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From Anthony DiSante <>
Subject Re: [users@httpd] undocumented POST size limit?
Date Fri, 10 Feb 2006 12:38:37 GMT
Anthony DiSante wrote:
> I'm running Apache 2.0.54 on a Linux system here.  Across my LAN, I can 
> upload a 1.4GB file to it via POST with a CGI script, no problem.  But 
> if I try to upload a 2.1GB file, the upload never starts; the server 
> refuses it.
> I checked the server's access log to see what was going on.  When the 
> client was Internet Explorer, the access log shows just a single line:
> - - [10/Feb/2006:06:58:22 -0500] "POST 
> /cgi-bin/upload/filechucker.cgi?&serial=1182736... HTTP/1.1" 413 428 
> "" "Mozilla/4.0 
> (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)"
> As you can see, the response code is 413, which is "Request Entity Too 
> Large".  And the client receives an error page in the browser.
> When the client is Firefox, however, the request is never logged at all, 
> and no error is sent to the browser -- it just sits there as though 
> you'd never attempted to start the upload in the first place.
> In both cases, though, the upload never even begins.  I'm trying to 
> figure out why this is.  The Apache docs mention a LimitRequestBody 
> directive which would seem to be it, except that it defaults to 0, i.e. 
> unlimited.  And even when I explicitly set it to 0 in my Apache config, 
> I get the same behavior.
> Can anyone else confirm this behavior, or report that they actually CAN 
> upload a file >2GB?  Or is there some other setting that could be 
> limiting the size of POST data?

And just to clarify, the server's filesystem is ext3; it does support files 
 >2GB, i.e.:

[server]$ dd if=/dev/zero of=/tmp/file2.2GB.junk bs=512 count=4500000
4500000+0 records in
4500000+0 records out
[server]$ ls -alh /tmp/file2.2GB.junk
-rw-r--r--  1 me users 2.2G Feb 10 07:36 /tmp/file2.2GB.junk
[server]$ ls -al /tmp/file2.2GB.junk
-rw-r--r--  1 me users 2304000000 Feb 10 07:36 /tmp/file2.2GB.junk

Anthony DiSante
Encodable Industries

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