diff --git a/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/Assignment1Client.java b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/Assignment1Client.java
new file mode 100644
index 0000000000000000000000000000000000000000..51068eb7a7e5e9fc730d2bac97e2ff5f9744d2c2
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/Assignment1Client.java
@@ -0,0 +1,104 @@
+package MV3500Cohort2023MarchJune.Chojnacki;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * This is Assignment 1 where I have modified the given code from TCPExample3Client
+ * -sleep time has been extended to give more time in between loops
+ * -Initial print line has been altered to reflect assingnment 1
+ * -Loop only runs a finite number of times ,10.
+ * Before, we always used telnet (netcat) to connect to the server. Here we are
+ * now writing our own program to do the connection.
+ *
+ * As you will see, when we run this after we start the server we will see the
+ * same string telnet printed, sent by the server. The output at the server will
+ * show different socket pairs for each time the loop iterates.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class Assignment1Client
+{
+ /** Default constructor */
+ public Assignment1Client()
+ {
+ // default constructor
+ }
+ /** IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+ * @see <a href="https://en.wikipedia.org/wiki/localhost">https://en.wikipedia.org/wiki/localhost</a>
+ * @see <a href="https://en.wikipedia.org/wiki/IPv6_address">https://en.wikipedia.org/wiki/IPv6_address</a>
+ */
+ public final static String LOCALHOST = "0:0:0:0:0:0:0:1";
+
+ /**
+ * Program invocation, execution starts here
+ * @param args command-line arguments
+ */
+ public static void main(String[] args)
+ {
+ // Local variables/fields
+ Socket socket = null;
+ InputStream is;
+ Reader isr;
+ BufferedReader br;
+ String serverMessage;
+ int clientLoopCount = 0;
+ int numberOfLoops = 10;
+
+ try {
+ while (clientLoopCount < numberOfLoops)
+ {
+ clientLoopCount++; // increment at beginning of loop for reliability
+ System.out.println(Assignment1Client.class.getName() + " creating socket...");
+
+ // We request an IP to connect to ("localhost") and
+ // port number at that IP (2317). This establishes
+ // a connection to that IP in the form of a Socket
+ // object; the server uses a ServerSocket to wait for
+ // connections.
+ socket = new Socket(LOCALHOST, 2317); // locohost?
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ is = socket.getInputStream();
+ isr = new InputStreamReader(is);
+ br = new BufferedReader(isr);
+
+ // Read a single line written by the server. We'd
+ // do things a bit differently if there were many lines to be read
+ // from the server instead of one only.
+ serverMessage = br.readLine();
+ System.out.println("======================Assignment1===========================");
+
+ System.out.print ("Client loop " + clientLoopCount + ": ");
+ System.out.println("We are connected to the server!");
+ System.out.println("The message the server sent was: '" + serverMessage + "'");
+ // socket gets closed, either automatically/silently by this code (or possibly by the server)
+
+ Thread.sleep(800l); // slow things down, for example 500l (long) = 500 msec
+
+ } // end while(true) // infinite loops are dangerous, be sure to kill this process!
+ }
+ catch (IOException | InterruptedException e)
+ {
+ System.err.println("Problem with " + TcpExample3Client.class.getName() + " networking:"); // describe what is happening
+ System.err.println("Error: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ finally // occurs after any other activity when shutting down
+ {
+ try {
+ if (socket != null)
+ socket.close();
+ } catch (IOException e) {}
+
+ // program exit: tell somebody about that happening. Likely cause: server drops connection.
+ System.out.println();
+ System.out.println(TcpExample3Client.class.getName() + " exit");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/Assignment1Server.java b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/Assignment1Server.java
new file mode 100644
index 0000000000000000000000000000000000000000..c4eb72804cb0d9712064e4ff163bc02fe839ac3d
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/Assignment1Server.java
@@ -0,0 +1,115 @@
+package MV3500Cohort2023MarchJune.Chojnacki;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * This is Assignment 1 where I have modified the given code from TCPExample3Server
+ *-server response message changed
+ *
+ * Very slightly more complex than example1, further modifying example2. The
+ * only thing this does differently is introduce a loop into the response, so
+ * you don't have to restart the program after one response. Also, it prints out
+ * the socket pair the server sees. Run the program via telnet several times and
+ * compare the socket pairs.
