If using Unix Sockets, and you want to use SO_PEERCRED, you can use the number 17 for the optname (and SOL_SOCKET for the level). The PID of the connecting process will be returned.
(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
socket_get_option — Pega opções de socket para o socket
Esta função é EXPERIMENTAL. O comportamento, seu nome e documentação podem mudar sem aviso em futuras versões do PHP. Utilize por sua própria conta e risco.
Esta função não está documentada; somente a lista de argumentos está disponível.
Nota:
Essa função é para ser usada chamando
socket_getopt()primeiramente para PHP 4.3.0
If using Unix Sockets, and you want to use SO_PEERCRED, you can use the number 17 for the optname (and SOL_SOCKET for the level). The PID of the connecting process will be returned.
Just 2 notes here:
- On UNIX, If SO_DEBUG is set, the php program needs an effective user id of 0.
- activating SO_OOBINLINE on a socket is equivalent to passing MSG_OOB flag to each recieving functions used with that socket (eg: socket_recv, socket_recvfrom).
I was playing around with this option to use multiply socket connections with same hostname and same port (IRC). However the socket function needed for this is SO_REUSEPORT.
Though the majority of linux distro's does not have that yet officially implented in there distro's.
However for debian there is an patch that can be installed to get it working:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c617f398edd4db2b8567a28e899a88f8f574798d
it has some work but I got it working after a while (Noobie in debian) maybe some other people are facing the same problem as I was.
to receive UDP DHCP packets on a dedicated interface, you have to use the undocumented option SO_BINDTODEVICE:
<?php
$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_set_option($socket, SOL_SOCKET, SO_BINDTODEVICE, 'eth1');
socket_set_option($socket, SOL_SOCKET, SO_BROADCAST, 1);
socket_set_option($socket, SOL_SOCKET, SO_REUSEADDR, 1);
socket_set_option($socket, SOL_SOCKET, SO_REUSEPORT, 1);
socket_bind($socket, '255.255.255.255', 67);
while (1) {
if ($src = @socket_recv($socket, $data, 9999, 0)) {
echo $data . PHP_EOL;
}
}
?>