httpservermessenger.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: HttpServerMessenger.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.InputStream;
import java.util.Vector;

import java.io.IOException;

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

import net.jxta.document.MimeMediaType;
import net.jxta.endpoint.EndpointAddress;
import net.jxta.endpoint.EndpointMessenger;
import net.jxta.endpoint.Message;

import net.jxta.impl.endpoint.Address;

import net.jxta.impl.endpoint.MessageImpl;
import java.io.ByteArrayOutputStream;
import net.jxta.impl.endpoint.MessageWireFormat;
import net.jxta.impl.endpoint.MessageWireFormatFactory;
import java.io.ByteArrayInputStream;

/**
 * A EndpointMessenger allows to send Messages onto
 * its associated EndpointProtocol.
 *
 **/
public class HttpServerMessenger implements EndpointMessenger {

    private static final Category LOG = Category.getInstance(HttpServerMessenger.class.getName());

    private EndpointAddress srcAddress = null;

    private EndpointAddress dstAddress = null;

    private HttpTransport proto = null;

    private String clientId = null;

    public HttpServerMessenger (EndpointAddress destAddr,
                                HttpTransport tpt)
               throws IOException {

        if (destAddr == null) {
            if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug("destination address is null");
            throw new IllegalArgumentException( "destination address is null" );
        }

        proto = tpt;
        dstAddress = (EndpointAddress) destAddr.clone();
        srcAddress = proto.getPublicAddress();
        clientId = destAddr.getProtocolAddress().substring (proto.MagicWord.length());

        if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("Creating object for:");
        if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("    client = " + clientId);
    }


    /**
     * Send a Message onto that link.
     *
     * @param message TransportMessage to be sent.
     */
    public void sendMessage (Message message) throws IOException {

        // Set the message with the appropriate src and dest address
        message.setSourceAddress(srcAddress);
        message.setDestinationAddress(dstAddress);

        Vector msgBuffers = new Vector();
	int msgSize = 0;

        try {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            MessageWireFormatFactory.newMessageWireFormat( 
            new MimeMediaType( "text/xml" ) ).writeMessage(baos, message);
            baos.close();
            byte bytes[] = baos.toByteArray();
            ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);

            final int bufferSize = 4096;

	    do {
		byte [] nextBuffer = new byte[bufferSize];

		int readLength = inputStream.read( nextBuffer );

		if( readLength == -1)
		    break;
		
		if( readLength == 0)
		    continue;

		if( readLength < bufferSize ) {
		    byte [] anotherBuffer = new byte[readLength];
		    System.arraycopy( nextBuffer, 0, anotherBuffer, 0, readLength );
		    nextBuffer = anotherBuffer;
		}

		msgSize += nextBuffer.length;
		msgBuffers.addElement( nextBuffer );
	    }  while( true );

        } catch (Exception e) {
            if (LOG.isEnabledFor(Priority.WARN)) LOG.warn("HTTP - send - cannot read outgoing message", e );
            throw new IOException("HTTP - send - cannot read outgoing message");
        }

        proto.server.sendMessageToClient (clientId, msgBuffers, msgSize );
    }

    /**
     * Close this EndpointMessenger
     */
    public void close() {
        // Nothing has to be done
    }
}