+ *
+ * telnet (nc) localhost 2317
+ *
+ * If you're sophisticated you can contact the instructor's computer while
+ * running this program.
+ *
+ * telnet (nc) [ipNumberOfServerLaptop] 2317
+ *
+ * and have the instructor display the socket pairs received.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class Assignment1Server
+{
+ /** Default constructor */
+ public Assignment1Server()
+ {
+ // default constructor
+ }
+ /**
+ * Program invocation, execution starts here
+ * If already compiled, can run using console in directory ../../build/classes/ by invoking \
+ * java -classpath . TcpExamples.TcpExample3Server
+ * @param args command-line arguments
+ */
+ public static void main(String[] args) {
+ try {
+
+ // ServerSocket waits for a connection from a client.
+ // Notice that it is outside the loop; ServerSocket
+ // needs to be made only once.
+ System.out.println(Assignment1Server.class.getName() + " has started..."); // it helps debugging to put this on console first
+
+ ServerSocket serverSocket = new ServerSocket(2317);
+ OutputStream os;
+ PrintStream ps;
+ InetAddress localAddress, remoteAddress;
+ int localPort, remotePort;
+ int serverLoopCount = 0;
+
+ int numberOfRequests = 0;
+
+ // Server is up and waiting (i.e. "blocked" or paused)
+ // Loop, infinitely, waiting for client connections.
+ // Stop the program somewhere else.
+ while (numberOfRequests < 10) {
+
+ // block until connected to a client
+ try (Socket clientConnectionSocket = serverSocket.accept())
+ {
+ serverLoopCount++; // increment at beginning of loop for reliability
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ os = clientConnectionSocket.getOutputStream();
+ ps = new PrintStream(os);
+ ps.println("This is response " + serverLoopCount + " produced by the server, "
+ + Assignment1Server.class.getName()); // this gets sent back to client!
+
+ // Print some information locally about the Socket connection.
+ // This includes the port and IP numbers on both sides (the socket pair).
+ localAddress = clientConnectionSocket.getLocalAddress();
+ remoteAddress = clientConnectionSocket.getInetAddress();
+ localPort = clientConnectionSocket.getLocalPort();
+ remotePort = clientConnectionSocket.getPort();
+
+ System.out.print ("Server loop " + serverLoopCount + ": ");
+
+ // My socket pair connection looks like this, to localhost:
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54876 ))
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54881 ))
+
+ // Why is the first IP/port the same, while the second set has different ports?
+ System.out.println(TcpExample3Server.class.getName() + " socket pair showing host name, address, port:");
+ System.out.println(" (( " +
+ localAddress.getHostName() + "=" + localAddress.getHostAddress() + ", " + localPort + " ), ( " +
+ remoteAddress.getHostName() + "=" + remoteAddress.getHostAddress() + ", " + remotePort + " ))");
+
+ if ( localAddress.getHostName().equals( localAddress.getHostAddress()) ||
+ remoteAddress.getHostName().equals(remoteAddress.getHostAddress()))
+ System.out.println(" note HostName matches address if host has no DNS name");
+
+ // Notice the use of flush() and try w/ resources. Without
+ // the try w/ resources the Socket object may stay open for
+ // a while after the client has stopped needing this
+ // connection. try w/ resources explicitly ends the connection.
+ ps.flush();
+ // like it or not, you're outta here!
+ }
+ numberOfRequests++;
+ }
+ } catch (IOException e) {
+ System.err.println("Problem with " + TcpExample3Server.class.getName() + " networking: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/TcpExample3Client.java b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/TcpExample3Client.java
new file mode 100644
index 0000000000000000000000000000000000000000..a3b7cfe3b4cdc9ec1986c5efd1b268c50c72d12f
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/TcpExample3Client.java
@@ -0,0 +1,100 @@
+package MV3500Cohort2023MarchJune.Chojnacki;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * Before, we always used telnet (netcat) to connect to the server. Here we are
+ * now writing our own program to do the connection.
