note 57335 added to function.socket-listen

From: Date: Fri, 30 Sep 2005 18:54:50 +0000
Subject: note 57335 added to function.socket-listen
Groups: php.notes 
Request: Send a blank email to php-notes+get-96077@lists.php.net to get a copy of this message
For a UDP listening server in php, let's say you need something to listen for 2 seconds and give you all the received data in that time .. beware of the cpu load of a while(true) or while (time() <= $timeout) kinda thing ... i managed to go from a 100% cpu usage to something more reasonable by introducing a little microsleep between the socket_recv polls : $sock2 = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP); if(!socket_bind($sock2, $your_ip, 666)) { socket_close($sock2); die( 'socket_bind failed: '.socket_strerror(socket_last_error())); } socket_set_nonblock($sock2); $timeout = time() + (2); // 3 seconds timeout while (time() <= $timeout) { while (@socket_recv($sock2, $data, 8192, 0)) { // do something useful with $data :) } usleep(100000); // 100ms delay keeps the doctor away } socket_close($sock2); bonne chance :) ---- Manual Page -- http://www.php.net/manual/en/function.socket-listen.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57335 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57335&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57335&report=yes Search -- http://master.php.net/manage/user-notes.php

« previous php.notes (#96077) next »