Bug #78485 [Com]: Random "couldn't resolve host" failures in curl_multi

Edit report at https://bugs.php.net/bug.php?id=78485&edit=1 ID: 78485 Comment by: sinus at sinpi dot net Reported by: sinus at sinpi dot net Summary: Random "couldn't resolve host" failures in curl_multi Status: Open Type: Bug Package: HTTP related Operating System: CloudLinux PHP Version: 7.2.22 Block user comment: N Private report: N New Comment: The situation develops. Disabling the opcache module made the issue go away entirely! Previous Comments: ------------------------------------------------------------------------ [2019-09-03 09:26:09] sinus at sinpi dot net I now added CURLOPT_VERBOSE output to the bug.php script, and it demonstrated the failing handle throwing the following at me: * getaddrinfo() thread failed to start The plot thickens. ------------------------------------------------------------------------ [2019-09-02 21:17:57] sinus at sinpi dot net Seeing as I've never seen this happen on my previous host, I suspect it's a conflict with some local setup, not a bug in curl itself - but it'd be nice if there was a way to find out what could possibly cause it to behave like that. ------------------------------------------------------------------------ [2019-09-02 20:54:23] sinus at sinpi dot net You might have to reload it a few times, as I said, it's pretty random. Reproductions of the bug are seen as "Msg: 6 for handle <x>". ------------------------------------------------------------------------ [2019-09-02 20:51:30] sinus at sinpi dot net The issue can be seen at http://djab.eu/isuvu/bug.php with source viewable at http://djab.eu/isuvu/bug.php.txt . ------------------------------------------------------------------------ [2019-09-02 20:35:04] nikic@php.net Is there any publicly accessible host for which this might be reproduced? ------------------------------------------------------------------------ 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=78485 -- Edit this bug report at https://bugs.php.net/bug.php?id=78485&edit=1