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/**
* A network library for processing which supports UDP, TCP and Multicast.
*
* (c) 2004-2012
*
* 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* @author Andreas Schlegel http://www.sojamo.de
* @modified 12/23/2012
* @version 0.9.9
*/
package netP5;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
/**
* @invisible
*/
public abstract class AbstractUdpClient {
protected NetAddress _myNetAddress;
protected DatagramSocket _mySocket;
protected boolean isRunning = false;
/**
* @invisible
*/
public AbstractUdpClient() {
isRunning = openSocket();
}
/**
* @invisible
* @param theAddr String
* @param thePort int
*/
public AbstractUdpClient(String theAddr, int thePort) {
_myNetAddress = new NetAddress(theAddr, thePort);
if(!_myNetAddress.isvalid()) {
Logger.printError("UdpClient", "unknown host " + theAddr);
}
isRunning = openSocket();
}
/**
* get the datagram socket of the UDP client. more info at java.net.DatagramSocket
* @return DatagramSocket
*/
public DatagramSocket socket() {
return _mySocket;
}
private boolean openSocket() {
try {
_mySocket = new DatagramSocket();
}
catch (SocketException e) {
Logger.printError("UdpClient.openSocket", "cant create socket "
+ e.getMessage());
return false;
}
Logger.printProcess("UdpClient.openSocket", "udp socket initialized.");
return true;
}
/**
* send a string using UDP to an already specified RemoteAddress.
* @param theString
*/
public void send(String theString) {
send(theString.getBytes());
}
/**
* send a byte array using UDP to an already specified RemoteAddress.
* @param theBytes byte[]
*/
public void send(byte[] theBytes) {
if (_myNetAddress.isvalid()) {
send(theBytes, _myNetAddress);
}
else {
Logger.printWarning("UdpClient.send",
"no InetAddress and port has been set. Packet has not been sent.");
}
}
/**
* send a byte array to the dedicated remoteAddress.
* @param theBytes
* @param theNetAddress
*/
public void send(final byte[] theBytes,
final NetAddress theNetAddress
) {
if (_myNetAddress.isvalid()) {
send(theBytes, theNetAddress.inetaddress(),theNetAddress.port());
}
}
/**
* send a byte array to the dedicated remoteAddress.
* @param thePacket OscPacket
* @param theAddress String
* @param thePort int
*/
public void send(final byte[] theBytes,
final String theAddress,
final int thePort) {
try {
InetAddress myInetAddress = InetAddress.getByName(theAddress);
send(theBytes, myInetAddress, thePort);
}
catch (UnknownHostException e) {
Logger.printError("UdpClient.send", "while sending to "
+ theAddress + " " + e);
}
}
/**
* @invisible
* @param thePacket DatagramPacket
*/
public void send(DatagramPacket thePacket) {
if (isRunning) {
try {
_mySocket.send(thePacket);
}
catch (IOException e) {
Logger.printError("UdpClient.send",
"ioexception while sending packet. "+e);
}
}
}
/**
* send a byte array to the dedicated remoteAddress.
* @param theBytes byte[]
* @param theAddress InetAddress
* @param thePort int
*/
public void send(final byte[] theBytes,
final InetAddress theAddress,
final int thePort) {
if (isRunning) {
try {
DatagramPacket myPacket = new DatagramPacket(theBytes,theBytes.length, theAddress, thePort);
send(myPacket);
}
catch (NullPointerException npe) {
Logger.printError("UdpClient.send",
"a nullpointer exception occured." + npe);
}
}
else {
Logger.printWarning("UdpClient.send",
"DatagramSocket is not running. Packet has not been sent.");
}
}
}
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