complete legacy deletion

projects/Assignments/homework2/MaroonMulticastSenderExample.java

-
-
-
-import java.io.*;
-import java.net.*;
-
-/**
- * Looks a lot like a UDP sender.
- * 
- * @author mcgredo
- */
-public class MaroonMulticastSenderExample {
-
-    public static final String MULTICAST_ADDRESS = "239.1.2.15";
-    public static final int    DESTINATION_PORT = 1717;
-    /** How many routers can be crossed */
-    public static final int TTL = 10; // Time to Live is decrement counter to limit scope
-    
-    public static void main(String[] args) 
-    {
-        try
-        {
-            // This is a java/IPv6 problem. You should also add it to the
-            // arguments used to start the app, eg -Djava.net.preferIPv4Stack=true
-            // set in the "run" section of preferences. Also, typically
-            // netbeans must be restarted after these settings.
-            // https://stackoverflow.com/questions/18747134/getting-cant-assign-requested-address-java-net-socketexception-using-ehcache
-            System.setProperty("java.net.preferIPv4Stack", "true");
-            
-            
-            MulticastSocket multicastSocket = new MulticastSocket(1718);
-            multicastSocket.setTimeToLive(TTL);
-            InetAddress multicastAddress = InetAddress.getByName(MULTICAST_ADDRESS);
-            System.out.println(multicastAddress);            
-            // Join group useful on receiving side
-            multicastSocket.joinGroup(multicastAddress);
-            // You can join multiple groups here
-            
-            // Put together a message with binary content. "ByteArrayOutputStream"
-            // is a java.io utility that lets us put together an array of binary
-            // data, which we put into the UDP packet.
-            
-            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            DataOutputStream dos = new DataOutputStream(baos);
-            dos.writeInt(1);
-            String message = "**********************************";
-            dos.writeInt(message.length());
-            dos.writeChars(message);
-            byte[] buffer = baos.toByteArray();
-            
-            DatagramPacket packet1 = new DatagramPacket(buffer, buffer.length, multicastAddress, DESTINATION_PORT);
-            
-            baos.reset();
-            dos.writeInt(2);
-            message = "<===========================>";
-            
-            dos.writeInt(message.length());
-            dos.writeChars(message);
-            buffer = baos.toByteArray();
-            
-            DatagramPacket packet2 = new DatagramPacket(buffer, buffer.length, multicastAddress, DESTINATION_PORT);
-            
-            
-            // How fast does this go? Does UDP try to slow it down, or does
-            // this cause network problems? (hint: yes for an unlimited send
-            // rate, unlike TCP). How do you know on the receiving side
-            // that you haven't received a duplicate UDP packet, out of
-            // order packet, or dropped packet?
-            
-            for(int idx = 0; idx < 1000; idx++)
-            {
-               
-               multicastSocket.send(packet1);
-               multicastSocket.send(packet2);
-               
-               Thread.sleep(1000); // Send 100, one per second
-               System.out.println("Sent multicast packet " + idx + " of 100");
-            }
-        }
-        catch(Exception e)
-        {
-            System.out.println(e);
-        }
-    }
-    
-}