socket_set_nonblock
It appears that Winsock does not acknowledge timeout (send and receive) on Windows.
socket_set_option
(PHP 4 >= 4.3.0, PHP 5)
socket_set_option — Modifie les options de socket
Description
socket_set_option() configure l'option spécifiée par
optname, au niveau de protocole
level à la valeur pointée par
optval pour le socket spécifié par
socket.
Liste de paramètres
-
socket -
Une ressource de socket valide, créée par la fonction socket_create() ou la fonction socket_accept().
-
level -
Le paramètre
levelspécifie la couche du protocole de l'option. Par exemple, pour modifier une option de la couche socket, un niveau égal àSOL_SOCKETva être utilisé. Les autres niveaux, comme TCP, peuvent être utilisés en spécifiant un numéro de protocole pour ce niveau. Les numéros de protocoles peuvent être utilisés en utilisant la fonction getprotobyname(). -
optname -
Les options disponibles sont les mêmes que pour la fonction socket_get_option().
-
optval -
La valeur de l'option.
Valeurs de retour
Cette fonction retourne TRUE en cas de
succès ou FALSE si une erreur survient.
Exemples
Exemple #1 Exemple avec socket_set_option()
<?php
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (!is_resource($socket)) {
echo 'Impossible de créer le socket : '. socket_strerror(socket_last_error()) . PHP_EOL;
}
if (!socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1)) {
echo 'Impossible de définir l\'option du socket : '. socket_strerror(socket_last_error()) . PHP_EOL;
}
if (!socket_bind($socket, '127.0.0.1', 1223)) {
echo 'Impossible de lier le socket : '. socket_strerror(socket_last_error()) . PHP_EOL;
}
$rval = socket_get_option($socket, SOL_SOCKET, SO_REUSEADDR);
if ($rval === false) {
echo 'Impossible de récupérer l'option du socket : '. socket_strerror(socket_last_error()) . PHP_EOL;
} else if ($rval !== 0) {
echo 'SO_REUSEADDR est défini sur le socket !' . PHP_EOL;
}
?>
Historique
| Version | Description |
|---|---|
| 4.3.0 | La fonction a été renommée. Elle s'appelait, avant, socket_setopt(). |
add a note
User Contributed Notes
socket_set_option - [6 notes]
ckozler at kozler dot net ¶
1 year ago
DaveRandom ¶
2 years ago
Setting the socket timeout microseconds ('usec') does not work under Windows, at least under PHP/5.2.9:
<?php
$timeout = array('sec'=>1,'usec'=>500000);
socket_set_option($socket,SOL_SOCKET,SO_RCVTIMEO,$timeout);
var_dump(socket_set_option($socket,SOL_SOCKET,SO_RCVTIMEO));
?>
Output on Windows box:
array(2) {
["sec"]=>
int(1)
["usec"]=>
int(0)
}
Output on Linux box:
array(2) {
["sec"]=>
int(1)
["usec"]=>
int(500000)
}
aeolianmeson at ifacfchi dot blitzeclipse dot com ¶
4 years ago
Lingering will sometimes not work when you're working with non-blocking sockets. Even if the socket is set to linger and you keep tying to close until the socket doesn't return an error and the resource is no longer identifiable as type 'Socket', the socket may STILL close without sending everything.
Therefore, in the event that you are using non-blocking sockets (which is preferable if you care at all about signaling), you should set the socket as blocking (socket_set_block()) before calling to close it. This will allow everything to flush before it returns.
Dustin Oprea
ludvig dot ericson at gmail dot com ¶
6 years ago
I would like to comment on the previous note regarding blocking sockets.
There is more to blocking sockets than waiting for data to be received when trying to be read upon, just to make example, a listening blocking socket will wait for a client to try to connect before it returns when you socket_accept() it.
drenintell ¶
8 years ago
To expand a bit more on what "tim at e2-media dot co dot nz" started.
SO_SNDTIMEO is one of the many constants you can use with socket_set_option.
See http://ca.php.net/manual/en/ref.sockets.php for the available Predefind Constants and visit http://man.he.net/man2/setsockopt for the meaning of the ones relevant.
Tim's example might seem at first a bit non-intuitive since he is using the SO_SNDTIMEO constant. Which means, if the socket has to send out data, it must do it within the limit specified - in his case 10 seconds. Usually you won't set a timeout for sending out data. Nevertheless, the example is valid, and there are situations where you need to do so.
A more intuitive use of socket_set_option would be to set a time out for a blocking socket (a socket that waits for data to be receive when read from). You would do this like so:
socket_set_option($socket,SOL_SOCKET, SO_RCVTIMEO, array("sec"=>0, "usec"=>100));
Notice that sec= 0 and usec= 100; Depending on how long you want your program to wait to recieve data, you might want to change these values.
Regards,
drenintell
tim at e2-media dot co dot nz ¶
9 years ago
To set a socket timeout value (assuming you've set it blocking) use:
socket_set_option(
$socket,
SOL_SOCKET, // socket level
SO_SNDTIMEO, // timeout option
array(
"sec"=>10, // Timeout in seconds
"usec"=>0 // I assume timeout in microseconds
)
);