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Bug #22772 Linefeed prepended to start of http-body
Submitted: 2003-03-18 14:10 UTC Modified: 2003-03-24 04:19 UTC
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (100.0%)
From: c938264 at student dot dtu dot dk Assigned:
Status: No Feedback Package: Output Control
PHP Version: 4.3.0 OS: freeBSD 4.3, Apache/1.3.27
Private report: No CVE-ID: None
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 [2003-03-18 14:10 UTC] c938264 at student dot dtu dot dk
I found this problem trying to serve a binary file.
The basic structure of this part of my script is:

header('Content-Type: ..');
header('Content-Length: ..');
<output file contents>

where <output file contents> would be readfile or similar. However I learned that the first byte of the served file was always a 0x0a (linefeed). I have used telnet to create  requests and log responses, and I have found that the response has the following structure:


i.e. and extra <lf> prepended to the body part of the response. I have tested several different scenarios:

* no headers, echo some text
* set chunked transfer encoding, do a readfile
* set chunked transfer encoding, echo some text
* set chunked transfer encoding, use fwrite on php://stdout

All methods prepend the linefeed. The telnet dump verify that the headers are set correctly, so this should rule-out the possibility that the linefeed stems from any text before the <? -tag.

PHP is build with the following configuration line:

'./configure' '--with-apache=../apache_1.3.27' '--enable-safe-mode' '--with-mhash' '--enable-xslt' '--with-xslt-sablot' '--enable-sablot-errors-descriptive' '--with-pdflib' '--with-imap=/usr/local/imap' '--with-mcrypt' '--with-pspell' '--with-gettext' '--with-mysql=/usr/local' '--with-pgsql' '--with-gd' '--with-ttf' '--with-t1lib' '--with-png-dir' '--with-zlib-dir=/usr/local/zlib' '--enable-memory-limit' '--with-jpeg-dir' '--with-freetype-dir' '--enable-freetype-4bit-antialias-hack' '--with-tiff-dir' '--enable-exif' '--enable-calendar'

I think this problem may be related to #18740..

/David Holdt


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 [2003-03-24 04:19 UTC]
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
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