GET Request null

[cjdrake]

Hi,

We recently setup a custom 404 error page for our ASP.NET application which e-mails details of the missing page to a specified account.

Surprisingly we were immediately bombarded with 404 errors for content where the file name is 'null'.

Cross-referencing this with IIS logs it is definitely a GET request for the file and not an error in the custom 404 script, it also appears to only happen all on postbacks.

It doesn't seem to be affecting our application massively but I can't imagine this is correct behaviour and obviously isn't very efficient - can anyone explain this at all?

Thanks in advance.

 

[ca8msm]

That sounds bizarre! Does it happen whilst you debug as well?


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[cjdrake]

I just check, yes it does happen when I debug too.

Strange huh?!

 

[ca8msm]

Yeah, seems odd to me. So, whilst debugging, can you try to narrow down what is going on (i.e. is the page being requested, then a request for each file etc). If so, you may be able to find out which request is sending a blank filename.

Also, can you paste the code you are using to check for the file?


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[cjdrake]

Thanks alot for your fast response.

By analysing the logs further I've managed to narrow down the behaviour to pages which contain IE WebControls (what a rubbish decision it was to use these!).

I will do some further investigation first so as not to waste any more of your time!

Thanks again.