Java Broadcast Address Get getBroadcastAddress()

Description

Find broadcast address for multicast gossip implementations

License

Apache License

Exception

Parameter	Description
SocketException	an exception

Declaration

public static InetAddress getBroadcastAddress() throws SocketException 

Method Source Code

//package com.java2s;
/**/*  w  w w . jav a2 s  .co m*/
 * Copyright 2015 Ambud Sharma
 * 
 * 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.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class Main {
    /**
     * Find broadcast address for multicast gossip implementations
     * @return
     * @throws SocketException
     */
    public static InetAddress getBroadcastAddress() throws SocketException {
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            NetworkInterface networkInterface = interfaces.nextElement();
            if (networkInterface.isLoopback() || !networkInterface.supportsMulticast()) {
                continue;
            }
            for (InterfaceAddress interfaceAddress : networkInterface.getInterfaceAddresses()) {
                InetAddress broadcast = interfaceAddress.getBroadcast();
                if (broadcast == null) {
                    continue;
                } else {
                    return broadcast;
                }
            }
        }
        return null;
    }
}

Related

1. getBroadcastAddresses()
2. getBroadcastAddresses()
3. getBroadcastAddresses()
4. getBroadcastAddresses(int port)