Bug #79000 [NEW]: Non-blocking socket stream reports EAGAIN as error

From: nikic Operating system: PHP version: 7.4Git-2019-12-19 (Git) Package: Streams related Bug Type: Bug Bug description:Non-blocking socket stream reports EAGAIN as error Description: ------------ EAGAIN/EWOULDBLOCK writes result in a notice for non-blocking socket streams. Since PHP 7.4 additionally false will be returned. Test script: --------------- <?php error_reporting(E_ALL); [$sock1, $sock2] = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP); $str = str_repeat('a', 1000000); stream_set_blocking($sock1, false); var_dump(fwrite($sock1, $str)); var_dump(fwrite($sock1, $str)); Expected result: ---------------- int(196608) int(0) Actual result: -------------- Notice: fwrite(): send of 8192 bytes failed with errno=11 Resource temporarily unavailable in /home/nikic/php-7.4/t246.php on line 6 int(196608) Notice: fwrite(): send of 8192 bytes failed with errno=11 Resource temporarily unavailable in /home/nikic/php-7.4/t246.php on line 7 bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=79000&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79000&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79000&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79000&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79000&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79000&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79000&r=support Expected behavior: https://bugs.php.net/fix.php?id=79000&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79000&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79000&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79000&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79000&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79000&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79000&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79000&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79000&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79000&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79000&r=mysqlcfg