Java example source code file (CustomSocketImplFactory.java)

This example Java source code file (CustomSocketImplFactory.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

customsocketimplfactory, exception, inputstream, ioexception, net, network, nullpointerexception, object, outputstream, override, runtimeexception, serversocket, socketexception, socketimpl, sockettimeoutexception

The CustomSocketImplFactory.java Java example source code

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 8024952
 * @summary ClassCastException in PlainSocketImpl.accept() when using custom socketImpl
 * @run main/othervm CustomSocketImplFactory
 */

import java.net.*;
import java.io.*;

public class CustomSocketImplFactory implements SocketImplFactory {

    @Override
    public SocketImpl createSocketImpl() {
        try {
            SocketImpl s = new CustomSocketImpl();
            System.out.println("Created " + s);
            return s;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) throws Exception {

        Socket.setSocketImplFactory(new CustomSocketImplFactory());
        try (ServerSocket ss = new ServerSocket(0)) {
            ss.setSoTimeout(1);
            ss.accept();
            System.out.println("PASS");
        } catch (SocketTimeoutException | NullPointerException e) {
            // Not a real socket impl
        }
    }

    class CustomSocketImpl extends SocketImpl {

        public void create(boolean stream) throws IOException {
        }

        public void connect(String host, int port) throws IOException {
        }

        public void connect(InetAddress addr, int port) throws IOException {
        }

        public void connect(SocketAddress addr, int timeout) throws IOException {
        }

        public void bind(InetAddress host, int port) throws IOException {
        }

        public void listen(int backlog) throws IOException {
        }

        public void accept(SocketImpl s) throws IOException {
        }

        public InputStream getInputStream() throws IOException {
            return null;
        }

        public OutputStream getOutputStream() throws IOException {
            return null;
        }

        public int available() throws IOException {
            return 0;
        }

        public void close() throws IOException {
        }

        public void sendUrgentData(int data) throws IOException {
        }

        public Object getOption(int i) throws SocketException {
            return null;
        }

        public void setOption(int i, Object o) throws SocketException {
        }
    }
}