Outubro 2008
Prof. Ismael H. F. Santos
- ismael@tecgraf.puc-rio.br
2
UDP server
repeatedly receives a request and sends it
back to the client
import java.net.*;
import java.io.*;
public
class UDPServer{
public static void main(String args[]){
DatagramSocket aSocket = null;
try{
aSocket = new DatagramSocket(6789);
byte[] buffer = new byte[1000];
while(true){
DatagramPacket request = new
DatagramPacket(buffer, buffer.length);
aSocket.receive(request);
DatagramPacket reply = new
DatagramPacket(request.getData(),
request.getLength(), request.getAddress(), request.getPort());
aSocket.send(reply);
}
}catch (SocketException
e){System.out.println("Socket: " + e.getMessage());
}catch (IOException e)
{System.out.println("IO: " + e.getMessage());}
}finally {if(aSocket != null)
aSocket.close();}
}
}