/*

 * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.

 * 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.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/* @test

 * @bug 4640544

 * @summary Unit test for setOption/getOption/options methods

 */

import java.nio.*;

import java.nio.channels.*;

import java.net.*;

import java.io.IOException;

import java.util.*;

import static java.net.StandardSocketOption.*;

public class SocketOptionTests {

    static <T> void checkOption(DatagramChannel dc,

                                SocketOption<T> name,

                                T expectedValue)

        throws IOException

    {

        T value = dc.getOption(name);

        if (!value.equals(expectedValue))

            throw new RuntimeException("value not as expected");

    }

    public static void main(String[] args) throws IOException {

        DatagramChannel dc = DatagramChannel.open();

        // check supported options

        Set<SocketOption<?>> options = dc.options();

        List<? extends SocketOption<?>> expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,

            SO_REUSEADDR, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, IP_MULTICAST_TTL,

            IP_MULTICAST_LOOP);

        for (SocketOption opt: expected) {

            if (!options.contains(opt))

                throw new RuntimeException(opt.name() + " should be supported");

        }

        // check specified defaults

        checkOption(dc, SO_BROADCAST, false);

        checkOption(dc, IP_MULTICAST_TTL, 1);           // true on supported platforms

        checkOption(dc, IP_MULTICAST_LOOP, true);       // true on supported platforms

        // allowed to change when not bound

        dc.setOption(SO_BROADCAST, true);

        checkOption(dc, SO_BROADCAST, true);

        dc.setOption(SO_BROADCAST, false);

        checkOption(dc, SO_BROADCAST, false);

        dc.setOption(SO_SNDBUF, 16*1024);       // can't check

        dc.setOption(SO_RCVBUF, 16*1024);       // can't check

        dc.setOption(SO_REUSEADDR, true);

        checkOption(dc, SO_REUSEADDR, true);

        dc.setOption(SO_REUSEADDR, false);

        checkOption(dc, SO_REUSEADDR, false);

        // bind socket

        dc.bind(new InetSocketAddress(0));

        // allow to change when bound

        dc.setOption(SO_BROADCAST, true);

        checkOption(dc, SO_BROADCAST, true);

        dc.setOption(SO_BROADCAST, false);

        checkOption(dc, SO_BROADCAST, false);

        dc.setOption(IP_TOS, 0x08);     // can't check

        dc.setOption(IP_MULTICAST_TTL, 2);

        checkOption(dc, IP_MULTICAST_TTL, 2);

        dc.setOption(IP_MULTICAST_LOOP, false);

        checkOption(dc, IP_MULTICAST_LOOP, false);

        dc.setOption(IP_MULTICAST_LOOP, true);

        checkOption(dc, IP_MULTICAST_LOOP, true);

        // NullPointerException

        try {

            dc.setOption(null, "value");

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException x) {

        }

        try {

            dc.getOption(null);

            throw new RuntimeException("NullPointerException not thrown");

        } catch (NullPointerException x) {

        }

        // ClosedChannelException

        dc.close();

        try {

            dc.setOption(IP_MULTICAST_LOOP, true);

            throw new RuntimeException("ClosedChannelException not thrown");

        } catch (ClosedChannelException x) {

        }

    }

}