Java InetAddress Check createRandomSocketAddressList( InetAddress bindAddress, int preferredPort, int minPort, int maxPort)

Description

create Random Socket Address List

License

Open Source License

Declaration

public static List<InetSocketAddress> createRandomSocketAddressList(
            InetAddress bindAddress, int preferredPort, int minPort,
            int maxPort) 

Method Source Code

//package com.java2s;
/*//w  w w. j a  v a2  s .  co  m
 * Copyright (c) 2001-2007 Sun Microsystems, Inc.  All rights reserved.
 *
 *  The Sun Project JXTA(TM) Software License
 *
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice, 
 *     this list of conditions and the following disclaimer in the documentation 
 *     and/or other materials provided with the distribution.
 *
 *  3. The end-user documentation included with the redistribution, if any, must 
 *     include the following acknowledgment: "This product includes software 
 *     developed by Sun Microsystems, Inc. for JXTA(TM) technology." 
 *     Alternately, this acknowledgment may appear in the software itself, if 
 *     and wherever such third-party acknowledgments normally appear.
 *
 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must 
 *     not be used to endorse or promote products derived from this software 
 *     without prior written permission. For written permission, please contact 
 *     Project JXTA at http://www.jxta.org.
 *
 *  5. Products derived from this software may not be called "JXTA", nor may 
 *     "JXTA" appear in their name, without prior written permission of Sun.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 *  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 
 *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SUN 
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 *  <http://www.jxta.org/project/www/license.html> for instructions on use of 
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 *  This software consists of voluntary contributions made by many individuals 
 *  on behalf of Project JXTA. For more information on Project JXTA, please see 
 *  http://www.jxta.org.
 *
 *  This license is based on the BSD license adopted by the Apache Foundation. 
 */

import java.net.InetAddress;
import java.net.InetSocketAddress;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

public class Main {
    public static List<InetSocketAddress> createRandomSocketAddressList(
            InetAddress bindAddress, int preferredPort, int minPort,
            int maxPort) {

        if (minPort < 1 || minPort > 65535) {
            throw new IllegalArgumentException(
                    "Minimum port is outside legal range (1-65535). min="
                            + minPort);
        }

        if (maxPort < minPort) {
            throw new IllegalArgumentException(
                    "Maximum port is less than minimum port. max="
                            + maxPort + ", min=" + minPort);
        }

        if (maxPort > 65535) {
            throw new IllegalArgumentException(
                    "Maximum port is outside legal range (1-65535). max="
                            + maxPort);
        }

        ArrayList<InetSocketAddress> addresses = new ArrayList<InetSocketAddress>(
                maxPort - minPort);
        addresses.add(new InetSocketAddress(bindAddress, preferredPort));
        for (int port = minPort; port < maxPort; port++) {
            if (port == preferredPort) {
                continue;
            }

            addresses.add(new InetSocketAddress(bindAddress, port));
        }

        Collections.shuffle(addresses.subList(1, addresses.size()));
        return addresses;
    }
}

Related

1. arrayToList(final InetAddress[] addresses)
2. canTcpListen(InetAddress address, int port)
3. checkIPMatch(String ipTemplateList, InetAddress addr)
4. formatAddresses( List addresses)
5. getInetAddressList(NetworkInterface netInterface)
6. is6to4(InetAddress addr)
7. isAddressReachable(InetAddress address)