PHP Australia Conference 2015

socket_shutdown

(PHP 4 >= 4.1.0, PHP 5)

socket_shutdownCierra 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 3 notes

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2
recycling dot sp dot am at gmail dot com
4 years ago
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.
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1
ludvig dot ericson at gmail dot com
9 years ago
Sockets should be first shutdown and then closed.
<?php
// Sample: Closing sockets gracefully
socket_shutdown($sock, 2);
socket_close($sock);
?>
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0
richard dot thomas at psysolutions dot com
8 years ago
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.
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