Java Socket Address Get isUdpPortAvailable(InetSocketAddress localAddress)

Description

is Udp Port Available

License

Apache License

Declaration

private static boolean isUdpPortAvailable(InetSocketAddress localAddress) 

Method Source Code

//package com.java2s;
/*//from  w  ww .  j  ava2 s.c o  m
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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.DatagramSocket;
import java.net.InetSocketAddress;

public class Main {
    private static boolean isUdpPortAvailable(InetSocketAddress localAddress) {
        DatagramSocket ds = null;
        try {
            ds = new DatagramSocket(null);
            ds.setReuseAddress(false);
            ds.bind(localAddress);
            ds.close();
            ds = null;
            return true;
        } catch (Exception ignore) {
            // Unavailable
        } finally {
            if (ds != null) {
                ds.close();
            }
        }

        return false;
    }
}

Related

1. IpToString(InetSocketAddress address)
2. isAddressDefined(InetSocketAddress address)
3. isLegalPeerAddress(@CheckForNull SocketAddress socketAddress)
4. isLocalAddress(Socket socket)
5. isSameAddress(SocketAddress a1, SocketAddress a2)
6. isUnresolved(SocketAddress address)
7. isValidMulticastAddress(final InetSocketAddress address)
8. normalizeSocketAddr(InetSocketAddress address)
9. parseAddress(SocketAddress address)