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/*
* Copyright (c) 2011 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS 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 THE COPYRIGHT OWNER OR
* 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.
*/
package com.jme3.network.kernel.udp;
import com.jme3.network.kernel.Endpoint;
import com.jme3.network.kernel.Kernel;
import com.jme3.network.kernel.KernelException;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
/**
* Endpoint implementation that encapsulates the
* UDP connection information for return messaging,
* identification of envelope sources, etc.
*
* @version $Revision: 8843 $
* @author Paul Speed
*/
public class UdpEndpoint implements Endpoint
{
private long id;
private SocketAddress address;
private DatagramSocket socket;
private UdpKernel kernel;
private boolean connected = true; // it's connectionless but we track logical state
public UdpEndpoint( UdpKernel kernel, long id, SocketAddress address, DatagramSocket socket )
{
this.id = id;
this.address = address;
this.socket = socket;
this.kernel = kernel;
}
public Kernel getKernel()
{
return kernel;
}
protected SocketAddress getRemoteAddress()
{
return address;
}
public void close()
{
close( false );
}
public void close( boolean flush )
{
// No real reason to flush UDP traffic yet... especially
// when considering that the outbound UDP isn't even
// queued.
try {
kernel.closeEndpoint(this);
connected = false;
} catch( IOException e ) {
throw new KernelException( "Error closing endpoint for socket:" + socket, e );
}
}
public long getId()
{
return id;
}
public String getAddress()
{
return String.valueOf(address);
}
public boolean isConnected()
{
// The socket is always unconnected anyway so we track our
// own logical state for the kernel's benefit.
return connected;
}
public void send( ByteBuffer data )
{
if( !isConnected() ) {
throw new KernelException( "Endpoint is not connected:" + this );
}
try {
DatagramPacket p = new DatagramPacket( data.array(), data.position(),
data.remaining(), address );
// Just queue it up for the kernel threads to write
// out
kernel.enqueueWrite( this, p );
//socket.send(p);
} catch( IOException e ) {
throw new KernelException( "Error sending datagram to:" + address, e );
}
}
public String toString()
{
return "UdpEndpoint[" + id + ", " + address + "]";
}
}
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