until Apache receives the whole request?) Setting an upload hook is how you can create a progress bar for file uploads; in this case the CGI script is running since the beginning of the request. Although in my experience if the upload hook crashes (intentionally or due to run-time error) it doesn't affect the rest of the script. Anyway, I looked into that Apache config instead. I put a limit of 5 MB for the directory that contains this (and other) CGI scripts - none of the other CGI scripts accept inputs greater than 5 MB (in fact none of them accept higher than 1 MB but I'm adding some wiggle room). Tried uploading VirtualBox again instead of a font file, and after 5 MB was uploaded Apache reset my connection. :) Cheers.	[reply]

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Re^2: Preventing Oversized Uploads
by Kirsle (Pilgrim) on Dec 05, 2009 at 03:09 UTC

That was my thought too at one point. But then I set that 15 second alarm clock for the whole script. In Google Chrome you can see the % uploaded while it sends the file to the server; immediately after it got to 100% I got my error message about the timeout expiring. So it looked like Apache started my CGI script earlier and it waited for a while (perhaps when the CGI object is created it blocks until Apache receives the whole request?)

Setting an upload hook is how you can create a progress bar for file uploads; in this case the CGI script is running since the beginning of the request. Although in my experience if the upload hook crashes (intentionally or due to run-time error) it doesn't affect the rest of the script.

Anyway, I looked into that Apache config instead. I put a limit of 5 MB for the directory that contains this (and other) CGI scripts - none of the other CGI scripts accept inputs greater than 5 MB (in fact none of them accept higher than 1 MB but I'm adding some wiggle room). Tried uploading VirtualBox again instead of a font file, and after 5 MB was uploaded Apache reset my connection. :)

Cheers.

[reply]