-none- 2007-08-16 - By Len Popp
Back
There were in fact bugs with requests > 2GB in both Tomcat and mod_jk
which were fixed recently, as Rainer pointed out. (And some of the
code was using -1 if the content-length was too large.) Upgrading to
6.0.14 or the next 5.5 release should fix the problem.
There's no size limit on commons-fileupload as far as I can tell, but
I've never tried it with a huge file.
--
Len
On 8/16/07, Christopher Schultz <chris@(protected)> wrote:
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> DAvid,
>
> David Hesson wrote:
> > The
> > content-length has a maximum value of 2.x billion, which is right under
> > two gigabytes.
>
> Is this a limit on commons-upload? The header itself can contain an
> arbitrarily high number, so there's no inherent file-size limit on
> uploads over HTTP.
>
> > A 2.xGB file will result in a negative content length
> > from integer overflow into the final, negative bit position.
>
> I don't think so. Java doesn't overflow like C does. Attempting to read
> an int that's too big results in an exception, not a negative result:
>
> $ cat > IntReadTest.java
> public class IntReadTest
> {
> public static void main(String[] args)
> {
> System.out.println(Integer.parseInt(args[0]));
> }
> }
> ^D
> $ javac IntReadTest
> $ java IntReadTest 2147483647
> 2147483647
> $ java IntReadTest 2147483648
> Exception in thread "main" java.lang.NumberFormatException: For input
> string: "2147483648"
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
> at java.lang.Integer.parseInt(Integer.java:463)
> at java.lang.Integer.parseInt(Integer.java:497)
> at IntReadTest.main(IntReadTest.java:5)
> $
>
> Now, if you were using an old version of mod_jk (which you didn't
> mention), it's possible that the Content-Length header is being
> corrupted. Since you have a filter chain, can you print the (String)
> value of the Content-Length header before processing begins? That would
> be helpful.
>
> - -chris
>
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