Java HTTP Port Find getAvailablePort()

Description

get Available Port

License

Apache License

Return

An ephemeral port available for test usage

Declaration

public static int getAvailablePort() 

Method Source Code

//package com.java2s;
/**//from ww w . j a v  a  2  s. c  o m
 * Copyright 2014 Comcast Cable Communications Management, LLC
 *
 * 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://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.net.ServerSocket;

public class Main {
    /**
     * @return An ephemeral port available for test usage
     */
    public static int getAvailablePort() {
        try (ServerSocket s = new ServerSocket(0)) {
            return s.getLocalPort();
        } catch (Exception e) {
            throw new AssertionError("Failed to find available port", e);
        }
    }
}

Related

1. getAllHostNames(String hostName, int portNumber, String bindingUser)
2. getAnonymousPort()
3. getAnonymousPort()
4. getAvailableListenPort()
5. getAvailablePort()
6. getAvailablePort()
7. getAvailablePort()
8. getAvailablePort()
9. getAvailablePort()