First UDP Program
UDP Server
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
public class UDPServer {
public static void main(String[] agrs)throws IOException
{
try
{
DatagramSocket dsocket=new DatagramSocket(50000);
byte[] buffer=new byte[2048];
DatagramPacket packet = new DatagramPacket(buffer,buffer.length);
while(true){
dsocket.receive(packet);
byte[] bi=packet.getData();
String msg=new String(bi);
System.out.println(msg.trim() + " From port: "+ packet.getPort());
InetAddress address=packet.getAddress();
String msg1="Acknowledged";
DatagramPacket packet1=new DatagramPacket(msg1.getBytes(),msg1.getBytes().length,address,
packet.getPort());
dsocket.send(packet1);
}
} catch(Exception e)
{}
}
}
UDP Client
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
public class UDPClient
{
public static void main(String[] args)
{
try
{
String s1="USER:"+System.getProperty("user.name")+" OS: "+System.getProperty("os.name");
byte[] msg=s1.getBytes();
InetAddress address=InetAddress.getByName("localhost");
DatagramPacket packet=new DatagramPacket(msg,msg.length,address,50000);
DatagramSocket dsocket=new DatagramSocket();
dsocket.send(packet);
byte[] buffer=new byte[2048];
DatagramPacket packet1=new DatagramPacket(buffer, buffer.length);
dsocket.receive(packet1);
byte[] b=packet1.getData();
String msg1=new String(b);
System.out.println("From Server "+msg1);
dsocket.close();
} catch(Exception e) {}
}
}