socket_set_option
Shutdown and SOL_TCP:
<?php
$a= socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_shutdown($a, 2)
?>
PHP Warning: socket_shutdown(): unable to shutdown socket [107]: Transport endpoint is not connected
Shutdown and SOL_UDP:
<?php
$a= socket_create(AF_INET, SOCK_STREAM, SOL_UDP);
socket_shutdown($a, 2)
?>
PHP Warning: socket_shutdown(): unable to shutdown socket [107]: Transport endpoint is not connected
Conclusion: if you are not actually connected, shutdown will fails with socket_error = 107, Transport endpoint is not connected. This is true for both TPC and UDP connection (which is suprising, UDP being a connectionless protocol). This is true no matter the value set for the how parameter.
socket_shutdown
(PHP 4 >= 4.1.0, PHP 5)
socket_shutdown — Cierra un socket para dejar de recibir, enviar, o ambos
Descripción
bool socket_shutdown
( resource $socket
[, int $how = 2
] )
La función socket_shutdown() permite detener la entrada y salida de toda la información (lo predeterminado) que está siendo enviada a través del socket
Parámetros
- socket
-
Un recurso socket válido creado con socket_create().
- how
-
El valor de how puede ser uno de los siguientes:
Valores posibles de how 0 Cerra el socket para dejar de leer 1 Cerra el socket para dejar de escribir 2 Cerra el socket para dejar de leer y escribir
Valores devueltos
Devuelve TRUE en caso de éxito o FALSE en caso de error.
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User Contributed Notes
socket_shutdown
recycling dot sp dot am at gmail dot com
16-Sep-2010 04:09
korvin at biz dot by
21-May-2009 09:12
Closing socket graceful
<?php
socket_shutdown($resHandle, 1);//remote host yet can read
usleep(500);//wait remote host
socket_shutdown($resHandle, 0);//close reading
socket_close($resHandle);//finaly we can free resource
?>
richard dot thomas at psysolutions dot com
23-Nov-2005 06:20
That is not a good example of a graceful shutdown. One should close the sending side of the socket and continue to read until the remote end closes its sending connection.
ludvig dot ericson at gmail dot com
02-Sep-2005 08:13
Sockets should be first shutdown and then closed.
<?php
// Sample: Closing sockets gracefully
socket_shutdown($sock, 2);
socket_close($sock);
?>