THMMY.gr

InetAddress remoteAddress = InetAddress.getByName("79.103.252.233"); //i ip p m dinei
DatagramSocket socket=new DatagramSocket(48020); //clientport
DatagramPacket packet=new DatagramPacket(buf,50,remoteAddress,38020); //serverport, to buf einai ena byte[50] array

socket.connect(remoteAddress, 38020);
String code=new String("E2685");
buf=code.getBytes();
socket.send(packet);
System.out.println("packet sent");
socket.receive(packet);
System.out.println("packet received");

echo_request_code=E2685

InetAddress address = InetAddress.getByName( "155.207.18.208" );

DatagramSocket  ithaki = new DatagramSocket( );		
ithaki.connect(address, SERVER_PORT );

DatagramSocket client = new DatagramSocket( CLIENT_PORT );
		
byte[] buffer = ( "echo_request_code=ΕΧΧΧΧ" ).getBytes();
DatagramPacket p = new DatagramPacket( buffer, buffer.length );
ithaki.send(p);

buffer = new byte[4096];
p = new DatagramPacket( buffer, buffer.length );
client.receive(p);
System.out.println( new String( buffer ) );

                byte[] sendbuff=new byte[50];
		byte[] recvbuff=new byte[50];
		
		InetAddress localAddress = InetAddress.getByName("localhost");
		InetAddress remoteAddress = InetAddress.getByName("ithaki.eng.auth.gr");
		
		DatagramSocket sendSocket=new DatagramSocket();
		DatagramSocket recvSocket=new DatagramSocket(48026, localAddress);
		DatagramPacket sendPacket=new DatagramPacket(sendbuff,sendbuff.length,remoteAddress,38026);
		DatagramPacket recvPacket=new DatagramPacket(recvbuff,recvbuff.length);
		
		sendSocket.connect(remoteAddress, 38026);
		
		String code=new String("echo_request_code=E2940");
		sendbuff=code.getBytes();
		sendPacket.setData(sendbuff);
		sendSocket.send(sendPacket);
		System.out.println("packet sent size:"+sendPacket.getLength());
		
		recvSocket.receive(recvPacket);
		System.out.println("packet received");

		sendSocket.close();
		recvSocket.close();

byte[] sound=new byte[5*32*128];
AudioFormat audioformat=new AudioFormat(8000,8,1,true,false);
SourceDataLine dataline=AudioSystem.getSourceDataLine(audioformat);
dataline.open(audioformat,5*32*128);
dataline.write(sound,0,5*32*128);

byte msb=(byte) ((recvbuff[i]>> 4)&0x0F-8);
byte lsb=(byte) (recvbuff[i]&0x0F-8);

r.receive(q);

for(int i=0;i<q.getLength();i++) {

<όνομα του outputstream>.write(rxbuffer[i]);
}

byte[] buffer = new byte[ BUFFER_SIZE ];
client.receive(p);
byte[] response = new byte[ p.getLength() ]; 
System.arraycopy( buffer, 0, response, 0, p.getLength() );
//return response; //ή οτιδήποτε αλλο