httpadv.java

jxme的一些相关程序,主要是手机上程序开发以及手机和计算机通信的一些程序资料,程序编译需要Ant支持

/*
 * Copyright (c) 2001 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL SUN MICROSYSTEMS OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: HTTPAdv.java,v 1.26 2002/01/03 01:18:42 bondolo Exp $
 */

package net.jxta.impl.protocol;

import java.io.*;
import java.util.*;
import net.jxta.document.*;
import net.jxta.protocol.*;
import net.jxta.id.ID;

/**
 * This class implements the HTTPAdvertisement. While being useful,
 * application are not required to use it. However, applications that
 * donot want to use it will still have to provide a class that
 * extends net.jxta.HTTP.HTTPAdvertisement.
 *
 */

public class HTTPAdv extends TransportAdvertisement {

    private String proxy  = null;
    private Vector routers = null;
    private String server = null;
    private String port = null; // The real port a server listens to
    private String interfaceAddress = null; // What IP to bind to locally
    private String configMode = null;

    private static final String ProtocolTag = "Protocol";

    private static final String RouterTag = "Router";
    private static final String ProxyTag = "Proxy";
    private static final String ServerTag = "Server";
    private static final String PortTag = "Port";
    private static final String IntfAddrTag = "InterfaceAddress";
    private static final String ConfModeTag = "ConfigMode";

    // These are for configuration; They get saved in the document only if they are
    // off and the correspondig item has a non-null value. So that the value is not lost.
    // When HttpTransport is done initializing, the unused values are set to null, and thus
    // pruned from the published adv.

    private boolean proxyEnabled = true;
    private boolean routerEnabled = true;
    private boolean serverEnabled = true;

    private static final String RouterOffTag = "RouterOff";
    private static final String ProxyOffTag = "ProxyOff";
    private static final String ServerOffTag = "ServerOff";

    public static class Instantiator implements AdvertisementFactory.Instantiator {
        
        /**
         * Returns the identifying type of this Advertisement.
         *
         * @return String the type of advertisement
         *
         * @since JXTA 1.0
         **/
        public String getAdvertisementType( ) {
            return HTTPAdv.getAdvertisementType();
        }
        
        /**
         * Constructs an instance of <CODE>Advertisement</CODE> matching the type
         * specified by the <CODE>advertisementType</CODE> parameter.
         *
         * @param advertisementType Specifies the mime media type to be associated with the
         * <CODE>StructuredDocument</CODE> to be created.
         * @return The instance of <CODE>Advertisement</CODE> or null if it
         * could not be created.
         *
         * @exception InvocationTargetException error invoking target constructor
         *
         * @since JXTA 1.0
         **/
        public Advertisement newInstance( ) {
            return new HTTPAdv();
        }
        
        /**
         * Constructs an instance of <CODE>Advertisement</CODE> matching the type
         * specified by the <CODE>advertisementType</CODE> parameter.
         *
         * @param root Specifies a portion of a StructuredDocument which will be
         * converted into an Advertisement.
         * @return The instance of <CODE>Advertisement</CODE> or null if it
         * could not be created.
         *
         * @exception InvocationTargetException error invoking target constructor
         *
         * @since JXTA 1.0
         **/
        public Advertisement newInstance( net.jxta.document.Element root ) {
            return new HTTPAdv( root );
        }
    };

    public static String getAdvertisementType() {
        return "jxta:HTTPTransportAdvertisement";
    }
    
    public HTTPAdv() {
    }
    
    public HTTPAdv( Element root ) {
        initialize( root );
    }
    
    public void initialize(Element root) {
        
        if( !TextElement.class.isInstance( root ) )
            throw new IllegalArgumentException( getClass().getName() + " only supports TextElement" );
        
        TextElement doc = (TextElement) root;
        
        String docName = doc.getName();
        
        if( !docName.equals(getAdvertisementType()) && 
            !docName.equals(super.getAdvertisementType()) )
            throw new IllegalArgumentException( "Could not construct : "
            + getClass().getName()
            + "from doc containing a "
            + doc.getName() );
        
        Enumeration elements = doc.getChildren();

        while (elements.hasMoreElements()) {
            TextElement elem = (TextElement) elements.nextElement();
            String tag = elem.getName();
            String value = null;

            if ( tag.equals(RouterOffTag) ) {
                routerEnabled = false;
                continue;
            }
            if ( tag.equals(ProxyOffTag) ) {
                proxyEnabled = false;
                continue;
            }
            if ( tag.equals(ServerOffTag) ) {
                serverEnabled = false;
                continue;
            }

            try {
                value = elem.getTextValue();
            } catch (Exception e) {
                continue; // In case there's no value (not any of the below tags).
            }

            if( tag.equals(ProtocolTag)) {
                setProtocol( value );
                continue;
            }
            if( tag.equals(IntfAddrTag)) {
                setInterfaceAddress( value );
                continue;
            }
            if( tag.equals(ConfModeTag)) {