Bug #49341: Add SO_REUSEPORT support for socket_set_option()

This is a BSD-only feature, and it will only be available on BSD.
On other platforms the constant will simply not be set.

Author: igorw

ext/sockets/sockets.c

@@ -788,6 +788,9 @@ PHP_MINIT_FUNCTION(sockets)
 #endif
 	REGISTER_LONG_CONSTANT("SO_DEBUG",		SO_DEBUG,		CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("SO_REUSEADDR",	SO_REUSEADDR,	CONST_CS | CONST_PERSISTENT);
+#ifdef SO_REUSEPORT
+	REGISTER_LONG_CONSTANT("SO_REUSEPORT",	SO_REUSEPORT,	CONST_CS | CONST_PERSISTENT);
+#endif
 	REGISTER_LONG_CONSTANT("SO_KEEPALIVE",	SO_KEEPALIVE,	CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("SO_DONTROUTE",	SO_DONTROUTE,	CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("SO_LINGER",		SO_LINGER,		CONST_CS | CONST_PERSISTENT);

ext/sockets/tests/bug49341.phpt

@@ -0,0 +1,15 @@
+--TEST--
+Bug #49341: add SO_REUSEPORT support for socket_set_option()
+--SKIPIF--
+<?php
+if (!extension_loaded('sockets')) {
+    die('skip sockets extension not available.');
+}
+if (PHP_OS !== 'Darwin' && false === strpos(PHP_OS, 'BSD')) {
+    die('is not *BSD.');
+}
+--FILE--
+<?php
+var_dump(defined('SO_REUSEPORT'));
+--EXPECTF--
+bool(true)