+ *
+ * As you will see, when we run this after we start the server we will see the
+ * same string telnet printed, sent by the server. The output at the server will
+ * show different socket pairs for each time the loop iterates.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class TcpExample3Client
+{
+ /** Default constructor */
+ public TcpExample3Client()
+ {
+ // default constructor
+ }
+
+ /** IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+ * @see <a href="https://en.wikipedia.org/wiki/localhost">https://en.wikipedia.org/wiki/localhost</a>
+ * @see <a href="https://en.wikipedia.org/wiki/IPv6_address">https://en.wikipedia.org/wiki/IPv6_address</a>
+ */
+ public final static String LOCALHOST = "0:0:0:0:0:0:0:1"; //Local host
+
+ /**
+ * Program invocation, execution starts here
+ * @param args command-line arguments
+ */
+ public static void main(String[] args)
+ {
+ // Local variables/fields
+ Socket socket = null;
+ InputStream is;
+ Reader isr;
+ BufferedReader br;
+ String serverMessage;
+ int clientLoopCount = 0;
+
+ try {
+ while (true)
+ {
+ clientLoopCount++; // increment at beginning of loop for reliability
+ System.out.println(TcpExample3Client.class.getName() + " creating socket...");
+
+ // We request an IP to connect to ("localhost") and
+ // port number at that IP (2317). This establishes
+ // a connection to that IP in the form of a Socket
+ // object; the server uses a ServerSocket to wait for
+ // connections.
+ socket = new Socket(LOCALHOST, 2317); // locohost?
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ is = socket.getInputStream();
+ isr = new InputStreamReader(is);
+ br = new BufferedReader(isr);
+
+ // Read a single line written by the server. We'd
+ // do things a bit differently if there were many lines to be read
+ // from the server instead of one only.
+ serverMessage = br.readLine();
+ System.out.println("==================================================");
+
+ System.out.print ("Client loop " + clientLoopCount + ": ");
+ System.out.println("now we're talking!");
+ System.out.println("The message the server sent was: '" + serverMessage + "'");
+ // socket gets closed, either automatically/silently by this code (or possibly by the server)
+
+ Thread.sleep(500l); // slow things down, for example 500l (long) = 500 msec (1/2 second)
+
+ } // end while(true) // infinite loops are dangerous, be sure to kill this process!
+ }
+ catch (IOException | InterruptedException e )
+ {
+ System.err.println("Problem with " + TcpExample3Client.class.getName() + " networking:"); // describe what is happening
+ System.err.println("Error: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ finally // occurs after any other activity when shutting down
+ {
+ try {
+ if (socket != null)
+ socket.close();
+ } catch (IOException e) {}
+
+ // program exit: tell somebody about that happening. Likely cause: server drops connection.
+ System.out.println();
+ System.out.println(TcpExample3Client.class.getName() + " exit");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/TcpExample3Server.java b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/TcpExample3Server.java
new file mode 100644
index 0000000000000000000000000000000000000000..7ff4105a9a3722a48ecd348a98db5cfa515e9704
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/Chojnacki/TcpExample3Server.java
@@ -0,0 +1,108 @@
+package MV3500Cohort2023MarchJune.Chojnacki;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * Very slightly more complex than example1, further modifying example2. The
+ * only thing this does differently is introduce a loop into the response, so
+ * you don't have to restart the program after one response. Also, it prints out
+ * the socket pair the server sees. Run the program via telnet several times and
+ * compare the socket pairs.
+ *
+ * telnet (nc) localhost 2317
+ *
+ * If you're sophisticated you can contact the instructor's computer while
+ * running this program.
