--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/net/Inet6AddressImpl.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2002, 2016, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+package java.net;
+
+import java.io.IOException;
+import static java.net.InetAddress.PREFER_IPV6_VALUE;
+import static java.net.InetAddress.PREFER_SYSTEM_VALUE;
+
+/*
+ * Package private implementation of InetAddressImpl for dual
+ * IPv4/IPv6 stack.
+ * <p>
+ * If InetAddress.preferIPv6Address is true then anyLocalAddress(),
+ * loopbackAddress(), and localHost() will return IPv6 addresses,
+ * otherwise IPv4 addresses.
+ *
+ * @since 1.4
+ */
+class Inet6AddressImpl implements InetAddressImpl {
+
+ public native String getLocalHostName() throws UnknownHostException;
+
+ public native InetAddress[] lookupAllHostAddr(String hostname)
+ throws UnknownHostException;
+
+ public native String getHostByAddr(byte[] addr) throws UnknownHostException;
+
+ private native boolean isReachable0(byte[] addr, int scope, int timeout,
+ byte[] inf, int ttl, int if_scope)
+ throws IOException;
+
+ public boolean isReachable(InetAddress addr, int timeout,
+ NetworkInterface netif, int ttl)
+ throws IOException
+ {
+ byte[] ifaddr = null;
+ int scope = -1;
+ int netif_scope = -1;
+ if (netif != null) {
+ /*
+ * Let's make sure we bind to an address of the proper family.
+ * Which means same family as addr because at this point it could
+ * be either an IPv6 address or an IPv4 address (case of a dual
+ * stack system).
+ */
+ java.util.Enumeration<InetAddress> it = netif.getInetAddresses();
+ InetAddress inetaddr = null;
+ while (it.hasMoreElements()) {
+ inetaddr = it.nextElement();
+ if (inetaddr.getClass().isInstance(addr)) {
+ ifaddr = inetaddr.getAddress();
+ if (inetaddr instanceof Inet6Address) {
+ netif_scope = ((Inet6Address) inetaddr).getScopeId();
+ }
+ break;
+ }
+ }
+ if (ifaddr == null) {
+ // Interface doesn't support the address family of
+ // the destination
+ return false;
+ }
+ }
+ if (addr instanceof Inet6Address)
+ scope = ((Inet6Address) addr).getScopeId();
+ return isReachable0(addr.getAddress(), scope, timeout, ifaddr, ttl, netif_scope);
+ }
+
+ public synchronized InetAddress anyLocalAddress() {
+ if (anyLocalAddress == null) {
+ if (InetAddress.preferIPv6Address == PREFER_IPV6_VALUE ||
+ InetAddress.preferIPv6Address == PREFER_SYSTEM_VALUE) {
+ anyLocalAddress = new Inet6Address();
+ anyLocalAddress.holder().hostName = "::";
+ } else {
+ anyLocalAddress = (new Inet4AddressImpl()).anyLocalAddress();
+ }
+ }
+ return anyLocalAddress;
+ }
+
+ public synchronized InetAddress loopbackAddress() {
+ if (loopbackAddress == null) {
+ if (InetAddress.preferIPv6Address == PREFER_IPV6_VALUE ||
+ InetAddress.preferIPv6Address == PREFER_SYSTEM_VALUE) {
+ byte[] loopback =
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
+ loopbackAddress = new Inet6Address("localhost", loopback);
+ } else {
+ loopbackAddress = (new Inet4AddressImpl()).loopbackAddress();
+ }
+ }
+ return loopbackAddress;
+ }
+
+ private InetAddress anyLocalAddress;
+ private InetAddress loopbackAddress;
+}