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 — Fecha um socket para receber, enviar dados ou ambos.
Descrição
bool socket_shutdown
( resource
$socket
[, int $how
] )Aviso
Esta função é EXPERIMENTAL. O comportamento desta função, seu nome, incluindo toda documentação pode ser modificado sem aviso em futuras versões do PHP. Esta função deve ser usada por sua própria conta e risco.
A função socket_shutdown() permite que você pare
a entrada, saída ou todos os dados (este é o padrão) de serem enviados
através do socket
O valor de how pode ser um dos seguintes:
| 0 | Fecha o socjet para leitura |
| 1 | Fecha o socket para escrita |
| 2 | Fecha o socket para leitura e escrita |
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User Contributed Notes
socket_shutdown - [4 notes]
recycling dot sp dot am at gmail dot com ¶
2 years ago
richard dot thomas at psysolutions dot com ¶
7 years ago
That is not a good example of a graceful shutdown. One should close the sending side of the socket and continue to read until the remote end closes its sending connection.
korvin at biz dot by ¶
3 years ago
Closing socket graceful
<?php
socket_shutdown($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
?>
ludvig dot ericson at gmail dot com ¶
7 years ago
Sockets should be first shutdown and then closed.
<?php
// Sample: Closing sockets gracefully
socket_shutdown($sock, 2);
socket_close($sock);
?>