sslserversocketfactory.java

利用mina框架写的一个通信实例。初学者的一个好教程。

/*
 *   @(#) $Id: SSLServerSocketFactory.java 357871 2005-12-20 01:56:40Z trustin $
 *
 *   Copyright 2004 The Apache Software Foundation
 *
 *   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.
 *
 */
package org.apache.mina.examples.echoserver.ssl;

import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.security.GeneralSecurityException;

import javax.net.ServerSocketFactory;

/**
 * Simple Server Socket factory to create sockets with or without SSL enabled.
 * If SSL enabled a "bougus" SSL Context is used (suitable for test purposes)
 * 
 * @version $Rev: 357871 $, $Date: 2005-12-20 10:56:40 +0900 (Tue, 20 Dec 2005) $
 */
public class SSLServerSocketFactory extends javax.net.ServerSocketFactory {
	private static boolean sslEnabled = false;

	private static javax.net.ServerSocketFactory sslFactory = null;

	private static ServerSocketFactory factory = null;

	public SSLServerSocketFactory() {
		super();
	}

	public ServerSocket createServerSocket(int port) throws IOException {
		return new ServerSocket(port);
	}

	public ServerSocket createServerSocket(int port, int backlog)
			throws IOException {
		return new ServerSocket(port, backlog);
	}

	public ServerSocket createServerSocket(int port, int backlog,
			InetAddress ifAddress) throws IOException {
		return new ServerSocket(port, backlog, ifAddress);
	}

	public static javax.net.ServerSocketFactory getServerSocketFactory()
			throws IOException {
		if (isSslEnabled()) {
			if (sslFactory == null) {
				try {
					sslFactory = BogusSSLContextFactory.getInstance(true)
							.getServerSocketFactory();
				} catch (GeneralSecurityException e) {
					IOException ioe = new IOException(
							"could not create SSL socket");
					ioe.initCause(e);
					throw ioe;
				}
			}
			return sslFactory;
		} else {
			if (factory == null) {
				factory = new SSLServerSocketFactory();
			}
			return factory;
		}

	}

	public static boolean isSslEnabled() {
		return sslEnabled;
	}

	public static void setSslEnabled(boolean newSslEnabled) {
		sslEnabled = newSslEnabled;
	}
}