Bug #55438 [Asn->Csd]: race condition: curlwapper is not sending http header randomly

Edit report at https://bugs.php.net/bug.php?id=55438&edit=1 ID: 55438 Updated by: pierrick@php.net Reported by: xuefer at gmail dot com Summary: race condition: curlwapper is not sending http header randomly -Status: Assigned +Status: Closed Type: Bug Package: cURL related Operating System: gentoo PHP Version: 5.3.6 Assigned To: pierrick Block user comment: N Private report: N New Comment: Automatic comment on behalf of pierrick Revision: http://git.php.net/?p=php-src.git;a=commit;h=c46e1cdcae70254cfc0b7d5781f2c71162a3734d Log: Fixed bug #55438 (Curlwapper is not sending http header randomly) Previous Comments: ------------------------------------------------------------------------ [2012-12-19 17:15:30] phpnet at lostreality dot org Ok, thanks for the info. I was mostly wondering if it would make 5.3.x at all. Well now it seems I just have to wait for 5.3.21 to be released, and CPanel to upgrade, and so on :) ------------------------------------------------------------------------ [2012-12-19 16:57:15] pierrick@php.net Unfortunately, it's to late for 5.3.20 and 5.4.10, sorry. It will only be available in 5.3.21 and 5.4.11 ------------------------------------------------------------------------ [2012-12-19 15:17:12] phpnet at lostreality dot org Great. Any chance this can make it to 5.3.20 also? ------------------------------------------------------------------------ [2012-12-19 07:51:36] pierrick@php.net Ok, I finally reproduced the problem. I was trying the code snippet on my local network and everything was fine, once I modified the code to fetch an URL on a slower network I had the problem. Since curl multi is used, it sometime happen that the resource is freed before the curl multi really execute the query. The patch looks good, I'll have a second look tomorrow and will commit it. Thanks for your help on this one :) ------------------------------------------------------------------------ [2012-12-19 06:01:04] phpnet at lostreality dot org I have curl-7.15.5-15.el5 according to rpm -q, but I can only locate /usr/lib/libcurl.so.3.0.0 and /usr/lib64/libcurl.so.3.0.0 on my machine I'm testing on (CentOS 5.8). The binary says: /usr/bin/curl -V curl 7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Normally, I use the stock RPMs for PHP, but a recent project I was working on failed to run properly on another machine, where the owners also use CentOS 5.8, but use CPanel/WHM instead of the CentOS RPMs for PHP. CPanel uses the --with-curlwrappers option, where as the stock CentOS and RHEL RPMs have never used that option on any of their builds. It took a lot of digging before I realized that it was the --with-curlwrappers option that caused the scripts to fail on that machine while working perfectly on mine. To verify if the headers were actually sent, I used: tcpdump -i eth1 -Als0 host www.example.com I had two PuTTY windows open, one with tcpdump, the other running the test script I mentioned before with: ./php-5.4.9/sapi/cli/php ./test.php It was pretty clear to me that the headers were never sent before the patch, and always sent after the patch. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=55438 -- Edit this bug report at https://bugs.php.net/bug.php?id=55438&edit=1