httptransport.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

/************************************************************************
 *
 * $Id: HttpTransport.java,v 1.2 2002/03/04 21:42:57 echtcherbina Exp $
 *
 * 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.
 *********************************************************************************/

package net.jxta.impl.endpoint.http;

import java.io.File;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.SequenceInputStream;
import java.lang.Math;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;

import java.io.InterruptedIOException;
import java.io.IOException;
import java.net.ConnectException;
import java.net.MalformedURLException;
import java.net.UnknownHostException;
import net.jxta.impl.endpoint.http.HttpServer.ClientConnection;


import org.apache.log4j.Category; import org.apache.log4j.Priority;


import net.jxta.document.Advertisement;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.TextElement;
import net.jxta.document.Element;
import net.jxta.document.MimeMediaType;
import net.jxta.endpoint.EndpointService;
import net.jxta.endpoint.EndpointAddress;
import net.jxta.endpoint.EndpointMessenger;
import net.jxta.endpoint.EndpointProtocol;
import net.jxta.endpoint.Message;
import net.jxta.exception.PeerGroupException;
import net.jxta.id.ID;
import net.jxta.id.IDFactory;
import net.jxta.peergroup.PeerGroup;
import net.jxta.protocol.ModuleImplAdvertisement;
import net.jxta.protocol.PeerAdvertisement;
import net.jxta.protocol.TransportAdvertisement;

import net.jxta.impl.cm.Cm;
import net.jxta.impl.endpoint.Address;
import net.jxta.impl.endpoint.MessageImpl;
import net.jxta.impl.protocol.HTTPAdv;
import net.jxta.impl.endpoint.http.HttpMessage;
import net.jxta.impl.endpoint.MessageWireFormat;
import net.jxta.impl.endpoint.MessageWireFormatFactory;
import net.jxta.impl.endpoint.MessageWireFormatXML;

import net.jxta.platform.Module;

/***
 * This class implements the HTTP Transport Protocol
 *
 *  @version $Revision: 1.2 $
 **/
public class HttpTransport implements EndpointProtocol, Module {
    
    private static final Category LOG = Category.getInstance(HttpTransport.class.getName());
    
    /**
     * Set useBlockingSend to false in order to force HttpTransport to
     * always poll.
     **/
    static final boolean        useBlockingSend = true;
    
    
    static final String         Register = "reg";
    static final String         Receive = "rec";
    static final String         BlockingReceive = "blk";
    static final String         Send = "snd";
    static final String         Ping = "ack";
    
    static final Cm             cm = new Cm("HttpTransport", false);
    
    static final HttpMessage    PingOk = new HttpMessage( "Jxta Ping OK" );
    
/*
 static final Object[] HTTPRESPONSES = {
        new Object[]{ 100, "Continue" },
        new Object[]{ 101, "Switching Protocols" },
 
        new Object[]{ 200, "OK" },
        new Object[]{ 201, "Created" },
        new Object[]{ 202, "Accepted" },
        new Object[]{ 203, "Non-Authoritative Information" },
        new Object[]{ 204, "No Content" },
        new Object[]{ 205, "Reset Content" },
        new Object[]{ 206, "Partial Content" },
 
        new Object[]{ 300, "Multiple Choices" },
        new Object[]{ 301, "Moved Permanently" },
        new Object[]{ 302, "Found" },
        new Object[]{ 303, "See Other" },
        new Object[]{ 304, "Not Modified" },
        new Object[]{ 305, "Use Proxy" },
        new Object[]{ 306, "(Reserved)" },
        new Object[]{ 307, "Temporary Redirect" },
 
        new Object[]{ 400, "Bad Request" },
        new Object[]{ 401, "Unauthorized" },
        new Object[]{ 402, "Payment Required" },
        new Object[]{ 403, "Forbidden" },
        new Object[]{ 404, "Not Found" },
        new Object[]{ 405, "Method Not Allowed" },
        new Object[]{ 406, "Not Acceptable" },
        new Object[]{ 407, "Proxy Authentication Required" },
        new Object[]{ 408, "Request Timeout" },
        new Object[]{ 409, "Conflict" },
        new Object[]{ 410, "Gone" },
        new Object[]{ 411, "Length Required" },
        new Object[]{ 412, "Precondition Failed" },
        new Object[]{ 413, "Request Entity Too Large" },
        new Object[]{ 414, "Request-URI Too Large" },
        new Object[]{ 415, "Unsupported Media Type" },
        new Object[]{ 416, "Requested Range Not Satisfiable" },
        new Object[]{ 417, "Expectation Failed" },
 
