/*

 * Copyright (c) 2013, 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 sun.net;

import java.security.AccessController;

/**

 * Determines the ephemeral port range in use on this system.

 * If this cannot be determined, then the default settings

 * of the OS are returned.

 */

public final class PortConfig {

    private static int defaultUpper, defaultLower;

    static {

        AccessController.doPrivileged(

            new java.security.PrivilegedAction<Void>() {

                public Void run() {

                    System.loadLibrary("net");

                    return null;

                }

            });

        int v = getLower0();

        if (v == -1) {

            v = defaultLower;

        }

        lower = v;

        v = getUpper0();

        if (v == -1) {

            v = defaultUpper;

        }

        upper = v;

    }

    static native int getLower0();

    static native int getUpper0();

    public static int getLower() {

        return lower;

    }

    public static int getUpper() {

        return upper;

    }

}