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socket_strerror> <socket_set_option
[edit] Last updated: Fri, 17 May 2013

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socket_shutdown

(PHP 4 >= 4.1.0, PHP 5)

socket_shutdownChiude un socket in ricezione, in invio o in entrambi i sensi

Descrizione

bool socket_shutdown ( resource $socket [, int $how ] )
Avviso

Questa funzione è SPERIMENTALE. Ovvero, il comportamento di questa funzione, il nome di questa funzione, in definitiva tutto ciò che è documentato qui può cambiare nei futuri rilasci del PHP senza preavviso. Siete avvisati, l'uso di questa funzione è a vostro rischio.

La funzione socket_shutdown() permette di chiudere i trasferimenti in ingresso, in uscita o in entrambe le direzione per il socket

I valori previsti per how sono i seguenti:

possible values for how
0 Chiude il socket in lettura.
1 Chiude il socket in scrittura.
2 Chiude il socket in lettura e scrittura.



socket_strerror> <socket_set_option
[edit] Last updated: Fri, 17 May 2013
 
add a note add a note User Contributed Notes socket_shutdown - [4 notes]
up
2
recycling dot sp dot am at gmail dot com
2 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.
up
2
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.
up
0
korvin at biz dot by
4 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($resHandle);//finaly we can free resource
?>
up
0
ludvig dot ericson at gmail dot com
7 years ago
Sockets should be first shutdown and then closed.
<?php
// Sample: Closing sockets gracefully
socket_shutdown($sock, 2);
socket_close($sock);
?>

 
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