/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.net.ipv4.udp;
import org.jnode.net.SocketBuffer;
import org.jnode.net.ipv4.IPv4Address;
import org.jnode.net.ipv4.IPv4Constants;
import org.jnode.net.ipv4.IPv4Header;
import org.jnode.net.util.AbstractDatagramSocketImpl;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.ExSocketOptions;
import java.net.InetAddress;
import java.net.SocketException;
/**
* @author epr
* @author Martin Husted Hartvig (hagar@jnode.org)
*/
public class UDPDatagramSocketImpl extends AbstractDatagramSocketImpl implements IPv4Constants,
UDPConstants, ExSocketOptions {
/**
* The UDP protocol we're using
*/
private final UDPProtocol protocol;
/**
* Create a new instance
*
* @param protocol
*/
public UDPDatagramSocketImpl(UDPProtocol protocol) {
this.protocol = protocol;
}
/**
* @see java.net.DatagramSocketImpl#bind(int, java.net.InetAddress)
*/
protected void doBind(int lport, InetAddress laddr) throws SocketException {
protocol.bind(this);
}
/**
* @see java.net.DatagramSocketImpl#close()
*/
protected void doClose() {
protocol.unbind(this);
}
/**
* @see java.net.DatagramSocketImpl#getTTL()
*/
protected byte getTTL() throws IOException {
// TODO Auto-generated method stub
return 0;
}
/**
* @see java.net.DatagramSocketImpl#receive(java.net.DatagramPacket)
*/
protected void onReceive(DatagramPacket p, SocketBuffer skbuf) throws IOException {
final IPv4Header ipHdr = (IPv4Header) skbuf.getNetworkLayerHeader();
final UDPHeader udpHdr = (UDPHeader) skbuf.getTransportLayerHeader();
p.setData(skbuf.toByteArray(), 0, skbuf.getSize());
p.setAddress(ipHdr.getSource().toInetAddress());
p.setPort(udpHdr.getSrcPort());
}
/**
* @see java.net.DatagramSocketImpl#send(java.net.DatagramPacket)
*/
protected void send(DatagramPacket p) throws IOException {
final IPv4Address dstAddress = new IPv4Address(p.getAddress());
final IPv4Header ipHdr;
ipHdr = new IPv4Header(getTos(), getTimeToLive(), IPPROTO_UDP, dstAddress, p.getLength() + UDP_HLEN);
if (!getLocalAddress().isAnyLocalAddress() || (getDevice() != null)) {
ipHdr.setSource(new IPv4Address(getLocalAddress()));
}
final UDPHeader udpHdr;
final int srcPort = getLocalPort();
// final int srcPort = p.getPort(); // or getLocalPort???? TODO Fix
// srcPort issue
udpHdr = new UDPHeader(srcPort, p.getPort(), p.getLength());
final SocketBuffer skbuf = new SocketBuffer(p.getData(), p.getOffset(), p.getLength());
skbuf.setDevice(getDevice());
protocol.send(ipHdr, udpHdr, skbuf);
}
public void setLocalPort(int localPort) {
this.localPort = localPort;
}
/**
* @see java.net.DatagramSocketImpl#setTTL(byte)
*/
protected void setTTL(byte ttl) throws IOException {
// TODO Auto-generated method stub
}
}