+ *
+ * telnet (nc) [ipNumberOfServerLaptop] 2317
+ *
+ * and have the instructor display the socket pairs received.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class TcpExample3Server
+{
+ /** Default constructor */
+ public TcpExample3Server()
+ {
+ // default constructor
+ }
+
+ /**
+ * Program invocation, execution starts here
+ * If already compiled, can run using console in directory ../../build/classes/ by invoking \
+ * java -classpath . TcpExamples.TcpExample3Server
+ * @param args command-line arguments
+ */
+ public static void main(String[] args) {
+ try {
+
+ // ServerSocket waits for a connection from a client.
+ // Notice that it is outside the loop; ServerSocket
+ // needs to be made only once.
+ System.out.println(TcpExample3Server.class.getName() + " has started..."); // it helps debugging to put this on console first
+
+ ServerSocket serverSocket = new ServerSocket(2317);
+ OutputStream os;
+ PrintStream ps;
+ InetAddress localAddress, remoteAddress;
+ int localPort, remotePort;
+ int serverLoopCount = 0;
+
+ // Server is up and waiting (i.e. "blocked" or paused)
+ // Loop, infinitely, waiting for client connections.
+ // Stop the program somewhere else.
+ while (true) {
+
+ // block until connected to a client
+ try (Socket clientConnectionSocket = serverSocket.accept())
+ {
+ serverLoopCount++; // increment at beginning of loop for reliability
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ os = clientConnectionSocket.getOutputStream();
+ ps = new PrintStream(os);
+ ps.println("This is response " + serverLoopCount + " produced by the server."); // this gets sent back to client!
+
+ // Print some information locally about the Socket connection.
+ // This includes the port and IP numbers on both sides (the socket pair).
+ localAddress = clientConnectionSocket.getLocalAddress();
+ remoteAddress = clientConnectionSocket.getInetAddress();
+ localPort = clientConnectionSocket.getLocalPort();
+ remotePort = clientConnectionSocket.getPort();
+
+ System.out.print ("Server loop " + serverLoopCount + ": ");
+
+ // My socket pair connection looks like this, to localhost:
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54876 ))
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54881 ))
+
+ // Why is the first IP/port the same, while the second set has different ports?
+ System.out.println(TcpExample3Server.class.getName() + " socket pair showing host name, address, port:");
+ System.out.println(" (( " +
+ localAddress.getHostName() + "=" + localAddress.getHostAddress() + ", " + localPort + " ), ( " +
+ remoteAddress.getHostName() + "=" + remoteAddress.getHostAddress() + ", " + remotePort + " ))");
+
+ if ( localAddress.getHostName().equals( localAddress.getHostAddress()) ||
+ remoteAddress.getHostName().equals(remoteAddress.getHostAddress()))
+ System.out.println(" note HostName matches address if host has no DNS name");
+ // Notice the use of flush() and try w/ resources. Without
+ // the try w/ resources the Socket object may stay open for
+ // a while after the client has stopped needing this
+ // connection. try w/ resources explicitly ends the connection.
+ ps.flush();
+ // like it or not, you're outta here!
+ }
+ }
+ } catch (IOException e) {
+ System.err.println("Problem with " + TcpExample3Server.class.getName() + " networking: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/homework1/Chojnacki/Assignment1Client.java b/assignments/src/MV3500Cohort2023MarchJune/homework1/Chojnacki/Assignment1Client.java
index 51e9bee475a11fff80faca8b6987b8fc8dce500a..709bd3c81f3c1d5742b976473f40c16fe5e32961 100644
--- a/assignments/src/MV3500Cohort2023MarchJune/homework1/Chojnacki/Assignment1Client.java
+++ b/assignments/src/MV3500Cohort2023MarchJune/homework1/Chojnacki/Assignment1Client.java
@@ -4,9 +4,10 @@ import java.io.*;
import java.net.*;
/**
+ * Test
* This is Assignment 1 where I have modified the given code from TCPExample3Client
* -sleep time has been extended to give more time in between loops
- * -Initial print line has been altered to reflect assingnment 1
+ * -Initial print line has been altered to reflect assignment 1
* -Loop only runs a finite number of times ,10.
