/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License.
*/ package org.apache.catalina.tribes.util;
privatestaticfinal Log log = LogFactory.getLog(Jre14Compat.class); privatestaticfinal StringManager sm = StringManager.getManager(Jre14Compat.class);
privatestaticfinalboolean supported;
static { // Don't need any Java 19 specific classes (yet) so just test for one of // the new ones for now. Class<?> c1 = null; try {
c1 = Class.forName("java.io.Serial");
} catch (ClassNotFoundException cnfe) { // Must be pre-Java 16
log.debug(sm.getString("jre14Compat.javaPre14"), cnfe);
}
supported = (c1 != null);
}
staticboolean isSupported() { return supported;
}
@Override publicvoid setSocketoptionIpMulticastLoop(MulticastSocket socket, boolean enabled) throws IOException { /* * Java < 14, a value of true means loopback is disabled. Java 14+ a value of true means loopback is enabled.
*/
socket.setOption(StandardSocketOptions.IP_MULTICAST_LOOP, Boolean.valueOf(enabled));
}
}
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