note 57335 added to function.socket-listen
| From: | TarikKettani at osu1 dot php dot net | 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
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