| /* |
| * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.net.*; |
| import java.util.*; |
| import java.io.IOException; |
| |
| /** |
| * Helper class for multicasting tests. |
| */ |
| |
| class NetworkConfiguration { |
| |
| private Map<NetworkInterface,List<InetAddress>> ip4Interfaces; |
| private Map<NetworkInterface,List<InetAddress>> ip6Interfaces; |
| |
| private NetworkConfiguration(Map<NetworkInterface,List<InetAddress>> ip4Interfaces, |
| Map<NetworkInterface,List<InetAddress>> ip6Interfaces) |
| { |
| this.ip4Interfaces = ip4Interfaces; |
| this.ip6Interfaces = ip6Interfaces; |
| } |
| |
| Iterable<NetworkInterface> ip4Interfaces() { |
| return ip4Interfaces.keySet(); |
| } |
| |
| Iterable<NetworkInterface> ip6Interfaces() { |
| return ip6Interfaces.keySet(); |
| } |
| |
| Iterable<InetAddress> ip4Addresses(NetworkInterface nif) { |
| return ip4Interfaces.get(nif); |
| } |
| |
| Iterable<InetAddress> ip6Addresses(NetworkInterface nif) { |
| return ip6Interfaces.get(nif); |
| } |
| |
| static NetworkConfiguration probe() throws IOException { |
| Map<NetworkInterface,List<InetAddress>> ip4Interfaces = |
| new HashMap<NetworkInterface,List<InetAddress>>(); |
| Map<NetworkInterface,List<InetAddress>> ip6Interfaces = |
| new HashMap<NetworkInterface,List<InetAddress>>(); |
| |
| // find the interfaces that support IPv4 and IPv6 |
| List<NetworkInterface> nifs = Collections |
| .list(NetworkInterface.getNetworkInterfaces()); |
| for (NetworkInterface nif: nifs) { |
| // ignore intertaces that are down or don't support multicast |
| if (!nif.isUp() || !nif.supportsMulticast() || nif.isLoopback()) |
| continue; |
| |
| List<InetAddress> addrs = Collections.list(nif.getInetAddresses()); |
| for (InetAddress addr: addrs) { |
| if (!addr.isAnyLocalAddress()) { |
| if (addr instanceof Inet4Address) { |
| List<InetAddress> list = ip4Interfaces.get(nif); |
| if (list == null) { |
| list = new LinkedList<InetAddress>(); |
| } |
| list.add(addr); |
| ip4Interfaces.put(nif, list); |
| } else if (addr instanceof Inet6Address) { |
| List<InetAddress> list = ip6Interfaces.get(nif); |
| if (list == null) { |
| list = new LinkedList<InetAddress>(); |
| } |
| list.add(addr); |
| ip6Interfaces.put(nif, list); |
| } |
| } |
| } |
| } |
| return new NetworkConfiguration(ip4Interfaces, ip6Interfaces); |
| } |
| } |