Java HTTP Port Find selectAvailablePort(int preferedPort)

Description

select Available Port

License

Apache License

Declaration

public static int selectAvailablePort(int preferedPort) 

Method Source Code

//package com.java2s;
/*//from  w  w w .j  a  v  a 2  s  .c o 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.InetSocketAddress;

import java.net.ServerSocket;

public class Main {
    public static int selectAvailablePort(int preferedPort) {
        int port = -1;
        ServerSocket ss = null;
        try {
            ss = new ServerSocket();
            ss.bind(new InetSocketAddress(preferedPort));
            port = ss.getLocalPort();
        } catch (IOException e) {
            try {
                ss = new ServerSocket();
                ss.bind(null);
                port = ss.getLocalPort();
            } catch (IOException ee) {
            }
        } finally {
            if (ss != null) {
                try {
                    ss.close();
                } catch (IOException e) {
                }
            }
        }
        return port;
    }
}

Related

1. readHttpContent(String domain, String resource, int port)
2. replace(final String host, final int port, final String user, final String program, final String relation, final String dataset, final String format)
3. resolve(final String desc, final int defaultPort)
4. safePort(final String port)
5. searchPort(int number, int even, boolean stream)
6. sendCommand(final String command, final int monitorPort)
7. sendCommand(String host, Integer port, String cmd)
8. serverIsUp(int port)
9. ServerListening(String host, int port)