Hw3 submission

deliverables/src/MV3500Cohort2018JulySeptember/homework3/Jackson_UdpReceiver.java

+package MV3500Cohort2018JulySeptember.homework3;
+
+import java.io.*;
+import java.net.*;
+/**
+ * An example of receiving UDP packets. Since very often both the
+ * sender and receiver are on the same host we use different ports
+ * for each. This prevents complaints from the localhost.
+ * 
+ * @author mcgredo
+ */
+public class Jackson_UdpReceiver 
+{
+    public static final int       SENDING_PORT = 1414;
+    public static final int     RECEIVING_PORT = 1415;
+    public static final String DESINATION_HOST = "localhost";
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) 
+    {
+        try
+        {
+            System.out.println("UdpReceiver started...");
+            // Create a UDP socket
+            DatagramSocket udpSocket = new DatagramSocket(RECEIVING_PORT);
+            
+            // You need a new receiving packet to read from every packet received
+            while (true)
+            {
+                byte[] receiveBuffer = new byte[15000];
+                DatagramPacket receivePacket = new DatagramPacket(receiveBuffer, receiveBuffer.length);
+                udpSocket.receive(receivePacket);
+                
+                // Decode the contents by extracting the data from the packet
+                ByteArrayInputStream bais = new ByteArrayInputStream(receivePacket.getData());
+                DataInputStream dis = new DataInputStream(bais);
+                
+                // What happens if you read an integer? Two double values? ***
+                String first = dis.readUTF(); // alternatives: readFloat(); readInt(); dis.readUTF(); 
+                //String second = dis.readUTF();
+                System.out.println(first);// + " second value: " + second);
+            }
+        }
+        catch(IOException e)
+        {
+            System.out.println("Problem with UdpReceiver, see exception trace:");
+            System.out.println(e);
+        }
+    }
+}