* Before, we always used telnet (netcat) to connect to the server. Here we are
* now writing our own program to do the connection.
diff --git a/assignments/src/MV3500Cohort2023MarchJune/homework1/Islas/HW1Client.java b/assignments/src/MV3500Cohort2023MarchJune/homework1/Islas/HW1Client.java
new file mode 100644
index 0000000000000000000000000000000000000000..6f01a415ef58601caa648ca9746f45d69ffe66e0
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/homework1/Islas/HW1Client.java
@@ -0,0 +1,116 @@
+package MV3500Cohort2023MarchJune.homework1.Islas;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * Before, we always used telnet (netcat) to connect to the server. Here we are
+ * now writing our own program to do the connection.
+ *
+ * As you will see, when we run this after we start the server we will see the
+ * same string telnet printed, sent by the server. The output at the server will
+ * show different socket pairs for each time the loop iterates.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class HW1Client {
+ /** Default constructor */
+ public HW1Client()
+ {
+ // default constructor
+ }
+
+ /** IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+ * @see <a href="https://en.wikipedia.org/wiki/localhost">https://en.wikipedia.org/wiki/localhost</a>
+ * @see <a href="https://en.wikipedia.org/wiki/IPv6_address">https://en.wikipedia.org/wiki/IPv6_address</a>
+ */
+ public final static String LOCALHOST = "0:0:0:0:0:0:0:1"; //Local host
+
+ /**
+ * Program invocation, execution starts here
+ * @param args command-line arguments
+ */
+ public static void main(String[] args)
+ {
+ // Local variables/fields
+ Socket socket = null;
+ InputStream is;
+ Reader isr;
+ BufferedReader br;
+ String serverMessage;
+ int clientLoopCount = 0;
+
+ try {
+ while (true)
+ {
+ clientLoopCount++; // increment at beginning of loop for reliability
+ // System.out.println(HW1Client.class.getName() + " creating socket...");
+
+ // We request an IP to connect to ("localhost") and
+ // port number at that IP (2317). This establishes
+ // a connection to that IP in the form of a Socket
+ // object; the server uses a ServerSocket to wait for
+ // connections.
+ socket = new Socket(LOCALHOST, 2317); // locohost?
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ is = socket.getInputStream();
+ isr = new InputStreamReader(is);
+ br = new BufferedReader(isr);
+
+ // Read a single line written by the server. We'd
+ // do things a bit differently if there were many lines to be read
+ // from the server instead of one only.
+ serverMessage = br.readLine();
+ // System.out.println("==================================================");
+
+ // First pose
+ if (clientLoopCount % 2 == 0) {
+ System.out.println(" O/ "); // head
+ System.out.println(" /| "); // arms
+ System.out.println(" /_\\ "); // legs
+ System.out.println(" | | "); // torso
+ System.out.println();
+ }
+
+ // Second pose
+ else {
+ System.out.println(" \\O "); // head
+ System.out.println(" |\\ "); // arms
+ System.out.println(" /_\\ "); // legs
+ System.out.println(" | | "); // torso
+ System.out.println();
+ }
+ // System.out.print ("Client loop " + clientLoopCount + ": ");
+ // System.out.println("now we're talking!");
+ // System.out.println("The message the server sent was: '" + serverMessage + "'");
+ // socket gets closed, either automatically/silently by this code (or possibly by the server)
+
+ Thread.sleep(500l); // slow things down, for example 500l (long) = 500 msec (1/2 second)
+
+ } // end while(true) // infinite loops are dangerous, be sure to kill this process!
+ }
+ catch (IOException | InterruptedException e )
+ {
+ System.err.println("Problem with " + HW1Client.class.getName() + " networking:"); // describe what is happening
+ System.err.println("Error: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ finally // occurs after any other activity when shutting down
+ {
+ try {
+ if (socket != null)
+ socket.close();
+ } catch (IOException e) {}
+
+ // program exit: tell somebody about that happening. Likely cause: server drops connection.
