3bc69d393d
Co-authored-by: Alan Bateman <alan.bateman@oracle.com> Co-authored-by: Alex Buckley <alex.buckley@oracle.com> Co-authored-by: Erik Joelsson <erik.joelsson@oracle.com> Co-authored-by: Jonathan Gibbons <jonathan.gibbons@oracle.com> Co-authored-by: Karen Kinnear <karen.kinnear@oracle.com> Co-authored-by: Magnus Ihse Bursie <magnus.ihse.bursie@oracle.com> Co-authored-by: Mandy Chung <mandy.chung@oracle.com> Co-authored-by: Mark Reinhold <mark.reinhold@oracle.com> Co-authored-by: Paul Sandoz <paul.sandoz@oracle.com> Reviewed-by: alanb, chegar, ihse, mduigou
109 lines
4.4 KiB
Java
109 lines
4.4 KiB
Java
/*
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* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.net;
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import java.io.IOException;
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/*
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* Package private implementation of InetAddressImpl for dual
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* IPv4/IPv6 stack.
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* <p>
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* If InetAddress.preferIPv6Address is true then anyLocalAddress(),
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* loopbackAddress(), and localHost() will return IPv6 addresses,
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* otherwise IPv4 addresses.
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*
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* @since 1.4
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*/
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class Inet6AddressImpl implements InetAddressImpl {
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public native String getLocalHostName() throws UnknownHostException;
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public native InetAddress[]
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lookupAllHostAddr(String hostname) throws UnknownHostException;
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public native String getHostByAddr(byte[] addr) throws UnknownHostException;
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private native boolean isReachable0(byte[] addr, int scope, int timeout, byte[] inf, int ttl, int if_scope) throws IOException;
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public boolean isReachable(InetAddress addr, int timeout, NetworkInterface netif, int ttl) throws IOException {
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byte[] ifaddr = null;
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int scope = -1;
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int netif_scope = -1;
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if (netif != null) {
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/*
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* Let's make sure we bind to an address of the proper family.
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* Which means same family as addr because at this point it could
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* be either an IPv6 address or an IPv4 address (case of a dual
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* stack system).
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*/
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java.util.Enumeration<InetAddress> it = netif.getInetAddresses();
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InetAddress inetaddr = null;
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while (it.hasMoreElements()) {
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inetaddr = it.nextElement();
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if (inetaddr.getClass().isInstance(addr)) {
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ifaddr = inetaddr.getAddress();
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if (inetaddr instanceof Inet6Address) {
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netif_scope = ((Inet6Address) inetaddr).getScopeId();
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}
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break;
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}
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}
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if (ifaddr == null) {
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// Interface doesn't support the address family of
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// the destination
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return false;
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}
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}
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if (addr instanceof Inet6Address)
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scope = ((Inet6Address) addr).getScopeId();
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return isReachable0(addr.getAddress(), scope, timeout, ifaddr, ttl, netif_scope);
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}
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public synchronized InetAddress anyLocalAddress() {
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if (anyLocalAddress == null) {
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if (InetAddress.preferIPv6Address) {
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anyLocalAddress = new Inet6Address();
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anyLocalAddress.holder().hostName = "::";
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} else {
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anyLocalAddress = (new Inet4AddressImpl()).anyLocalAddress();
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}
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}
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return anyLocalAddress;
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}
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public synchronized InetAddress loopbackAddress() {
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if (loopbackAddress == null) {
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if (InetAddress.preferIPv6Address) {
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byte[] loopback =
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
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loopbackAddress = new Inet6Address("localhost", loopback);
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} else {
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loopbackAddress = (new Inet4AddressImpl()).loopbackAddress();
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}
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}
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return loopbackAddress;
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}
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private InetAddress anyLocalAddress;
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private InetAddress loopbackAddress;
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}
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