/*

 * Copyright (c) 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/**

 * @test

 * @requires (os.family == "linux" | os.family == "mac" | os.family == "windows")

 * @bug 8209152

 * @run main PrintSupportedOptions

 * @run main/othervm -Djava.net.preferIPv4Stack=true PrintSupportedOptions

 */

import java.io.IOException;

import java.net.SocketOption;

import java.nio.channels.*;

public class PrintSupportedOptions {

    @FunctionalInterface

    interface NetworkChannelSupplier<T extends NetworkChannel> {

        T get() throws IOException;

    }

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

        test(() -> SocketChannel.open());

        test(() -> ServerSocketChannel.open());

        test(() -> DatagramChannel.open());

        test(() -> AsynchronousSocketChannel.open());

        test(() -> AsynchronousServerSocketChannel.open());

    }

    @SuppressWarnings("unchecked")

    static <T extends NetworkChannel>

    void test(NetworkChannelSupplier<T> supplier) throws IOException {

        try (T ch = supplier.get()) {

            System.out.println(ch);

            for (SocketOption<?> opt : ch.supportedOptions()) {

                Object value = ch.getOption(opt);

                System.out.format(" %s -> %s%n", opt.name(), value);

                if (value != null) {

                    ch.setOption((SocketOption<Object>) opt, value);

                }

            }

        }

    }

}