+ System.out.println();
+ System.out.println(HW1Client.class.getName() + " exit");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/homework1/Islas/HW1Server.java b/assignments/src/MV3500Cohort2023MarchJune/homework1/Islas/HW1Server.java
new file mode 100644
index 0000000000000000000000000000000000000000..d9619b9c7a2125808cc9f63a8cd6c49cfb110a3a
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/homework1/Islas/HW1Server.java
@@ -0,0 +1,131 @@
+package MV3500Cohort2023MarchJune.homework1.Islas;
+
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * Very slightly more complex than example1, further modifying example2. The
+ * only thing this does differently is introduce a loop into the response, so
+ * you don't have to restart the program after one response. Also, it prints out
+ * the socket pair the server sees. Run the program via telnet several times and
+ * compare the socket pairs.
+ *
+ * telnet (nc) localhost 2317
+ *
+ * If you're sophisticated you can contact the instructor's computer while
+ * running this program.
+ *
+ * telnet (nc) [ipNumberOfServerLaptop] 2317
+ *
+ * and have the instructor display the socket pairs received.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class HW1Server {
+ /** Default constructor */
+ public HW1Server()
+ {
+ // default constructor
+ }
+
+ /**
+ * Program invocation, execution starts here
+ * If already compiled, can run using console in directory ../../build/classes/ by invoking \
+ * java -classpath . TcpExamples.TcpExample3Server
+ * @param args command-line arguments
+ */
+
+ public static void main(String[] args) {
+ try {
+
+ // ServerSocket waits for a connection from a client.
+ // Notice that it is outside the loop; ServerSocket
+ // needs to be made only once.
+ // System.out.println(HW1Server.class.getName() + " has started..."); // it helps debugging to put this on console first
+ System.out.println("May I have this dance?");
+ ServerSocket serverSocket = new ServerSocket(2317);
+ OutputStream os;
+ PrintStream ps;
+ InetAddress localAddress, remoteAddress;
+ int localPort, remotePort;
+ int serverLoopCount = 0;
+
+ boolean keepGoing = true;
+ // Server is up and waiting (i.e. "blocked" or paused)
+ // Loop, infinitely, waiting for client connections.
+ // Stop the program somewhere else.
+ while (keepGoing) {
+ // block until connected to a client
+ try (Socket clientConnectionSocket = serverSocket.accept())
+ {
+ serverLoopCount++; // increment at beginning of loop for reliability
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ os = clientConnectionSocket.getOutputStream();
+ ps = new PrintStream(os);
+ ps.println("This is response " + serverLoopCount + " produced by the server."); // this gets sent back to client!
+
+ // Print some information locally about the Socket connection.
+ // This includes the port and IP numbers on both sides (the socket pair).
+ localAddress = clientConnectionSocket.getLocalAddress();
+ remoteAddress = clientConnectionSocket.getInetAddress();
+ localPort = clientConnectionSocket.getLocalPort();
+ remotePort = clientConnectionSocket.getPort();
+
+ if (serverLoopCount > 100) {
+ keepGoing = false;
+ }
+ // First pose
+ if (serverLoopCount % 2 == 0) {
+ System.out.println(" O/ "); // head
+ System.out.println(" /| "); // arms
+ System.out.println(" / \\ "); // legs
+ System.out.println(" | | "); // torso
+ System.out.println();
+ }
+
+ // Second pose
+ else {
+ System.out.println(" \\O "); // head
+ System.out.println(" |\\ "); // arms
+ System.out.println(" / \\ "); // legs
+ System.out.println(" | | "); // torso
+ System.out.println();
+ }
+
+
+ // System.out.print ("Server loop " + serverLoopCount + ": ");
+
+ // My socket pair connection looks like this, to localhost:
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54876 ))
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54881 ))
+
+ // Why is the first IP/port the same, while the second set has different ports?
