Bug #74834 [Opn->Nab]: stream_socket_shutdown don't work!

Edit report at https://bugs.php.net/bug.php?id=74834&edit=1 ID: 74834 Updated by: bwoebi@php.net Reported by: 452476865 at qq dot com Summary: stream_socket_shutdown don't work! -Status: Open +Status: Not a bug Type: Bug Package: Streams related Operating System: ubuntu PHP Version: 5.6.30 Block user comment: N Private report: N New Comment: If you do not have a well-defined reason for not using fclose(), better use fclose() rather than stream_socket_shutdown(STREAM_SHUT_RDWR). It will remain in TIME_WAIT until you actually close the resource (and implicitly the file descriptor beyond it). Previous Comments: ------------------------------------------------------------------------ [2017-06-30 10:42:08] kelunik@php.net No, stream_socket_shutdown doesn't close a connection, use fclose for that. ------------------------------------------------------------------------ [2017-06-30 10:39:21] 452476865 at qq dot com Description: ------------ stream_socket_shutdown don't close the TCP connection. this cause TCP connection overflow when high concurrency on WEB server. i think stream_socket_shutdown should close TCP connection, not just TIME_WAIT status. Test script: --------------- <?php function one($host, $port){ $host = 'tcp://' . $host . ':' . $port; $socket = @stream_socket_client( $host, $errorNumber, $errorDescription, ini_get("default_socket_timeout") ); stream_socket_shutdown($socket, STREAM_SHUT_RDWR); } $host = '192.168.2.243'; $port = 7000; for($i=0; $i<100; $i++){ one($host, $port); } echo "done"; ?> Expected result: ---------------- netstat -an |grep '192.168.2.243' return : none Actual result: -------------- netstat -an |grep '192.168.2.243' return : tcp 0 0 192.168.2.66:57336 192.168.2.243:7000 TIME_WAIT tcp 0 0 192.168.2.66:57282 192.168.2.243:7000 TIME_WAIT tcp 0 0 192.168.2.66:57222 192.168.2.243:7000 TIME_WAIT tcp 0 0 192.168.2.66:57298 192.168.2.243:7000 TIME_WAIT tcp 0 0 192.168.2.66:57236 192.168.2.243:7000 TIME_WAIT tcp 0 0 192.168.2.66:57318 192.168.2.243:7000 TIME_WAIT tcp 0 0 192.168.2.66:57398 192.168.2.243:7000 TIME_WAIT ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74834&edit=1