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/*
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* Copyright (c) 2006, 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 6411513
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* @summary java.net.DatagramSocket.receive: packet isn't received
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*/
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import java.net.*;
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import java.nio.ByteBuffer;
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import java.nio.channels.DatagramChannel;
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import java.util.*;
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import static java.lang.System.out;
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2
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public class B6411513 {
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public static void main( String[] args ) throws Exception {
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Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
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while (nics.hasMoreElements()) {
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NetworkInterface nic = nics.nextElement();
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if (nic.isUp() && !nic.isVirtual()) {
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Enumeration<InetAddress> addrs = nic.getInetAddresses();
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while (addrs.hasMoreElements()) {
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InetAddress addr = addrs.nextElement();
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// Currently, seems there's a bug on Linux that one is
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// unable to get IPv6 datagrams to be received by an
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// IPv6 socket bound to any address except ::1. So filter
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// out IPv6 address here. The test should be revisited
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// later when aforementioned bug gets fixed.
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if (addr instanceof Inet4Address) {
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out.printf("%s : %s\n", nic.getName(), addr);
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testConnectedUDP(addr);
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}
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}
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}
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}
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}
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/*
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* Connect a UDP socket, disconnect it, then send and recv on it.
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* It will fail on Linux if we don't silently bind(2) again at the
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* end of DatagramSocket.disconnect().
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*/
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private static void testConnectedUDP(InetAddress addr) throws Exception {
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try {
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DatagramSocket s = new DatagramSocket(0, addr);
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DatagramSocket ss = new DatagramSocket(0, addr);
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out.println("localaddress: " + s.getLocalSocketAddress());
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out.println("\tconnect...");
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s.connect(ss.getLocalAddress(), ss.getLocalPort());
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out.println("localaddress: " + s.getLocalSocketAddress());
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out.println("disconnect...");
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s.disconnect();
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out.println("localaddress: " + s.getLocalSocketAddress());
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byte[] data = { 0, 1, 2 };
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DatagramPacket p = new DatagramPacket(data, data.length,
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s.getLocalAddress(), s.getLocalPort());
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s.setSoTimeout( 10000 );
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out.print("send...");
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s.send( p );
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out.print("recv...");
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s.receive( p );
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out.println("OK");
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ss.close();
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s.close();
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} catch( Exception e ){
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e.printStackTrace();
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throw e;
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}
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}
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// Tests with DatagramChannel
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// private static void testConnectedUDPNIO(InetAddress addr) throws Exception {
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// DatagramChannel s = DatagramChannel.open();
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// s.bind(new InetSocketAddress(addr, 0));
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// DatagramChannel ss = DatagramChannel.open();
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// ss.bind(new InetSocketAddress(addr, 0));
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// out.println("localaddress: " + s.getLocalAddress());
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// out.println("\tconnect...");
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// s.connect(ss.getLocalAddress());
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// out.println("localaddress: " + s.getLocalAddress());
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// out.println("disconnect...");
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// s.disconnect();
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// out.println("localaddress: " + s.getLocalAddress());
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//
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// byte[] data = {0, 1, 2};
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// out.print("send...");
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// s.send(ByteBuffer.wrap(data), s.getLocalAddress());
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// out.print("recv...");
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// s.receive(ByteBuffer.allocate(100));
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// out.println("OK");
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//
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// ss.close();
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// s.close();
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// }
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}
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