+ // System.out.println(HW1Server.class.getName() + " socket pair showing host name, address, port:");
+ // System.out.println(" (( " +
+ // localAddress.getHostName() + "=" + localAddress.getHostAddress() + ", " + localPort + " ), ( " +
+ // remoteAddress.getHostName() + "=" + remoteAddress.getHostAddress() + ", " + remotePort + " ))");
+
+ if ( localAddress.getHostName().equals( localAddress.getHostAddress()) ||
+ remoteAddress.getHostName().equals(remoteAddress.getHostAddress()))
+ System.out.println(" note HostName matches address if host has no DNS name");
+ // Notice the use of flush() and try w/ resources. Without
+ // the try w/ resources the Socket object may stay open for
+ // a while after the client has stopped needing this
+ // connection. try w/ resources explicitly ends the connection.
+ ps.flush();
+ // like it or not, you're outta here!
+ }
+ }
+ } catch (IOException e) {
+ System.err.println("Problem with " + HW1Server.class.getName() + " networking: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/homework1/Oblak/Assignment1Client.java b/assignments/src/MV3500Cohort2023MarchJune/homework1/Oblak/Assignment1Client.java
new file mode 100644
index 0000000000000000000000000000000000000000..ce9d9b590720fa403a30ff8eca4b467015e21f07
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/homework1/Oblak/Assignment1Client.java
@@ -0,0 +1,104 @@
+package MV3500Cohort2023MarchJune.homework1.Oblak;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * This is Assignment 1 where I have modified the given code from TCPExample3Client
+ * -sleep time has been extended to give more time in between loops
+ * -Initial print line has been altered to reflect assingnment 1
+ * -Loop only runs a finite number of times ,10.
+ * Before, we always used telnet (netcat) to connect to the server. Here we are
+ * now writing our own program to do the connection.
+ *
+ * As you will see, when we run this after we start the server we will see the
+ * same string telnet printed, sent by the server. The output at the server will
+ * show different socket pairs for each time the loop iterates.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class Assignment1Client
+{
+ /** Default constructor */
+ public Assignment1Client()
+ {
+ // default constructor
+ }
+ /** IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+ * @see <a href="https://en.wikipedia.org/wiki/localhost">https://en.wikipedia.org/wiki/localhost</a>
+ * @see <a href="https://en.wikipedia.org/wiki/IPv6_address">https://en.wikipedia.org/wiki/IPv6_address</a>
+ */
+ public final static String LOCALHOST = "0:0:0:0:0:0:0:1";
+
+ /**
+ * Program invocation, execution starts here
+ * @param args command-line arguments
+ */
+ public static void main(String[] args)
+ {
+ // Local variables/fields
+ Socket socket = null;
+ InputStream is;
+ Reader isr;
+ BufferedReader br;
+ String serverMessage;
+ int clientLoopCount = 0;
+ int numberOfLoops = 10;
+
+ try {
+ while (clientLoopCount < numberOfLoops)
+ {
+ clientLoopCount++; // increment at beginning of loop for reliability
+ System.out.println(Assignment1Client.class.getName() + " creating socket...");
+
+ // We request an IP to connect to ("localhost") and
+ // port number at that IP (2317). This establishes
+ // a connection to that IP in the form of a Socket
+ // object; the server uses a ServerSocket to wait for
+ // connections.
+ socket = new Socket(LOCALHOST, 2317); // locohost?
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ is = socket.getInputStream();
+ isr = new InputStreamReader(is);
+ br = new BufferedReader(isr);
+
+ // Read a single line written by the server. We'd
+ // do things a bit differently if there were many lines to be read
+ // from the server instead of one only.
+ serverMessage = br.readLine();
+ System.out.println("======================Assignment1===========================");
+
+ System.out.print ("Client loop " + clientLoopCount + ": ");
+ System.out.println("now we're talking!");
+ System.out.println("The message the server sent was: '" + serverMessage + "'");
+ // socket gets closed, either automatically/silently by this code (or possibly by the server)
+
+ Thread.sleep(800l); // slow things down, for example 500l (long) = 500 msec
+
+ } // end while(true) // infinite loops are dangerous, be sure to kill this process!
