I have received this a few times and I thought it was
related to the Code Red virus as the only time I
received them was right before Code Red abused my IIS.
I also thought that it may be an attempt to send a
malformed header request with a invalid content length
for an .htr file to IIS which is one of the many IIS
exploits.
I tried using Randy's RequestLogger to log these
requests to see what the request was before tomcat
tried to process it, but they stopped before I enabled
it.
what I did notice is that viewing stderr.log in
notepad showed a space following the 3569. And when I
was nosing around the tomcat source(3.2.1), it looked
like it was the content length that was invalid, based
upon the stack trace and the error message.
Charlie
> -----Original Message-----
> From: Brandon Cruz [mailto:[EMAIL PROTECTED]]
> Sent: Monday, August 27, 2001 5:34 PM
> To: [EMAIL PROTECTED]
> Subject: RE: Strange Number format exception
>
>
> >I believe, from Brandon's post, that he understands
the concept of a
> >NumberFormatException. He real question is why it
is
> occurring and as
> >you can see in his stack trace:
>
> > 2001-08-27 02:04:14 - ContextManager: Error
reading
> request, ignored -
> > java.lang.NumberFormatException: 3379
>
>
> >the String which is trying to be interpreted seems
to be
> 3379 which is
> >a perfectly valid Number(providing there are no
"invisible"
> whitespace
> >characters after the 9.
>
> >I would pose that this is a bug and would suggest
searching
> the developer
> >list to see if anyone has mentioned this one.
>
> >Also, check all your config/xml files and make sure
there is
> no whitespace
> >where there shouldn't be. A good idea would be to
search for a file
> >containing
> >the string 3379.
>
> >Good Luck.
>
> Thank you! You are correct, I do understand what
the exception is
> conceptually, but I can't find out what is causing
it. It
> must be a bug
> because I have seen other people with this post and
it is
> always the same
> number. There is not any string "3379" in my files,
extra
> whitespace is
> always a possiblity. Since it does not seem to do
much more
> than put a
> bunch of extra garbage in the logs, I guess I'll
ignore it
> and try to get
> more important things done first. If anyone else is
familiar
> with this
> problem or the solution, please send me an email. I
would
> really appreciate
> it!
>
> >---
> >Michael Wentzel
> >Software Developer
> >Software As We Think - http://www.aswethink.com
>
>
> Brandon
>
>
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