Edit report at https://bugs.php.net/bug.php?id=63000&edit=1

 ID:                 63000
 Comment by:         igor at wiedler dot ch
 Reported by:        igor at wiedler dot ch
 Summary:            MCAST_JOIN_GROUP on OSX is broken
 Status:             Open
 Type:               Bug
 Package:            Sockets related
 Operating System:   Mac OSX 10.7, 10.8
 PHP Version:        5.4.6
 Block user comment: N
 Private report:     N

 New Comment:

See also: http://trac.videolan.org/vlc/ticket/6104#comment:19


Previous Comments:
------------------------------------------------------------------------
[2012-09-02 21:38:36] igor at wiedler dot ch

Description:
------------
The multicast support in PHP 5.4 makes use of MCAST_JOIN_GROUP if it is 
present. 
The problem is that OSX 10.7 added the constant, but did not correctly 
implement 
the feature. This causes the setsockopt call to fail.

The solution to the problem is to not use MCAST_JOIN_GROUP on OSX.

Test script:
---------------
<?php
if (!extension_loaded('sockets')) {
    die('skip sockets extension not available.');
}
if (PHP_OS !== 'Darwin') {
    die('is not OSX.');
}

$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_bind($socket, '0.0.0.0', 31057);

$so = socket_set_option($socket, IPPROTO_IP, MCAST_JOIN_GROUP, array(
    "group" => '224.0.0.251',
    "interface" => 0,
));
var_dump($so);


Expected result:
----------------
bool(true)

Actual result:
--------------
PHP Warning:  socket_set_option(): unable to set socket option [22]: Invalid 
argument in /Users/igor/code/react-mdns-userland/src/React/Mdns/Client.php on 
line 27
PHP Stack trace:
PHP   1. {main}() /Users/igor/code/react-mdns-userland/examples/client.php:0
PHP   2. React\Mdns\Client->query() /Users/igor/code/react-mdns-
userland/examples/client.php:10
PHP   3. socket_set_option() /Users/igor/code/react-mdns-
userland/src/React/Mdns/Client.php:27

bool(false)


------------------------------------------------------------------------



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