diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Knobeloch/Knobeloch_PduReceiver.java b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Knobeloch/Knobeloch_PduReceiver.java
new file mode 100644
index 0000000000000000000000000000000000000000..d23bef63de7d55beaca0e06896cfbb937025ba40
--- /dev/null
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Knobeloch/Knobeloch_PduReceiver.java
@@ -0,0 +1,80 @@
+package MV3500Cohort2019JulySeptember.homework4.Knobeloch;
+
+import java.net.*;
+import java.io.*;
+
+import edu.nps.moves.dis7.*;
+import edu.nps.moves.dis7.enumerations.*;
+import edu.nps.moves.dis7.util.*;
+
+public class Knobeloch_PduReceiver
+{
+ public static final int DEFAULT_MULTICAST_PORT = Knobeloch_PduSender.DEFAULT_MULTICAST_PORT;
+ public static final String DEFAULT_MULTICAST_ADDRESS = Knobeloch_PduSender.DEFAULT_MULTICAST_ADDRESS;
+ public static final boolean USE_FAST_ESPDU = false;
+
+ public static void main(String args[])
+ {
+ PduFactory factory;
+ MulticastSocket socket;
+ InetAddress address;
+ DatagramPacket packet;
+
+ try {
+ System.out.println("Knobeloch_PduReceiver started...");
+ if (args.length == 2) {
+ socket = new MulticastSocket(Integer.parseInt(args[0]));
+ address = InetAddress.getByName(args[1]);
+ }
+ else {
+ System.out.println("Usage: AllPduReceiver <port> <multicast group>");
+ System.out.println("Default: AllPduReceiver " + DEFAULT_MULTICAST_PORT + " " + DEFAULT_MULTICAST_ADDRESS);
+ socket = new MulticastSocket(DEFAULT_MULTICAST_PORT);
+ address = InetAddress.getByName(DEFAULT_MULTICAST_ADDRESS);
+ }
+ socket.joinGroup(address);
+
+ factory = new PduFactory();
+
+ while (true) // Loop infinitely, receiving datagrams
+ {
+ byte buffer[] = new byte[1500]; // typical MTU size
+
+ packet = new DatagramPacket(buffer, buffer.length); // reset
+
+ socket.receive(packet);
+
+ Pdu pdu = factory.createPdu(packet.getData());
+ if (pdu != null) {
+ DISPDUType currentPduType = pdu.getPduType(); //short currentPduType = pdu.getPduType();
+ String currentPduTypeName = pdu.getClass().getName();
+ DISProtocolFamily currentProtocolFamilyID = pdu.getProtocolFamily(); //short currentProtocolFamilyID = pdu.getProtocolFamily();
+ //String currentPduFamilyName = pdu.getClass().getSuperclass().getSimpleName();
+
+ StringBuilder message = new StringBuilder();
+ message.append("received DIS PDU ");
+ if (currentPduType.getValue() < 10)
+ message.append(" ");
+ message.append(currentPduType.getValue());
+ String currentPduTypePadded = String.format("%-34s", currentPduType); // - indicates right padding of whitespace
+ message.append(" " ).append(currentPduTypePadded);
+ String currentPduTypeNamePadded = String.format("%-49s", currentPduTypeName); // - indicates right padding of whitespace
+ message.append(" of type ").append(currentPduTypeNamePadded); // package.class name
+ message.append(" (protocolFamily ").append(currentProtocolFamilyID);
+// message.append(" ").append(currentPduFamilyName); // class name is also available
+ message.append(")");
+ System.out.println(message.toString());
+ }
+ else
+ System.out.println("received packet but pdu is null, packet.getData().length=" + packet.getData().length + ", error...");
+ }
+ }
+ catch (IOException e) {
+ System.out.println("Problem with Knobeloch_PduReceiver, see exception trace:");
+ System.out.println(e);
+ }
+ finally {
+ System.out.println("Knobeloch_PduReceiver complete.");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2019JulySeptember/homework4/Knobeloch/Knobeloch_PduSender.java b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Knobeloch/Knobeloch_PduSender.java
new file mode 100755
index 0000000000000000000000000000000000000000..7294c95f1cce104089c272deb54e0cf0efc9d468
--- /dev/null
+++ b/assignments/src/MV3500Cohort2019JulySeptember/homework4/Knobeloch/Knobeloch_PduSender.java
@@ -0,0 +1,172 @@
+package MV3500Cohort2019JulySeptember.homework4.Knobeloch;
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+import edu.nps.moves.dis7.*;
+import edu.nps.moves.dis7.enumerations.*;
+
+/**
+ * This is an example that sends many/most types of PDUs. Useful for testing standards
+ * compliance or getting a full set of PDUs. It also writes the generated PDUs to an XML file.
