125 lines
5.2 KiB
Java
125 lines
5.2 KiB
Java
/*
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* Copyright (c) 2016, 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.
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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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/**
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* @test
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* @bug 8016521
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* @library /test/lib
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* @summary InetAddress should not always re-order addresses returned from name
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* service
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* @run main/othervm -Djava.net.preferIPv6Addresses=false PreferIPv6AddressesTest
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* @run main/othervm -Djava.net.preferIPv6Addresses=true PreferIPv6AddressesTest
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* @run main/othervm -Djava.net.preferIPv6Addresses=system PreferIPv6AddressesTest
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* @run main/othervm PreferIPv6AddressesTest
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*/
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import java.io.IOException;
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import java.net.*;
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import java.nio.channels.DatagramChannel;
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import java.util.Arrays;
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import java.util.stream.IntStream;
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import static java.lang.System.out;
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import jdk.test.lib.net.IPSupport;
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public class PreferIPv6AddressesTest {
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// A name, that if resolves, returns both IPv4 and IPv6 addresses.
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static final String HOST_NAME = "www.google.com";
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static final InetAddress LOOPBACK = InetAddress.getLoopbackAddress();
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static final String preferIPV6Address =
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System.getProperty("java.net.preferIPv6Addresses", "false");
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public static void main(String args[]) throws IOException {
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InetAddress addrs[];
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try {
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addrs = InetAddress.getAllByName(HOST_NAME);
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} catch (UnknownHostException e) {
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out.println("Unknown host " + HOST_NAME + ", cannot run test.");
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return;
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}
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int firstIPv4Address = IntStream.range(0, addrs.length)
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.filter(x -> addrs[x] instanceof Inet4Address)
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.findFirst().orElse(-1);
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int firstIPv6Address = IntStream.range(0, addrs.length)
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.filter(x -> addrs[x] instanceof Inet6Address)
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.findFirst().orElse(-1);
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out.println("IPv6 supported: " + IPSupport.hasIPv6());
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out.println("Addresses: " + Arrays.asList(addrs));
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if (preferIPV6Address.equalsIgnoreCase("true") && firstIPv6Address != -1) {
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int off = firstIPv4Address != -1 ? firstIPv4Address : addrs.length;
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assertAllv6Addresses(addrs, 0, off);
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assertAllv4Addresses(addrs, off, addrs.length);
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assertLoopbackAddress(Inet6Address.class);
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assertAnyLocalAddress(Inet6Address.class);
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} else if (preferIPV6Address.equalsIgnoreCase("false") && firstIPv4Address != -1) {
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int off = firstIPv6Address != -1 ? firstIPv6Address : addrs.length;
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assertAllv4Addresses(addrs, 0, off);
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assertAllv6Addresses(addrs, off, addrs.length);
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assertLoopbackAddress(Inet4Address.class);
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assertAnyLocalAddress(Inet4Address.class);
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} else if (preferIPV6Address.equalsIgnoreCase("system") && IPSupport.hasIPv6()) {
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assertLoopbackAddress(Inet6Address.class);
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assertAnyLocalAddress(Inet6Address.class);
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} else if (preferIPV6Address.equalsIgnoreCase("system") && !IPSupport.hasIPv6()) {
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assertLoopbackAddress(Inet4Address.class);
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assertAnyLocalAddress(Inet4Address.class);
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}
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}
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static void assertAllv4Addresses(InetAddress[] addrs, int off, int len) {
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IntStream.range(off, len)
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.mapToObj(x -> addrs[x])
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.forEach(x -> {
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if (!(x instanceof Inet4Address))
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throw new RuntimeException("Expected IPv4, got " + x);
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});
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}
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static void assertAllv6Addresses(InetAddress[] addrs, int off, int len) {
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IntStream.range(off, len)
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.mapToObj(x -> addrs[x])
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.forEach(x -> {
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if (!(x instanceof Inet6Address))
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throw new RuntimeException("Expected IPv6, got " + x);
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});
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}
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static void assertLoopbackAddress(Class<?> expectedType) {
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if (!LOOPBACK.getClass().isAssignableFrom(expectedType))
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throw new RuntimeException("Expected " + expectedType
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+ ", got " + LOOPBACK.getClass());
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}
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static void assertAnyLocalAddress(Class<?> expectedType) {
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InetAddress anyAddr = (new InetSocketAddress(0)).getAddress();
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if (!anyAddr.getClass().isAssignableFrom(expectedType))
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throw new RuntimeException("Expected " + expectedType
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+ ", got " + anyAddr.getClass());
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}
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}
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