Java HTTP Port Find getOpenPort()

Description

Get a random open port

License

Apache License

Return

true if the port was available for listening on

Declaration

public static int getOpenPort() throws IOException 

Method Source Code

//package com.java2s;
/*//from   www.  java  2s  . com
 * 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;

public class Main {
    /**
     * Get a random open port
     * @return true if the port was available for listening on
     */
    public static int getOpenPort() throws IOException {
        ServerSocket socket = null;
        try {
            socket = new ServerSocket(0);
            return socket.getLocalPort();
        } finally {
            if (socket != null) {
                socket.close();
            }
        }
    }
}

Related

1. getNextAvailablePort()
2. getNextAvailablePort(final int min, final int max, final Collection excepted)
3. getNextAvailablePort(int port)
4. getNodeName(final String managementServerHostName, final int managementPort)
5. getNonPrivilegedPort()
6. getPort(final int suggestedPort)
7. getPort(int port)
8. getPort(Proxy proxy)
9. getPort(String endpoint)