From a4e92770255aaa143b5f12828acfc623c3bc5cd6 Mon Sep 17 00:00:00 2001
From: "Islas, Sean (Capt)" <sean.islas@nps.edu>
Date: Mon, 1 May 2023 10:55:26 -0700
Subject: [PATCH] Delete HW2.java
---
.../homework2/Islas/HW2.java | 117 ------------------
1 file changed, 117 deletions(-)
delete mode 100644 assignments/src/MV3500Cohort2023MarchJune/homework2/Islas/HW2.java
diff --git a/assignments/src/MV3500Cohort2023MarchJune/homework2/Islas/HW2.java b/assignments/src/MV3500Cohort2023MarchJune/homework2/Islas/HW2.java
deleted file mode 100644
index 524ca4a85a..0000000000
--- a/assignments/src/MV3500Cohort2023MarchJune/homework2/Islas/HW2.java
+++ /dev/null
@@ -1,117 +0,0 @@
-package MV3500Cohort2023MarchJune.homework2.Islas;
-
-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 collision complaints from the localhost.
- *
- * Start this before launching UdpSender.
- *
- * @see <a href="https://docs.oracle.com/javase/tutorial/networking/datagrams/index.html">https://docs.oracle.com/javase/tutorial/networking/datagrams/index.html</a>
- * @see <a href="https://docs.oracle.com/javase/tutorial/essential/io/datastreams.html">https://docs.oracle.com/javase/tutorial/essential/io/datastreams.html</a>
- * @see <a href="https://en.wikipedia.org/wiki/User_Datagram_Protocol">https://en.wikipedia.org/wiki/User_Datagram_Protocol</a>
- * @author mcgredo
- * @author brutzman@nps.edu
- */
-public class UnicastUdpReceiver
-{
- /** Default constructor */
- public UnicastUdpReceiver()
- {
- // default constructor
- }
-// public static final int SENDING_PORT = 1414; // port used by UdpSender, unneeded here
- /** socket value of shared interest */
- public static final int UDP_PORT = 1415; // sharable
- /** socket value of shared interest */
- public static final String DESTINATION_HOST = "localhost";
-
- /**
- * Program invocation, execution starts here
- * @param args command-line arguments
- */
- public static void main(String[] args)
- {
- DatagramSocket udpSocket = null;
-
- try
- {
- // System.out.println(UnicastUdpReceiver.class.getName() + " started...");
- System.out.println("What is the airspeed velocity of an unladen Swallow?");
-
- // Create a UDP socket
- udpSocket = new DatagramSocket(UDP_PORT);
- udpSocket.setReceiveBufferSize(1500); // how many bytes are in buffer? MTU=1500 is good
- udpSocket.setBroadcast(false); // we're just receiving here
-// udpSocket.setReuseAddress(true);
-
- byte[] byteArray = new byte[1500];
- DatagramPacket receivePacket = new DatagramPacket(byteArray, byteArray.length);
-
- ByteArrayInputStream bais = new ByteArrayInputStream(byteArray);
- DataInputStream dis = new DataInputStream(bais);
-
- // boolean isEvenParity;
- int packetCount = 0;
- int firstInt;
- // float secondFloat;
- // String thirdString;
- // String padding;
-
- // You need a new receiving packet to read from every packet received
- while (true)
- {
- packetCount++; // good practice to increment counter at start of loop, when possible
- udpSocket.receive(receivePacket); // blocks until packet is received
-
- if (packetCount == 1)
- {
- if (udpSocket.getInetAddress() == null)
- System.out.println("UdpReceiver address/port: UDP socket address null (loopback)" + "/" + UDP_PORT);
- else System.out.println("UdpReceiver address/port: " + udpSocket.getInetAddress().getHostAddress() + "/" + UDP_PORT);
- }
-
- // values of interest follow. order and types of what was sent must match what you are reading!
- firstInt = dis.readInt(); // packetID
- // secondFloat = dis.readFloat();
- // thirdString = dis.readUTF(); // string value with guaranteed encoding, matches UTF-8 is 8 bit
- // isEvenParity = dis.readBoolean(); // ok, we've gotten everything we're looking for.
-
- dis.reset(); // now clear the input stream after reading, in preparation for next loop
-
- // if (isEvenParity)
- // padding = " ";
- // else padding = "";
-
- if (firstInt == 11) {
- System.out.println("You may pass");
- }
- else {
- System.out.println("Pull the lever!");
- }
-
- // System.out.println("[" + UnicastUdpReceiver.class.getName() + "]" +
- // " port=" + UDP_PORT +
- // " packetID=" + firstInt + // have output message use same name as sender
- // ", second float value=" + secondFloat +
- // ", third String value=\"" + thirdString + "\"" + // note that /" is literal quote character
- // " isPacketIdEvenParity=" + isEvenParity + "," + padding +
- // " packet counter=" + packetCount);
- }
- }
- catch(IOException e)
- {
- System.err.println("Problem with UdpReceiver, see exception trace:");
- System.err.println(e);
- }
- finally // clean up prior to exit, don't want to leave behind zombie socket
- {
- if (udpSocket != null)
- udpSocket.close();
- System.out.println(UnicastUdpReceiver.class.getName() + " complete."); // all done
- }
- }
-}
--
GitLab