// $Id: DummySource.java,v 1.6 2003/10/07 21:46:00 idgay Exp $/*									tab:4 * "Copyright (c) 2000-2003 The Regents of the University  of California.   * All rights reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation for any purpose, without fee, and without written agreement is * hereby granted, provided that the above copyright notice, the following * two paragraphs and the author appear in all copies of this software. *  * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *  * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS." * * Copyright (c) 2002-2003 Intel Corporation * All rights reserved. * * This file is distributed under the terms in the attached INTEL-LICENSE      * file. If you do not find these files, copies can be found by writing to * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA,  * 94704.  Attention:  Intel License Inquiry. */package net.tinyos.packet;import java.io.*;/** * "dummy" packet source */class DummySource extends AbstractSource{    private byte[] dummyPacket = null;    private int nReadDelay  = 1000;    final static int dummySize = 4;    /**     * Packetizers are built using the makeXXX methods in BuildSource     */    DummySource() {	super("dummy");    }    protected void openSource() {        dummyPacket = new byte[dataOffset + dummySize];        dummyPacket[0] = (byte)0x7E;        for (int i = 1; i < dummyPacket.length - 2; i++)	    dummyPacket[i] = (byte)i;	dummyPacket[lengthOffset] = dummySize;    }    protected void closeSource() {    }    protected byte[] readSourcePacket() throws IOException {	try {	    Thread.currentThread ().sleep( nReadDelay );	}	catch (InterruptedException e ) {	    throw new IOException("interrupted");	}	return dummyPacket;    }}