ext/sockets: multicast on unsupported socket type error change.

From a mere warning to an exception.

close GH-19114

NEWS

@@ -14,6 +14,10 @@ PHP                                                                        NEWS
   . Fetch larger block sizes and better handle SQL_NO_TOTAL when calling
     SQLGetData. (Calvin Buckley, Saki Takamachi)
 
+- Sockets:
+  . socket_set_option for multicast context throws a ValueError
+    when the socket family is not of AF_INET/AF_INET6 family. (David Carlier)
+
 - Standard:
   . Optimized pack(). (nielsdos, divinity76)
   . Fixed bug GH-19070 (setlocale($type, NULL) should not be deprecated).

UPGRADING

@@ -371,6 +371,8 @@ PHP 8.5 UPGRADE NOTES
   . socket_create/socket_bind can create AF_PACKET family sockets.
   . socket_getsockname gets the interface index and its string
     representation with AF_PACKET socket.
+  . socket_set_option with multicast context throws a ValueError
+    when the created socket is not of AF_INET/AF_INET6 family.
 
 - Tidy:
   . tidy::__construct/parseFile/parseString now throws a ValueError

ext/sockets/sockaddr_conv.c

@@ -137,8 +137,7 @@ int php_set_inet46_addr(php_sockaddr_storage *ss, socklen_t *ss_len, zend_string
 	}
 #endif
 	else {
-		php_error_docref(NULL, E_WARNING,
-			"IP address used in the context of an unexpected type of socket");
+		zend_value_error("IP address used in the context of an unexpected type of socket");
 	}
 	return 0;
 }

ext/sockets/tests/mcast_sockettype_error.phpt

@@ -0,0 +1,30 @@
+--TEST--
+Multicast attempt on unsupported socket type
+--EXTENSIONS--
+sockets
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die('skip Not for Windows!');
+}
+?>
+--FILE--
+<?php
+$sock_path = sprintf("/tmp/%s.sock", uniqid());
+
+if (file_exists($sock_path))
+	die('Temporary socket already exists.');
+$sock = socket_create(AF_UNIX, SOCK_DGRAM, 0);
+socket_bind($sock, $sock_path);
+
+try {
+    socket_set_option($sock, IPPROTO_IP, MCAST_JOIN_GROUP, array(
+        "group"	=> '127.0.0.1',
+        "interface" => "lo",
+    ));
+} catch (\ValueError $e) {
+	echo $e->getMessage(), PHP_EOL;
+}
+?>
+--EXPECT--
+IP address used in the context of an unexpected type of socket