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/*
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* Copyright (c) 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 6521014 6543428
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* @summary IOException thrown when Socket tries to bind to an local IPv6 address on SuSE Linux
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*/
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import java.net.*;
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import java.io.*;
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import java.util.*;
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/*
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*
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* What this testcase is to test is a (weird) coupling through the
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* cached_scope_id field of java.net.Inet6Address. Native method
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* NET_InetAddressToSockaddr as in Linux platform will try to write
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* and read this field, therefore Inet6Address becomes 'stateful'.
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* So the coupling. Certain executive order, e.g. two methods use
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* the same Inet6Address instance as illustrated in this test case,
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* will show side effect of such coupling.
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*
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* And on Windows, NET_InetAddressToSockaddr() did not assign appropriate
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* sin6_scope_id value to sockaddr_in6 structure if there's no one coming
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* with Inet6Address instance, which caused bind exception. This test use
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* link-local address without %scope suffix, so it is also going to test
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* that.
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*
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*/
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public class B6521014 {
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static InetAddress sin;
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static Inet6Address getLocalAddr () throws Exception {
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Enumeration e = NetworkInterface.getNetworkInterfaces();
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while (e.hasMoreElements()) {
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NetworkInterface ifc = (NetworkInterface) e.nextElement();
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Enumeration addrs = ifc.getInetAddresses();
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while (addrs.hasMoreElements()) {
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InetAddress a = (InetAddress)addrs.nextElement();
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if (a instanceof Inet6Address) {
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Inet6Address ia6 = (Inet6Address) a;
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if (ia6.isLinkLocalAddress()) {
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// remove %scope suffix
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return (Inet6Address)InetAddress.getByAddress(ia6.getAddress());
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}
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}
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}
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}
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return null;
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}
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static void test1() throws Exception {
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ServerSocket ssock;
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Socket sock;
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int port;
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ssock = new ServerSocket(0);
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port = ssock.getLocalPort();
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sock = new Socket();
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try {
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sock.connect(new InetSocketAddress(sin, port), 100);
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} catch (SocketTimeoutException e) {
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// time out exception is okay
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System.out.println("timed out when connecting.");
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}
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}
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static void test2() throws Exception {
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Socket sock;
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ServerSocket ssock;
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int port;
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int localport;
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ssock = new ServerSocket(0);
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ssock.setSoTimeout(100);
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port = ssock.getLocalPort();
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localport = port + 1;
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sock = new Socket();
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sock.bind(new InetSocketAddress(sin, localport));
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try {
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sock.connect(new InetSocketAddress(sin, port), 100);
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} catch (SocketTimeoutException e) {
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// time out exception is okay
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System.out.println("timed out when connecting.");
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}
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}
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public static void main(String[] args) throws Exception {
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sin = getLocalAddr();
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if (sin == null) {
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System.out.println("Cannot find a link-local address.");
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return;
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}
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try {
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test1();
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test2();
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} catch (IOException e) {
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throw new RuntimeException("Test failed: cannot create socket.", e);
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}
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}
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}
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