+ * Adapted from OpenDIS library example package edu.nps.moves.examples
+ *
+ * @author DMcG
+ * @version $Id:$
+ */
+public class Knobeloch_PduSender
+{
+ /** Default multicast group address we send on. */
+ public static final String DEFAULT_MULTICAST_ADDRESS = "239.1.2.3";
+
+ /** Default multicast port used, matches Wireshark DIS capture default */
+ public static final int DEFAULT_MULTICAST_PORT = 3000;
+
+ private int port;
+ InetAddress multicastAddress;
+
+ public Knobeloch_PduSender(int port, String multicast) {
+ try
+ {
+ this.port = port;
+ multicastAddress = InetAddress.getByName(multicast);
+ if (!multicastAddress.isMulticastAddress())
+ {
+ System.out.println("Not a multicast address: " + multicast);
+ }
+ }
+ catch (UnknownHostException e) {
+ System.out.println("Unable to open socket: " + e);
+ }
+ }
+
+ public void run(int numbOfPDUS)
+ {
+ System.out.println("DisExamplesOpenDis7.AllPduSender started...");
+ System.out.println("Generate PDUs and note issues, if any...");
+
+ List<Pdu> generatedPdusList = createPDU(numbOfPDUS);
+
+ // Send the PDUs we created
+ System.out.println("Send the " + generatedPdusList.size() + " PDUs we created...");
+
+ try
+ {
+ InetAddress localMulticastAddress = InetAddress.getByName(DEFAULT_MULTICAST_ADDRESS);
+ MulticastSocket socket = new MulticastSocket(DEFAULT_MULTICAST_PORT);
+ socket.joinGroup(localMulticastAddress);
+
+ for (int idx = 0; idx < generatedPdusList.size(); idx++)
+ {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ DataOutputStream dos = new DataOutputStream(baos);
+ byte[] buffer;
+
+ Pdu aPdu = generatedPdusList.get(idx);
+ aPdu.marshal(dos);
+
+ buffer = baos.toByteArray();
+ DatagramPacket packet = new DatagramPacket(buffer, buffer.length, localMulticastAddress, DEFAULT_MULTICAST_PORT);
+ socket.send(packet);
+ try {
+ Thread.sleep(100L);
+ } catch (InterruptedException ex) {
+ }
+ String currentPduTypeValuePadded = String.format("%2s", aPdu.getPduType().getValue());
+ String currentPduTypePadded = String.format("%-34s", aPdu.getPduType()); // - indicates right padding of whitespace
+ System.out.print ("Sent DIS PDU " + currentPduTypeValuePadded + " " + currentPduTypePadded );
+ System.out.println(" of type " + aPdu.getClass().getName());
+ }
+ }
+ catch (IOException e)
+ {
+ System.out.println(e);
+ }
+ }
+
+ public static void main(String args[])
+ {
+ if (args.length == 2)
+ {
+ Knobeloch_PduSender sender = new Knobeloch_PduSender(Integer.parseInt(args[0]), args[1]);
+ sender.run(5);
+ }
+ else
+ {
+ System.out.println("Usage: AllPduSender <port> <multicast group>");
+ System.out.println("Default: AllPduSender " + DEFAULT_MULTICAST_PORT + " " + DEFAULT_MULTICAST_ADDRESS);
+ Knobeloch_PduSender sender = new Knobeloch_PduSender(DEFAULT_MULTICAST_PORT, DEFAULT_MULTICAST_ADDRESS);
+ sender.run(5);
+ }
+ System.out.println("Knobeloch_PduSender complete.");
+ }
+
+ private List<Pdu> createPDU(int numbOfPDUs)
+ {
+ List<Pdu> list = new ArrayList<>();
+ List<Short> entityIDs = new ArrayList<>();
+ Random r = new Random();
+
+ //generate Entity ID (no douplications)
+ for (int i = 0; i < numbOfPDUs; i++)
+ {
+ short temp = (short) r.nextInt();
+ while (entityIDs.contains(temp))
+ {
+ temp = (short) r.nextInt();
+ }
+ entityIDs.add(temp);
+ }
+
+ //
+ for (int i = 0; i < numbOfPDUs; i++){
+ EntityStatePdu myPdu = new EntityStatePdu();
+
+ //ID
+ EntityID tempID = new EntityID();
+ tempID.setEntityID(entityIDs.get(i));
+ myPdu.setEntityID(tempID);
+
+ //Enemy or Friend
+ myPdu.setForceId(ForceID.FRIENDLY);
+
+ //location
+ Vector3Double tempLoc = new Vector3Double();
+ tempLoc.setX(r.nextInt(1000) + r.nextDouble());
+ tempLoc.setY(r.nextInt(1000) + r.nextDouble());
+ tempLoc.setZ(r.nextInt(1000) + r.nextDouble());
+
+ myPdu.setEntityLocation(tempLoc);
+
+ //orientation
+ EulerAngles tempOri = new EulerAngles();
+ tempOri.setPhi(r.nextFloat());
+ tempOri.setPsi(r.nextFloat());
+ tempOri.setTheta(r.nextFloat());
+
+ myPdu.setEntityOrientation(tempOri);
+
+
+ //velocity
+ Vector3Double tempVel = new Vector3Double();
+ tempVel.setX(r.nextDouble());
+ tempVel.setY(r.nextDouble());
+ tempVel.setZ(r.nextDouble());
+
+ myPdu.setEntityLocation(tempVel);
+
+
+// Category? Country? Domain?...
+// EntityType tempType = new EntityType();
+// tempType.set
+// myPdu.setEntityType(tempType)
+
+ list.add(myPdu);
+ }
+
+
+ return list;
+ }
+}
+