/*

 * Copyright (c) 2014, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 */

package java.net;

import java.io.IOException;

class SocketSecrets {

    /* accessed by reflection from jdk.net.Sockets */

    /* obj must be a Socket or ServerSocket */

    private static <T> void setOption(Object obj, SocketOption<T> name, T value) throws IOException {

        SocketImpl impl;

        if (obj instanceof Socket) {

            impl = ((Socket)obj).getImpl();

        } else if (obj instanceof ServerSocket) {

            impl = ((ServerSocket)obj).getImpl();

        } else {

            throw new IllegalArgumentException();

        }

        impl.setOption(name, value);

    }

    private static <T> T getOption(Object obj, SocketOption<T> name) throws IOException {

        SocketImpl impl;

        if (obj instanceof Socket) {

            impl = ((Socket)obj).getImpl();

        } else if (obj instanceof ServerSocket) {

            impl = ((ServerSocket)obj).getImpl();

        } else {

            throw new IllegalArgumentException();

        }

        return impl.getOption(name);

    }

    private static <T> void setOption(DatagramSocket s, SocketOption<T> name, T value) throws IOException {

        s.getImpl().setOption(name, value);

    }

    private static <T> T getOption(DatagramSocket s, SocketOption<T> name) throws IOException {

        return s.getImpl().getOption(name);

    }

}