/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.mina.transport.socket.nio.support;
import java.net.SocketAddress;
import java.net.SocketException;
import java.nio.channels.DatagramChannel;
import java.nio.channels.SelectionKey;
import org.apache.mina.common.BroadcastIoSession;
import org.apache.mina.common.IoFilterChain;
import org.apache.mina.common.IoHandler;
import org.apache.mina.common.IoService;
import org.apache.mina.common.IoServiceConfig;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.IoSessionConfig;
import org.apache.mina.common.RuntimeIOException;
import org.apache.mina.common.TransportType;
import org.apache.mina.common.WriteFuture;
import org.apache.mina.common.IoFilter.WriteRequest;
import org.apache.mina.common.support.BaseIoSession;
import org.apache.mina.transport.socket.nio.DatagramServiceConfig;
import org.apache.mina.transport.socket.nio.DatagramSessionConfig;
import org.apache.mina.util.Queue;
/**
* An {@link IoSession} for datagram transport (UDP/IP).
*
* @author The Apache Directory Project (mina-dev@directory.apache.org)
* @version $Rev: 501697 $, $Date: 2007-01-31 11:53:37 +0900 (수, 31 1월 2007) $
*/
class DatagramSessionImpl extends BaseIoSession implements BroadcastIoSession
{
private final IoService wrapperManager;
private final IoServiceConfig serviceConfig;
private final DatagramSessionConfig config = new SessionConfigImpl();
private final DatagramService managerDelegate;
private final DatagramFilterChain filterChain;
private final DatagramChannel ch;
private final Queue writeRequestQueue;
private final IoHandler handler;
private final SocketAddress localAddress;
private final SocketAddress serviceAddress;
private SocketAddress remoteAddress;
private SelectionKey key;
private int readBufferSize;
/**
* Creates a new instance.
*/
DatagramSessionImpl( IoService wrapperManager,
DatagramService managerDelegate,
IoServiceConfig serviceConfig,
DatagramChannel ch, IoHandler defaultHandler,
SocketAddress serviceAddress )
{
this.wrapperManager = wrapperManager;
this.managerDelegate = managerDelegate;
this.filterChain = new DatagramFilterChain( this );
this.ch = ch;
this.writeRequestQueue = new Queue();
this.handler = defaultHandler;
this.remoteAddress = ch.socket().getRemoteSocketAddress();
// We didn't set the localhost by calling getLocalSocketAddress() to avoid
// the case that getLocalSocketAddress() returns IPv6 address while
// serviceAddress represents the same address in IPv4.
this.localAddress = this.serviceAddress = serviceAddress;
this.serviceConfig = serviceConfig;
// Apply the initial session settings
IoSessionConfig sessionConfig = serviceConfig.getSessionConfig();
if( sessionConfig instanceof DatagramSessionConfig )
{
DatagramSessionConfig cfg = ( DatagramSessionConfig ) sessionConfig;
this.config.setBroadcast( cfg.isBroadcast() );
this.config.setReceiveBufferSize( cfg.getReceiveBufferSize() );
this.config.setReuseAddress( cfg.isReuseAddress() );
this.config.setSendBufferSize( cfg.getSendBufferSize() );
if( this.config.getTrafficClass() != cfg.getTrafficClass() )
{
this.config.setTrafficClass( cfg.getTrafficClass() );
}
}
}
public IoService getService()
{
return wrapperManager;
}
public IoServiceConfig getServiceConfig()
{
return serviceConfig;
}
public IoSessionConfig getConfig()
{
return config;
}
DatagramService getManagerDelegate()
{
return managerDelegate;
}
public IoFilterChain getFilterChain()
{
return filterChain;
}
DatagramChannel getChannel()
{
return ch;
}
SelectionKey getSelectionKey()
{
return key;
}
void setSelectionKey( SelectionKey key )
{
this.key = key;
}
public IoHandler getHandler()
{
return handler;
}
protected void close0()
{
IoServiceConfig config = getServiceConfig();
if( config instanceof DatagramServiceConfig )
{
( ( DatagramServiceConfig ) config ).getSessionRecycler().remove( this );
}
filterChain.fireFilterClose( this );
}
Queue getWriteRequestQueue()
{
return writeRequestQueue;
}
public WriteFuture write( Object message, SocketAddress destination )
{
if( !this.config.isBroadcast() )
{
throw new IllegalStateException( "Non-broadcast session" );
}
return super.write( message, destination );
}
protected void write0( WriteRequest writeRequest )
{
filterChain.fireFilterWrite( this, writeRequest );
}
public int getScheduledWriteRequests()
{
synchronized( writeRequestQueue )
{
return writeRequestQueue.size();
}
}
public int getScheduledWriteBytes()
{
synchronized( writeRequestQueue )
{
return writeRequestQueue.byteSize();
}
}
public TransportType getTransportType()
{
return TransportType.DATAGRAM;
}
public SocketAddress getRemoteAddress()
{
return remoteAddress;
}
void setRemoteAddress( SocketAddress remoteAddress )
{
this.remoteAddress = remoteAddress;
}
public SocketAddress getLocalAddress()
{
return localAddress;
}
public SocketAddress getServiceAddress()
{
return serviceAddress;
}
protected void updateTrafficMask()
{
managerDelegate.updateTrafficMask( this );
}
int getReadBufferSize()
{
return readBufferSize;
}
private class SessionConfigImpl extends DatagramSessionConfigImpl implements DatagramSessionConfig
{
public int getReceiveBufferSize()
{
try
{
return ch.socket().getReceiveBufferSize();
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
public void setReceiveBufferSize( int receiveBufferSize )
{
if( DatagramSessionConfigImpl.isSetReceiveBufferSizeAvailable() )
{
try
{
ch.socket().setReceiveBufferSize( receiveBufferSize );
// Re-retrieve the effective receive buffer size.
receiveBufferSize = ch.socket().getReceiveBufferSize();
DatagramSessionImpl.this.readBufferSize = receiveBufferSize;
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
}
public boolean isBroadcast()
{
try
{
return ch.socket().getBroadcast();
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
public void setBroadcast( boolean broadcast )
{
try
{
ch.socket().setBroadcast( broadcast );
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
public int getSendBufferSize()
{
try
{
return ch.socket().getSendBufferSize();
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
public void setSendBufferSize( int sendBufferSize )
{
if( DatagramSessionConfigImpl.isSetSendBufferSizeAvailable() )
{
try
{
ch.socket().setSendBufferSize( sendBufferSize );
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
}
public boolean isReuseAddress()
{
try
{
return ch.socket().getReuseAddress();
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
public void setReuseAddress( boolean reuseAddress )
{
try
{
ch.socket().setReuseAddress( reuseAddress );
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
public int getTrafficClass()
{
if( DatagramSessionConfigImpl.isGetTrafficClassAvailable() )
{
try
{
return ch.socket().getTrafficClass();
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
else
{
return 0;
}
}
public void setTrafficClass( int trafficClass )
{
if( DatagramSessionConfigImpl.isSetTrafficClassAvailable() )
{
try
{
ch.socket().setTrafficClass( trafficClass );
}
catch( SocketException e )
{
throw new RuntimeIOException( e );
}
}
}
}
}