//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.server;
import java.io.IOException;
import java.util.List;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLEngineResult;
import org.eclipse.jetty.io.AbstractConnection;
import org.eclipse.jetty.io.Connection;
import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
public abstract class NegotiatingServerConnection extends AbstractConnection
{
private static final Logger LOG = Log.getLogger(NegotiatingServerConnection.class);
private final Connector connector;
private final SSLEngine engine;
private final List<String> protocols;
private final String defaultProtocol;
private String protocol; // No need to be volatile: it is modified and read by the same thread
protected NegotiatingServerConnection(Connector connector, EndPoint endPoint, SSLEngine engine, List<String> protocols, String defaultProtocol)
{
super(endPoint, connector.getExecutor(), false);
this.connector = connector;
this.protocols = protocols;
this.defaultProtocol = defaultProtocol;
this.engine = engine;
}
protected List<String> getProtocols()
{
return protocols;
}
protected String getDefaultProtocol()
{
return defaultProtocol;
}
protected SSLEngine getSSLEngine()
{
return engine;
}
protected String getProtocol()
{
return protocol;
}
protected void setProtocol(String protocol)
{
this.protocol = protocol;
}
@Override
public void onOpen()
{
super.onOpen();
fillInterested();
}
@Override
public void onFillable()
{
int filled = fill();
if (filled == 0)
{
if (protocol == null)
{
if (engine.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING)
{
// Here the SSL handshake is finished, but the protocol has not been negotiated.
if (LOG.isDebugEnabled())
LOG.debug("{} could not negotiate protocol, SSLEngine: {}", this, engine);
close();
}
else
{
// Here the SSL handshake is not finished yet but we filled 0 bytes,
// so we need to read more.
fillInterested();
}
}
else
{
ConnectionFactory connectionFactory = connector.getConnectionFactory(protocol);
if (connectionFactory == null)
{
LOG.info("{} application selected protocol '{}', but no correspondent {} has been configured",
this, protocol, ConnectionFactory.class.getName());
close();
}
else
{
EndPoint endPoint = getEndPoint();
Connection oldConnection = endPoint.getConnection();
Connection newConnection = connectionFactory.newConnection(connector, endPoint);
if (LOG.isDebugEnabled())
LOG.debug("{} switching from {} to {}", this, oldConnection, newConnection);
oldConnection.onClose();
endPoint.setConnection(newConnection);
getEndPoint().getConnection().onOpen();
}
}
}
else if (filled < 0)
{
// Something went bad, we need to close.
if (LOG.isDebugEnabled())
LOG.debug("{} detected close on client side", this);
close();
}
else
{
// Must never happen, since we fill using an empty buffer
throw new IllegalStateException();
}
}
private int fill()
{
try
{
return getEndPoint().fill(BufferUtil.EMPTY_BUFFER);
}
catch (IOException x)
{
LOG.debug(x);
close();
return -1;
}
}
@Override
public void close()
{
// Gentler close for SSL.
getEndPoint().shutdownOutput();
super.close();
}
}