/*

 * Copyright (c) 2007, 2019, 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;

import java.util.Set;

import java.util.HashSet;

import sun.net.ext.ExtendedSocketOptions;

/*

 * On Unix systems we simply delegate to native methods.

 *

 * @author Chris Hegarty

 */

class PlainDatagramSocketImpl extends AbstractPlainDatagramSocketImpl

{

    static {

        init();

    }

    protected void socketSetOption(int opt, Object val) throws SocketException {

        if (opt == SocketOptions.SO_REUSEPORT &&

            !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) {

            throw new UnsupportedOperationException("unsupported option");

        }

        try {

            socketSetOption0(opt, val);

        } catch (SocketException se) {

            if (!connected)

                throw se;

        }

    }

    protected synchronized native void bind0(int lport, InetAddress laddr)

        throws SocketException;

    protected native void send0(DatagramPacket p) throws IOException;

    protected synchronized native int peek(InetAddress i) throws IOException;

    protected synchronized native int peekData(DatagramPacket p) throws IOException;

    protected synchronized native void receive0(DatagramPacket p)

        throws IOException;

    protected native void setTimeToLive(int ttl) throws IOException;

    protected native int getTimeToLive() throws IOException;

    @Deprecated

    protected native void setTTL(byte ttl) throws IOException;

    @Deprecated

    protected native byte getTTL() throws IOException;

    protected native void join(InetAddress inetaddr, NetworkInterface netIf)

        throws IOException;

    protected native void leave(InetAddress inetaddr, NetworkInterface netIf)

        throws IOException;

    protected native void datagramSocketCreate() throws SocketException;

    protected native void datagramSocketClose();

    protected native void socketSetOption0(int opt, Object val)

        throws SocketException;

    protected native Object socketGetOption(int opt) throws SocketException;

    protected native void connect0(InetAddress address, int port) throws SocketException;

    protected native void disconnect0(int family);

    native int dataAvailable();

    /**

     * Perform class load-time initializations.

     */

    private static native void init();

}