test/jdk/java/net/DatagramSocket/ImplicitBind.java

/*
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 * 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.
 *
 * 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.
 *
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 */

/*
 * @test
 * @bug 4500266
 * @summary DatagramSocket.isBound reports 'false' when socket implicitly bound
 */

import java.net.*;

public class ImplicitBind {
    public static void main(String[] args) throws Exception {
        DatagramSocket s = new DatagramSocket((SocketAddress)null);
        byte b[] = "hello".getBytes();
        InetAddress ia = InetAddress.getByName("localhost");
        DatagramPacket pac = new DatagramPacket(b, b.length, ia, 53);
        s.send(pac);
        if (!s.isBound())
            throw new RuntimeException("Socket should be implictly bound!");
        s.close();
        s = new DatagramSocket((SocketAddress)null);
        s.connect(new InetSocketAddress("localhost", 1234));
        if (!s.isBound())
            throw new RuntimeException("Socket should be implictly bound!");
        s.close();
    }
}