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

From a mere warning to an exception.

Author: devnexen

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_type_error("IP address used in the context of an unexpected type of socket");
 	}
 	return 0;
 }

ext/sockets/tests/mcast_sockettype_error.phpt

@@ -0,0 +1,20 @@
+--TEST--
+Multicast attempt on unsupported socket type
+--EXTENSIONS--
+sockets
+--FILE--
+<?php
+$sock = socket_create(AF_UNIX, SOCK_DGRAM, 0);
+socket_bind($sock, '0.0.0.0', 0);
+
+try {
+    socket_set_option($sock, IPPROTO_IP, MCAST_JOIN_GROUP, array(
+        "group"	=> '127.0.0.1',
+        "interface" => "lo",
+    ));
+} catch (\TypeError $e) {
+	echo $e->getMessage(), PHP_EOL;
+}
+?>
+--EXPECT--
+IP address used in the context of an unexpected type of socket