SocketUtils.java

/*
 * Copyright 2011-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed 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://aws.amazon.com/apache2.0
 *
 * This file 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.
 */
package utils.http;

import java.io.IOException;
import java.net.ServerSocket;

public class SocketUtils {

    /**
     * Returns an unused port in the localhost.
     */
    public static int getUnusedPort() throws IOException {
        ServerSocket socket = new ServerSocket(0);
        socket.setReuseAddress(true);
        int port = socket.getLocalPort();
        socket.close();
        return port;
    }
}