2362N/A * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved. 524N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 524N/A * This code is free software; you can redistribute it and/or modify it 524N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 524N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 524N/A * This code is distributed in the hope that it will be useful, but WITHOUT 524N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 524N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 524N/A * version 2 for more details (a copy is included in the LICENSE file that 524N/A * accompanied this code). 524N/A * You should have received a copy of the GNU General Public License version 524N/A * 2 along with this work; if not, write to the Free Software Foundation, 524N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 524N/A * Simple registry of membership keys for a MulticastChannel. 524N/A * Instances of this object are not safe by multiple concurrent threads. 524N/A // map multicast group to keys 524N/A * Checks registry for membership of the group on the given 524N/A // already a member to receive all packets so return 524N/A // existing key or detect conflict 524N/A // already have source-specific membership so return key 524N/A * Add membership to the registry, returning a new membership key. 524N/A * Remove a key from the registry 524N/A * Invalidate all keys in the registry