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 — Soketle ilgili seçenekleri belirler
Açıklama
Belirtilen soket'in seçenek
seçeneğine belirtilen protokol seviye'si için
değer değerini atar.
Değiştirgeler
-
soket -
socket_create() veya socket_accept() ile oluşturulmuş geçerli bir soket özkaynağı.
-
seviye -
Seçeneğin geçerli olacağı protokol seviyesi. Örneğin soket seviyesindeki seçenekleri almak için bu değiştirgede
SOL_SOCKETkullanılabilirdi. TCP gibi diğer seviyeler, seviyenin protokol numarası belirtilerek kullanılabilir. Protokol numaralarını getprotobyname() işleviyle alabilirsiniz. -
seçenek -
socket_get_option() işleviyle alınan soket seçeneklerinden biri olmalıdır.
-
değer -
Seçeneğin değeri.
Dönen Değerler
Başarı durumunda TRUE, başarısızlık durumunda FALSE döner.
Örnekler
Örnek 1 - socket_set_option() örneği
<?php
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (!is_resource($socket)) {
echo 'Soket oluşturulamadı: '.
socket_strerror(socket_last_error()) . PHP_EOL;
}
if (!socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1)) {
echo 'Sokete seçenek atanamadı: '.
socket_strerror(socket_last_error()) . PHP_EOL;
}
if (!socket_bind($socket, '127.0.0.1', 1223)) {
echo 'Sokete bağlanılamadı: '.
socket_strerror(socket_last_error()) . PHP_EOL;
}
$rval = socket_get_option($socket, SOL_SOCKET, SO_REUSEADDR);
if ($rval === false) {
echo 'Soket seçeneği alınamadı: '.
socket_strerror(socket_last_error()) . PHP_EOL;
} else if ($rval !== 0) {
echo 'Sokete SO_REUSEADDR atandı!' . PHP_EOL;
}
?>
Sürüm Bilgisi
| Sürüm: | Açıklama |
|---|---|
| 4.3.0 | İşlevin ismi değişti. Eski ismi socket_setopt() idi. |
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)
}
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
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.
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
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
)
);
