IIS & web.config set, but still allows large files

Server Config
1

I am wondering why when I have set everything in my web.config to limit the size of files being uploaded:

<httpRuntime requestValidationMode=“2.0” maxRequestLength=“2048” />

and

<requestFiltering>
<requestLimits maxAllowedContentLength=“2097152”></requestLimits>
</requestFiltering>

that a file of 16MB is still fully uploaded. Show the maxAllowedContentLength not cut stop processing and return an error once the file size has been reached?

Or is this just a wrong assumption?

2

Wrong Assumption I think.

Certainly with Apache / PHP etc. The entire file still gets transfered then errors when the script tries to run.

3

Thats a bit annoying especially if the user tries to upload a large file, e.g. 20Mb, then it could take them a bit, and then get told the file is too large. I know I could use a flash uploader to stop this, but that’s not built in CKFinder yet :frowning:

4

Yeah, its a problem i suffer too on sites i develop - the answer really is to use a better / more intelligent uploader to deal with problems client side.

5

For the server to know the file size it must first get the file to determine the size…No way around that.

6

In theory, filesize could be posted by the browser first… in practice it doesn’t happen / can’t be trusted… so the whole file has to cross the wire. Yep.

7