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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 49113] New: PDF's not reverse proxied / disk cached properly, and not accessible
Date Tue, 13 Apr 2010 09:58:47 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=49113

           Summary: PDF's not reverse proxied / disk cached properly, and
                    not accessible
           Product: Apache httpd-2
           Version: 2.2.15
          Platform: Sun
        OS/Version: Solaris
            Status: NEW
          Severity: regression
          Priority: P2
         Component: mod_proxy
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: robert.blandward@btinternet.com


Hi,

I have recently re-compiled and make installed httpd 2.2.15 to upgrade our
exisiting httpd 2.2.6 live environment. We use no third party modules.  Our
config parameters (from our exisiting 2.2.6 config.nice) are:

"./configure" \
"--prefix=/usr/local/apache2_stellent" \
"--disable-ipv6" \
"--disable-auth" \
"--disable-autoindex" \
"--enable-cache" \
"--enable-disk-cache" \
"--enable-expires" \
"--enable-headers" \
"--enable-mime-magic" \
"--enable-proxy" \
"--enable-proxy-http" \
"--enable-rewrite" \
"--enable-vhost-alias" \
"$@"

I am building on Solaris 9 9/05, with Sunfreeware builds of gcc3.4.6 and
libiconv 1.13.1.

configure, make and make install all work, and we are not modifying any
makefiles.

We are using httpd in this case as a reverse proxy/httpd accellerator using
disk-cache through to an Oracle/Stellent content manager (Win 2003SP2,IIS6)

What we are seeing though once using httpd 2.2.15 binaries, is that when
accessing PDF's using firefox, the document window (viewing inside firefox)
will display the first page, but when scrolling down it will lock temporarily
(approx 3-4 minutes) and then error saying "There was an error reading this
document (14)". That, or the document will immediately fail to load with the
error "There was an error processing a page. There was a problem reading this
document (109).

Viewing the same document in IE7, winxp sp2, the page does not load at all and
says "Internet explorer cannot download xxx.pdf from xxx.  Internet explorer
was not able to open this internet site.  The requested site is either
unavailable or cannot be found.  Please try again later."

There is nothing in the error_log.  The access_log (for same document) only
reports:

IE access entry:
*removed* - - [13/Apr/2010:10:41:51 +0100] "GET
/consumption/groups/public/documents/article/ncc043240.pdf HTTP/1.1" 206 23801
"http://*removed*/consumption/idcplg?IdcService=SS_GET_PAGE&ssDocName=NCC007171"
"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR
2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"

Firefox access entries:
*removed* - - [13/Apr/2010:10:50:21 +0100] "GET
/consumption/groups/public/documents/article/ncc043240.pdf HTTP/1.1" 206 23801
"http://*removed*/consumption/idcplg?IdcService=SS_GET_PAGE&ssDocName=NCC007171"
"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.3) Gecko/20100401
Firefox/3.6.3 (.NET CLR 3.5.30729)"
*removed* - - [13/Apr/2010:10:50:21 +0100] "GET
/consumption/groups/public/documents/article/ncc043240.pdf HTTP/1.1" 206 23801
"-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.3) Gecko/20100401
Firefox/3.6.3 (.NET CLR 3.5.30729)"

The PDF being accesses above is multipage and colour, and above the filesize
threshold so is being accessed using byterange requests.

In my investigation so far, I have compiled all versions of httpd 2.2.x since
2.2.6 to see when the problem appeared, and the last version it worked in was
2.2.11.  The problems first appeared in 2.2.12, and appear to be identical in
minor version 13, 14 and 15.

Pease can we find out why this broke in builds after 11?

Regards,
Rob

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