Java HTTP Port Find findFreePort(int startPort)

Description

find Free Port

License

Mozilla Public License

Declaration

public static int findFreePort(int startPort) 

Method Source Code

//package com.java2s;
/*****************************************************************************************
 * *** BEGIN LICENSE BLOCK *****/*from w  w w.j  a v a  2 s .co  m*/
 *
 * Version: MPL 2.0
 *
 * echocat jConscius, Copyright (c) 2010-2012 echocat
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * *** END LICENSE BLOCK *****
 ****************************************************************************************/

import java.net.InetSocketAddress;
import java.net.Socket;

public class Main {
    public static int findFreePort(int startPort) {
        int current = startPort;
        boolean found = false;
        while (!found) {
            final Socket socket = new Socket();
            try {
                socket.connect(new InetSocketAddress("127.0.0.1", current), 100);
                current++;
            } catch (Exception ignored) {
                found = true;
            } finally {
                try {
                    socket.close();
                } catch (Exception ignored) {
                }
            }
        }
        return current;
    }
}

Related

1. findFreePort()
2. findFreePort()
3. findFreePort()
4. findFreePort(int start, int len)
5. findFreePort(int start, int limit)
6. findFreePort(int startPort)
7. findFreePortExcepting(int portToExclude)
8. findFreePortForApi()
9. findUnusedPort()