/*
* Created on Feb 9, 2005
* Created by Alon Rohter
* Copyright (C) 2004-2005 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package org.gudy.azureus2.pluginsimpl.local.network;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import org.gudy.azureus2.plugins.messaging.MessageStreamDecoder;
import org.gudy.azureus2.plugins.messaging.MessageStreamEncoder;
import org.gudy.azureus2.plugins.network.Connection;
import org.gudy.azureus2.plugins.network.ConnectionManager;
import org.gudy.azureus2.plugins.network.Transport;
import org.gudy.azureus2.plugins.network.TransportCipher;
import org.gudy.azureus2.plugins.network.TransportException;
import org.gudy.azureus2.plugins.network.TransportFilter;
import org.gudy.azureus2.pluginsimpl.local.messaging.MessageStreamDecoderAdapter;
import org.gudy.azureus2.pluginsimpl.local.messaging.MessageStreamEncoderAdapter;
import com.aelitis.azureus.core.AzureusCore;
import com.aelitis.azureus.core.networkmanager.ConnectionEndpoint;
import com.aelitis.azureus.core.networkmanager.NetworkManager;
import com.aelitis.azureus.core.networkmanager.ProtocolEndpoint;
import com.aelitis.azureus.core.networkmanager.ProtocolEndpointFactory;
import com.aelitis.azureus.core.networkmanager.impl.TransportHelper;
import com.aelitis.azureus.core.networkmanager.impl.TransportHelperFilter;
import com.aelitis.azureus.core.networkmanager.impl.udp.UDPNetworkManager;
import com.aelitis.azureus.core.networkmanager.impl.TransportHelperFilterStreamCipher;
import com.aelitis.azureus.core.networkmanager.impl.tcp.ProtocolEndpointTCP;
import com.aelitis.azureus.core.networkmanager.impl.tcp.TCPTransportHelper;
import com.aelitis.azureus.core.networkmanager.impl.tcp.TCPTransportImpl;
import com.aelitis.azureus.core.networkmanager.impl.udp.UDPTransport;
import com.aelitis.azureus.core.networkmanager.impl.udp.UDPTransportHelper;
/**
*
*/
public class ConnectionManagerImpl implements ConnectionManager {
private static ConnectionManagerImpl instance;
public static synchronized ConnectionManagerImpl
getSingleton(
AzureusCore core )
{
if ( instance == null ){
instance = new ConnectionManagerImpl( core );
}
return( instance );
}
private AzureusCore azureus_core;
private ConnectionManagerImpl(AzureusCore _core) {
azureus_core = _core;
}
public Connection
createConnection(
InetSocketAddress remote_address,
MessageStreamEncoder encoder,
MessageStreamDecoder decoder )
{
ConnectionEndpoint connection_endpoint = new ConnectionEndpoint( remote_address );
connection_endpoint.addProtocol( ProtocolEndpointFactory.createEndpoint( ProtocolEndpoint.PROTOCOL_TCP, remote_address ));
com.aelitis.azureus.core.networkmanager.NetworkConnection core_conn =
NetworkManager.getSingleton().createConnection( connection_endpoint, new MessageStreamEncoderAdapter( encoder ), new MessageStreamDecoderAdapter( decoder ), false, false, null );
return new ConnectionImpl( core_conn, false );
}
public int
getNATStatus()
{
return( azureus_core.getGlobalManager().getNATStatus());
}
public TransportCipher createTransportCipher(String algorithm, int mode, SecretKeySpec key_spec, AlgorithmParameterSpec params) throws TransportException {
try {
com.aelitis.azureus.core.networkmanager.impl.TransportCipher cipher = new com.aelitis.azureus.core.networkmanager.impl.TransportCipher(algorithm, mode, key_spec, params);
return new TransportCipherImpl(cipher);
}
catch (Exception e) {
throw new TransportException(e);
}
}
public TransportFilter createTransportFilter(Connection connection, TransportCipher read_cipher, TransportCipher write_cipher) throws TransportException {
Transport transport = connection.getTransport();
com.aelitis.azureus.core.networkmanager.Transport core_transport;
try {core_transport = ((TransportImpl)transport).coreTransport();}
catch (IOException e) {throw new TransportException(e);}
TransportHelper helper;
if (core_transport instanceof TCPTransportImpl) {
TransportHelperFilter hfilter = ((TCPTransportImpl)core_transport).getFilter();
if (hfilter != null) {helper = hfilter.getHelper();}
else {
helper = new TCPTransportHelper(((TCPTransportImpl)(core_transport)).getSocketChannel());
}
} else if (core_transport instanceof UDPTransport) {
TransportHelperFilter hfilter = ((UDPTransport)core_transport).getFilter();
if (hfilter != null) {helper = hfilter.getHelper();}
else {
helper = ((UDPTransport)core_transport).getFilter().getHelper();
InetSocketAddress addr = core_transport.getTransportEndpoint().getProtocolEndpoint().getConnectionEndpoint().getNotionalAddress();
if (!connection.isIncoming()) {
try {helper = new UDPTransportHelper(UDPNetworkManager.getSingleton().getConnectionManager(), addr, (UDPTransport)core_transport);}
catch (IOException ioe) {throw new TransportException(ioe);}
}
else {
/**
* Not sure how I can grab the UDPConnection object to pass to the incoming
* connection constructor. The only time I can figure out where we can link
* up the UDPConnection object is in UDPConnectionManager.accept - we have a
* transport object and we construct a UDPConnection object, so we could link
* them there - but I don't know if we really should associate the UDP connection
* with the transport (might breaks encapsulation).
*/
//helper = new UDPTransportHelper(UDPNetworkManager.getSingleton().getConnectionManager(), addr, (UDPTransport)core_transport);
throw new TransportException("udp incoming transport type not supported - " + core_transport);
}
}
} else {
throw new TransportException("transport type not supported - " + core_transport);
}
TransportHelperFilterStreamCipher core_filter = new TransportHelperFilterStreamCipher(helper, ((TransportCipherImpl)read_cipher).cipher, ((TransportCipherImpl)write_cipher).cipher);
return new TransportFilterImpl(core_filter);
}
}