Java HTTP Port Find availableAndReturn(int MIN_PORT_NUMBER, int MAX_PORT_NUMBER)

Description

available And Return

License

Apache License

Declaration

public static ServerSocket availableAndReturn(int MIN_PORT_NUMBER, int MAX_PORT_NUMBER) 

Method Source Code

//package com.java2s;
/*//  w  ww .ja  v  a 2 s .co  m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.ServerSocket;

import java.util.concurrent.atomic.AtomicInteger;

public class Main {
    public static ServerSocket availableAndReturn(int MIN_PORT_NUMBER, int MAX_PORT_NUMBER) {
        boolean bindSuccess = false;
        ServerSocket ss = null;
        AtomicInteger start = new AtomicInteger(MIN_PORT_NUMBER);

        while (!bindSuccess && start.get() < MAX_PORT_NUMBER) {
            try {
                ss = new ServerSocket(start.get());
                ss.setReuseAddress(true);
                bindSuccess = true;
            } catch (IOException e) {
                bindSuccess = false;
                start.set(start.get() + 1);
            } finally {
                if (ss != null && !bindSuccess) {
                    try {
                        ss.close();
                    } catch (IOException e) {
                        /* should not be thrown */
                    }
                }
            }

        }
        return ss;
    }
}

Related

1. available(int port)
2. available(int port)
3. available(int port)
4. available(int port)
5. available_port()
6. availablePort()
7. availablePort(int port)
8. availablePort(int pPort)
9. availablePort(int prefered)