        new Object[]{ 500, "Internal Server Error" },
        new Object[]{ 501, "Not Implemented" },
        new Object[]{ 502, "Bad Gateway" },
        new Object[]{ 503, "Service Unavailable" },
        new Object[]{ 504, "Gateway Timeout" },
        new Object[]{ 505, "HTTP Version Not Supported" } };
 */
    /**
     *  socket keep alive time in milliseconds
     **/
    static final int            LingerDelay = 30 * 1000;
    
    /**
     *  socket timeout time in milliseconds
     **/
    static final int            SocketTimeout = 30 * 1000;
    
    static final String         MagicWord = "JxtaHttpClient";
    
    static final int            PollingSend = 1;
    static final int            BlockingSend = 2;
    
    private PeerGroup           group = null;
    private EndpointService            endpoint = null;
    
    /**
     *  This is the thread group into which we will place all of the threads
     *  we create. THIS HAS NO EFFECT ON SCHEDULING. Java thread groups are
     *  only for organization and naming.
     **/
    private ThreadGroup         myThreadGroup = null;
    
    private String              interfaceAddress = null;
    
    /**
     *  The network interface on which all communication will occur.
     **/
    private InetAddress         usingInterface = null;
    
    private String              serverName = null;
    private int                 serverSocketPort = -1;
    HttpServer                  server = null;
    
    /**
     *  The peerID we are working for.
     **/
    String                      localClientId = null;

    private Vector              routers = null;
    private String              proxyName = null;
    private URL                 proxyHost = null;
    
    /**
     *  The thread which does server polling for us.
     **/
    private HttpClient          pollingThread = null;
    
    /**
     *  These are connections we have as a client with servers.
     **/
    private Hashtable           servers = new Hashtable();
    
    private EndpointAddress     publicAddress = null;
    
    private EndpointAddress     publicServerAddress = null;
    
    private EndpointAddress     publicClientAddress = null;
    
    /**
     *  This is the name of the cm spool folder
     *  MOVE TO SERVER
     **/
    String              HttpSpool;
    
    /**
     * Our protocol name. By default "http" but can be changed by the
     * impl adv.
     */
    String protocolName = "http";
    
    /**
     *  Manages a connection that we have with a server.
     **/
    static class ServerConnection extends Thread {
        
        /**
         *  The interval between polling attempts.
         **/
        private static final int PollingDelay = 20000; // 20 seconds
        
        private static final int MAXFAILURES = 2;
        
        private long lastReceivedMsg = 0;
        private long lastFailure = 0;
        private int failureMode = 0;
        private URL remoteUrl = null;
        private HttpTransport tp = null;
        private String routerName = null;
        
        public ServerConnection( ThreadGroup inGroup, HttpTransport tp, String router, String clientId ) {
            
            super( inGroup, (Runnable) null, "Server Connection to " + router );
            
            this.tp = tp;
            this.routerName = router;
            try {
                String host = router;
                int port = 80;
                
                int sepAt = router.lastIndexOf( ':' );
                if( -1 != sepAt ) {
                    host = router.substring(0, sepAt );
                    port = Integer.parseInt( router.substring(sepAt + 1) );
                }
                
                this.remoteUrl = new URL( "http", host, port,
                "/blk/" + clientId + "/" );
            } catch( MalformedURLException badurl ) {
                throw new IllegalArgumentException( "Invalid server or client id" );
            }
        }
        
        /**
         *  The daemon thread which polls the server for messages.
         **/
        public void run() {
            
            // record the connection
            tp.recordConnection( routerName, this );
            
            try {
                while (true) {
                    if (!tp.pollRemote( remoteUrl, BlockingSend )) {
                        // Check when last time
                        long current = System.currentTimeMillis();
                        
                        if (lastFailure == 0) {
                            // This is the first failure after a working period.
                            // Just record the time
                            lastFailure = current;
                            continue;
                        }
                        
                        if ((current - lastFailure) > PollingDelay) {
                            // If the delay between two failures is greater than
                            // the polling delay, it is better, still, to use the
                            // BlockingSend protocol.
                            failureMode = 0;
                            lastFailure = current;
                            continue;