Java HTTP Port Find isPortUsed(final int portNumber, final String host)

Description

is Port Used

License

Open Source License

Declaration

public static boolean isPortUsed(final int portNumber, final String host) 

Method Source Code

//package com.java2s;
/*//from   w ww  .j  a v a  2 s . c om
*  Copyright (c) 2005-2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. 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.io.IOException;
import java.net.*;

public class Main {
    public static boolean isPortUsed(final int portNumber, final String host) {
        boolean isPortUsed;
        ServerSocket serverSocket = null;
        try {
            InetAddress inetAddress = InetAddress.getByName(host);
            serverSocket = new ServerSocket(portNumber, 50, inetAddress);
            isPortUsed = false;
        } catch (IOException ignored) {
            isPortUsed = true;
        } finally {
            if (serverSocket != null) {
                try {
                    serverSocket.close();
                } catch (IOException e) {
                    isPortUsed = true;
                }
            }
        }
        if (!isPortUsed) {
            Socket socket = null;
            try {
                socket = new Socket("localhost", portNumber);
                isPortUsed = true;
            } catch (IOException ignored) {
                isPortUsed = false;
            } finally {
                if (socket != null) {
                    try {
                        socket.close();
                        isPortUsed = true;
                    } catch (IOException e) {
                        isPortUsed = true;
                    }
                }
            }
        }
        return isPortUsed;
    }
}

Related

1. isPortInUse(int port)
2. isPortOnUse(int port)
3. isPortOpen(int port)
4. isPortOpen(int port, String host)
5. isPortOpen(String host, int port)
6. isPortUsed(int port)
7. isPortUsing(String host, int port)
8. isPortUsing(String host, int port)
9. isReachable(final String hostName, int port, int timeout)