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From "Paul Benedict (JIRA)" <>
Subject [jira] Commented: (FILEUPLOAD-140) Means to preserve text parameters when upload limit exceeded
Date Mon, 09 Jul 2007 00:42:04 GMT


Paul Benedict commented on FILEUPLOAD-140:

Jochen, please re-evaluate this issue. The first link I sent you was my overall objective,
but it relates to another issue here:

On Windows and Sun machines, if there is a about 20KB of text in a JSP after an "exceeded"
upload, the connection will hang indefinitely. This was tested on multiple JDKs (4, 5, 6),
application servers (Tomcat, Weblogic), and OS. We tested with a Mac too but the issue did
not exist.

My proposed solution is no more of an "invitation for DOS attacks" anymore then transmitting
a large text field. Data is data and frameworks don't see files any different than other form
field elements.

We patched Struts, but really the patch belongs in FILEUPLOAD as an option. We could allow
the developer the option to either choose a hanging socket or a large upload. :-) I am definitely
for the latter because it allows the request to complete normally, even if it the response
takes longer.

I rate this issue as a critical or blocker because, given the stated conditions, the response
is unable to be completed unless the workaround is in place.

> Means to preserve text parameters when upload limit exceeded
> ------------------------------------------------------------
>                 Key: FILEUPLOAD-140
>                 URL:
>             Project: Commons FileUpload
>          Issue Type: Improvement
>    Affects Versions: 1.2
>            Reporter: Paul Benedict
>            Assignee: Jochen Wiedmann
> I am trying to resolve but am lacking
the means to do it. The current use is with the deprecated DiskFileUpload and I prefer to
have this class fixed first. When SizeLimitExceededException is thrown, it does not return
the items it has collected thus far. I see two possible solutions which involve adding a property
on the exception to return them:
> (1) Return the parameters thus gathered or 
> (2) finish out the input stream but throw away all file items and return only the text
> Otherwise, whenever a the upload exceeds its limit, all other input parameters disappear.

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