Bug #72372 [NEW]: Eventual connectivity error

From: gohanman at gmail dot com Operating system: Windows 10 PHP version: 7.0.7 Package: MySQLi related Bug Type: Bug Bug description:Eventual connectivity error Description: ------------ I don't have any kind of simple repro for this, unfortunately. I'm trying to upgrade an app from 5.6 to 7.0. The app works fine in 7.0 for some period of time and then every single mysqli connection attempt starts failing with this error: Warning: mysqli::mysqli(): (HY000/2002): An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. As far as I can tell this is the result of the OS itself running out of memory for TCP buffers (https://blogs.msdn.microsoft.com/sql_protocols/2009/03/09/understanding-the-error-an-operation-on-a-socket-could-not-be-performed-because-the-system-lacked-sufficient-buffer-space-or-because-a-queue-was-full/). I'm not using either of the ini switches mention in the Microsoft article. This problem does not occur using 5.6 with the same app on the same system. I'm seeing this issue with exactly one client browser executing PHP scripts via HTTP requests. Closing the client browser and waiting for several minutes does not seem to release any resources. Once the error occurs it continues to occur on every connection attempt until Apache is restarted. I'm using the 32bit, thread-safe 7.0.7 build from windows.php.net with 32-bit apache 2.4.20 binaries from Apache Lounge. Besides mysqli, I'm enabling php_opcache as well as these extensions: curl, gettext, intl, mbstring, openssl, sockets, xsl. -- Edit bug report at https://bugs.php.net/bug.php?id=72372&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72372&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72372&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72372&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72372&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72372&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72372&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72372&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72372&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72372&r=support Expected behavior: https://bugs.php.net/fix.php?id=72372&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72372&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72372&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72372&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72372&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72372&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72372&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72372&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72372&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72372&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72372&r=mysqlcfg