Java HTTP Port Find getAvailablePort(int port)

Description

get Available Port

License

Open Source License

Declaration

public static int getAvailablePort(int port) 

Method Source Code

//package com.java2s;
/**/*from  w  w w.j av a2s . c o m*/
 * Copyright (c) 2014 Baidu, Inc. 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.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;

public class Main {
    public static int getAvailablePort(int port) {
        int result = port;

        while (true) {
            if (isPortAvailable(result)) {
                break;
            }
            result++;
        }
        return result;
    }

    public static boolean isPortAvailable(int port) {
        try {
            bindPort("0.0.0.0", port);
            bindPort(InetAddress.getLocalHost().getHostAddress(), port);
            return true;
        } catch (Exception e) {
            return false;
        }
    }

    private static void bindPort(String host, int port) throws Exception {
        Socket s = new Socket();
        s.bind(new InetSocketAddress(host, port));
        s.close();
    }
}

Related

1. getAvailablePort()
2. getAvailablePort()
3. getAvailablePort()
4. getAvailablePort(final int basePort)
5. getAvailablePort(int defaultPort)
6. getAvailablePort(int port)
7. getAvailablePort(int prefferedPort)
8. getAvailablePort(int randomAttempts)
9. getAvailablePort(int startPort)