/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* 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 Sun Microsystems, Inc. for JXTA(TM) technology."
* 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.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* 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.tls;
import net.jxta.endpoint.EndpointAddress;
import net.jxta.endpoint.Message;
import net.jxta.endpoint.MessageElement;
import net.jxta.endpoint.StringMessageElement;
import net.jxta.impl.endpoint.BlockingMessenger;
import net.jxta.impl.endpoint.EndpointServiceImpl;
import net.jxta.impl.endpoint.tls.TlsConn.HandshakeState;
import net.jxta.logging.Logging;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This class implements sending messages through a TLS connection.
*/
public class TlsMessenger extends BlockingMessenger {
private static final Logger LOG = Logger.getLogger(TlsMessenger.class.getName());
private TlsTransport transport = null;
private TlsConn conn = null;
/**
* The source address of messages sent on this messenger.
*/
private final EndpointAddress srcAddress;
private final MessageElement srcAddressElement;
TlsMessenger(EndpointAddress destAddress, TlsConn conn, TlsTransport tp) {
// No need for self destruction.
super(tp.getPeerGroup().getPeerGroupID(), destAddress, false);
if (conn == null) {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("null TLS connection!");
}
throw new IllegalArgumentException("null TLS connection!");
}
this.conn = conn;
this.transport = tp;
this.srcAddress = transport.getPublicAddress();
srcAddressElement = new StringMessageElement(EndpointServiceImpl.MESSAGE_SOURCE_NAME, srcAddress.toString()
,
(MessageElement) null);
}
/*
* The cost of just having a finalize routine is high. The finalizer is
* a bottleneck and can delay garbage collection all the way to heap
* exhaustion. Leave this comment as a reminder to future maintainers.
* Below is the reason why finalize is not needed here.
*
* These messengers never go to the application layer. The endpoint code
* always invokes close when needed.
protected void finalize() {
}
*/
/**
* {@inheritDoc}
*/
@Override
public synchronized void closeImpl() {
super.close();
conn = null;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isIdleImpl() {
// No need for self destruction.
return false;
}
/**
* {@inheritDoc}
*
* <p/>The peer that is the destination is the logical address
*/
@Override
public EndpointAddress getLogicalDestinationImpl() {
return new EndpointAddress("jxta", dstAddress.getProtocolAddress(), null, null);
}
/**
* {@inheritDoc}
*/
@Override
public synchronized void sendMessageBImpl(Message message, String service, String serviceParam) throws IOException {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("Starting send for " + message);
}
// check if the connection has died.
if (HandshakeState.CONNECTIONDEAD == conn.getHandshakeState()) {
// FIXME - jice@jxta.org 20040413: This will do but it causes the below exception to be shown as the cause of the
// failure, which is not true: nobody realy closed the messenger before it failed. It failed first. Also, it used to
// shutdown this messenger, now it does not. What does is the call to closeImpl() that follows our IOException...(and
// that's how it should be). Transports should get a deeper retrofit eventually.
close();
}
if (isClosed()) {
IOException failure = new IOException("Messenger is closed, it cannot be used to send messages.");
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.log(Level.WARNING, failure.getMessage(), failure);
}
throw failure;
}
// Set the message with the appropriate src and dest address
message.replaceMessageElement(EndpointServiceImpl.MESSAGE_SOURCE_NS, srcAddressElement);
MessageElement dstAddressElement = new StringMessageElement(EndpointServiceImpl.MESSAGE_DESTINATION_NAME
,
getDestAddressToUse(service, serviceParam).toString(), (MessageElement) null);
message.replaceMessageElement(EndpointServiceImpl.MESSAGE_DESTINATION_NS, dstAddressElement);
// Give the message to the TLS connection
try {
conn.sendMessage(message);
} catch (IOException caught) {
close();
if (Logging.SHOW_SEVERE && LOG.isLoggable(Level.SEVERE)) {
LOG.log(Level.SEVERE, "Message send to \'" + dstAddress + "\' failed for " + message, caught);
}
throw caught;
}
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("Message send to \'" + dstAddress + "\' succeeded for " + message);
}
}
}