downloader.java

We intend to develop a wifi enabled p2p file sharing system on a linux platform using jxta and java.

/*
 *  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: Downloader.java,v 1.1 2003/05/01 06:14:43 vthakkar Exp $
 */

package edu.uiuc.cs.cs327.linuxwifi.services; 
import java.util.Vector.*;
import java.util.*;
import java.io.*; 
import edu.uiuc.cs.cs327.linuxwifi.app.*;
import edu.uiuc.cs.cs327.linuxwifi.gui.*;
import edu.uiuc.cs.cs327.linuxwifi.util.*;    

import java.io.InputStream;
import java.io.OutputStream;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.MimeMediaType;
import net.jxta.exception.PeerGroupException;
import java.io.FileInputStream;

import net.jxta.peergroup.PeerGroup;
import net.jxta.peergroup.PeerGroupFactory;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.socket.JxtaSocket;
import net.jxta.id.*;

public class Downloader  implements Serializable {

    	private FileInfo downloadFileInfo;
        private PeerGroup netPeerGroup = null;
        private PipeAdvertisement pipeAdv;
        private JxtaSocketLinuxwifi socket;
        private FileTransferRequest ftr;

   // Kabe's GUI Will call me with a FileInfo and PeerAdv which it recieves
   // from the search. FileInfo Object should contain the adv associated with the
   // located machine.


// SET THE DOWNLOAD FLAG ON THE OBJECT
   public Downloader(FileInfo fileInfoObj, PeerGroup pg)
   {
	downloadFileInfo = fileInfoObj;
	netPeerGroup = pg;
	
	System.out.println("Downloader:: " + downloadFileInfo.getFileName());
		
        try {
          ftr = new FileTransferRequest(downloadFileInfo);
          
          SearchRequest srr = new SearchRequest(new MusicProfile());
          
          FileTransferRequest ftrr = new FileTransferRequest(downloadFileInfo);
          
          socket = new JxtaSocketLinuxwifi(ftrr, downloadFileInfo.getPipeAdvertisement(), netPeerGroup , null);
        } 
        catch (Exception e) {
          System.out.println("failed to read/parse pipe advertisement");
          e.printStackTrace();
          System.exit(-1);
        }
        socket.start();
   }

    public void pauseDownload()
    {
        System.out.println("MUST PAUSE DOWNLOAD");
    }

}



// ??? What is up with the incompatibility between the new/old jxta.jars then only way i got them to work
//     is to add both and put the new one last.
// ??? What is this peer advertisement? how does it differ from pipe to peer
// ??? WHere can i get an advertisement of my own, is that what dave was doing in the example (serverSocket)
// ??? WifiMessage needs modifications, see attached
// ??? Need to modify fileinfo to have a pipe advertisement instead of this node info object.