Java InetAddress Check isUDPPortFree(int port, InetAddress addr)

Description

is UDP Port Free

License

Open Source License

Declaration

public static boolean isUDPPortFree(int port, InetAddress addr) 

Method Source Code

//package com.java2s;
/*//from w  w w  .ja  v  a  2s.c o m
 * Copyright (c) 2015, Alachisoft. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.IOException;

import java.net.DatagramSocket;
import java.net.InetAddress;

public class Main {
    public static boolean isUDPPortFree(int port, InetAddress addr) {
        DatagramSocket ds = null;
        try {
            ds = new DatagramSocket(port, addr);
            //ds.setReuseAddress(true);
            return true;
        } catch (IOException io) {
        } finally {
            if (ds != null) {
                ds.close();
            }
        }
        return false;
    }
}

Related

1. isServerAlive(InetAddress host, int port)
2. isSiteLocalAddress(InetAddress i)
3. isTenDot(InetAddress adr)
4. isThisMyIpAddress(InetAddress addr)
5. isThisMyIpAddress(InetAddress addr)
6. isUnicastAddress(@CheckForNull InetAddress address)
7. isValidAddress(InetAddress address, int timeoutMs)
8. isValidAddress(InetAddress i, boolean includeLocalAddressesInNoderefs)
9. isValidAddress(InetAddress i, boolean includeLocalAddressesInNoderefs)