/*

 * Copyright (c) 2016, 2017, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.IOException;

import java.lang.reflect.Field;

import java.net.*;

import java.util.ArrayList;

import java.util.List;

/*

 * @test

 * @bug 8143554 8044773

 * @summary Test checks that UnsupportedOperationException for unsupported

 * SOCKET_OPTIONS is thrown by both getOption() and setOption() methods.

 * @run main UnsupportedOptionsTest

 * @run main/othervm --limit-modules=java.base UnsupportedOptionsTest

 */

public class UnsupportedOptionsTest {

    private static final List<SocketOption<?>> socketOptions = new ArrayList<>();

    static {

        socketOptions.add(StandardSocketOptions.IP_MULTICAST_IF);

        socketOptions.add(StandardSocketOptions.IP_MULTICAST_LOOP);

        socketOptions.add(StandardSocketOptions.IP_MULTICAST_TTL);

        socketOptions.add(StandardSocketOptions.IP_TOS);

        socketOptions.add(StandardSocketOptions.SO_BROADCAST);

        socketOptions.add(StandardSocketOptions.SO_KEEPALIVE);

        socketOptions.add(StandardSocketOptions.SO_LINGER);

        socketOptions.add(StandardSocketOptions.SO_RCVBUF);

        socketOptions.add(StandardSocketOptions.SO_REUSEADDR);

        socketOptions.add(StandardSocketOptions.SO_SNDBUF);

        socketOptions.add(StandardSocketOptions.TCP_NODELAY);

        try {

            Class<?> c = Class.forName("jdk.net.ExtendedSocketOptions");

            Field field = c.getField("SO_FLOW_SLA");

            socketOptions.add((SocketOption<?>)field.get(null));

            field = c.getField("TCP_QUICKACK");

            socketOptions.add((SocketOption<?>)field.get(null));

        } catch (ClassNotFoundException e) {

            // ignore, jdk.net module not present

        } catch (ReflectiveOperationException e) {

            throw new AssertionError(e);

        }

    }

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

        Socket s = new Socket();

        ServerSocket ss = new ServerSocket();

        DatagramSocket ds = new DatagramSocket();

        MulticastSocket ms = new MulticastSocket();

        for (SocketOption option : socketOptions) {

            if (!s.supportedOptions().contains(option)) {

                testUnsupportedSocketOption(s, option);

            }

            if (!ss.supportedOptions().contains(option)) {

                testUnsupportedSocketOption(ss, option);

            }

            if (!ms.supportedOptions().contains(option)) {

                testUnsupportedSocketOption(ms, option);

            }

            if (!ds.supportedOptions().contains(option)) {

                testUnsupportedSocketOption(ds, option);

            }

        }

    }

    /*

     * Check that UnsupportedOperationException for unsupported option is

     * thrown from both getOption() and setOption() methods.

     */

    private static void testUnsupportedSocketOption(Object socket,

                                                    SocketOption option) {

        testSet(socket, option);

        testGet(socket, option);

    }

    private static void testSet(Object socket, SocketOption option) {

        try {

            setOption(socket, option);

        } catch (UnsupportedOperationException e) {

            System.out.println("UnsupportedOperationException was throw " +

                    "as expected. Socket: " + socket + " Option: " + option);

            return;

        } catch (Exception e) {

            throw new RuntimeException("FAIL. Unexpected exception.", e);

        }

        throw new RuntimeException("FAIL. UnsupportedOperationException " +

                "hasn't been thrown. Socket: " + socket + " Option: " + option);

    }

    private static void testGet(Object socket, SocketOption option) {

        try {

            getOption(socket, option);

        } catch (UnsupportedOperationException e) {

            System.out.println("UnsupportedOperationException was throw " +

                    "as expected. Socket: " + socket + " Option: " + option);

            return;

        } catch (Exception e) {

            throw new RuntimeException("FAIL. Unexpected exception.", e);

        }

        throw new RuntimeException("FAIL. UnsupportedOperationException " +

                "hasn't been thrown. Socket: " + socket + " Option: " + option);

    }

    private static void getOption(Object socket,

                                  SocketOption option) throws IOException {

        if (socket instanceof Socket) {

            ((Socket) socket).getOption(option);

        } else if (socket instanceof ServerSocket) {

            ((ServerSocket) socket).getOption(option);

        } else if (socket instanceof DatagramSocket) {

            ((DatagramSocket) socket).getOption(option);

        } else {

            throw new RuntimeException("Unsupported socket type");

        }

    }

    private static void setOption(Object socket,

                                  SocketOption option) throws IOException {

        if (socket instanceof Socket) {

            ((Socket) socket).setOption(option, null);

        } else if (socket instanceof ServerSocket) {

            ((ServerSocket) socket).setOption(option, null);

        } else if (socket instanceof DatagramSocket) {

            ((DatagramSocket) socket).setOption(option, null);

        } else {

            throw new RuntimeException("Unsupported socket type");

        }

    }

}