+ }
+ catch (IOException | InterruptedException e)
+ {
+ System.err.println("Problem with " + TcpExample3Client.class.getName() + " networking:"); // describe what is happening
+ System.err.println("Error: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ finally // occurs after any other activity when shutting down
+ {
+ try {
+ if (socket != null)
+ socket.close();
+ } catch (IOException e) {}
+
+ // program exit: tell somebody about that happening. Likely cause: server drops connection.
+ System.out.println();
+ System.out.println(TcpExample3Client.class.getName() + " exit");
+ }
+ }
+}
diff --git a/assignments/src/MV3500Cohort2023MarchJune/homework1/Oblak/Assignmnet1Server.java b/assignments/src/MV3500Cohort2023MarchJune/homework1/Oblak/Assignmnet1Server.java
new file mode 100644
index 0000000000000000000000000000000000000000..c900e282cef02511edcaf36cf7087b8b19581771
--- /dev/null
+++ b/assignments/src/MV3500Cohort2023MarchJune/homework1/Oblak/Assignmnet1Server.java
@@ -0,0 +1,112 @@
+package MV3500Cohort2023MarchJune.homework1.Oblak;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * This is Assignment 1 where I have modified the given code from TCPExample3Server
+ *-server response message changed
+ *
+ * Very slightly more complex than example1, further modifying example2. The
+ * only thing this does differently is introduce a loop into the response, so
+ * you don't have to restart the program after one response. Also, it prints out
+ * the socket pair the server sees. Run the program via telnet several times and
+ * compare the socket pairs.
+ *
+ * telnet (nc) localhost 2317
+ *
+ * If you're sophisticated you can contact the instructor's computer while
+ * running this program.
+ *
+ * telnet (nc) [ipNumberOfServerLaptop] 2317
+ *
+ * and have the instructor display the socket pairs received.
+ *
+ * @author mcgredo
+ * @author brutzman@nps.edu
+ */
+public class Assignmnet1Server
+{
+ /** Default constructor */
+ public Assignmnet1Server()
+ {
+ // default constructor
+ }
+ /**
+ * Program invocation, execution starts here
+ * If already compiled, can run using console in directory ../../build/classes/ by invoking \
+ * java -classpath . TcpExamples.TcpExample3Server
+ * @param args command-line arguments
+ */
+ public static void main(String[] args) {
+ try {
+
+ // ServerSocket waits for a connection from a client.
+ // Notice that it is outside the loop; ServerSocket
+ // needs to be made only once.
+ System.out.println(Assignmnet1Server.class.getName() + " has started..."); // it helps debugging to put this on console first
+
+ ServerSocket serverSocket = new ServerSocket(2317);
+ OutputStream os;
+ PrintStream ps;
+ InetAddress localAddress, remoteAddress;
+ int localPort, remotePort;
+ int serverLoopCount = 0;
+
+ // Server is up and waiting (i.e. "blocked" or paused)
+ // Loop, infinitely, waiting for client connections.
+ // Stop the program somewhere else.
+ while (true) {
+
+ // block until connected to a client
+ try (Socket clientConnectionSocket = serverSocket.accept())
+ {
+ serverLoopCount++; // increment at beginning of loop for reliability
+
+ // Now hook everything up (i.e. set up the streams), Java style:
+ os = clientConnectionSocket.getOutputStream();
+ ps = new PrintStream(os);
+ ps.println("This is response " + serverLoopCount + " produced by the server, "
+ + Assignmnet1Server.class.getName()); // this gets sent back to client!
+
+ // Print some information locally about the Socket connection.
+ // This includes the port and IP numbers on both sides (the socket pair).
+ localAddress = clientConnectionSocket.getLocalAddress();
+ remoteAddress = clientConnectionSocket.getInetAddress();
+ localPort = clientConnectionSocket.getLocalPort();
+ remotePort = clientConnectionSocket.getPort();
+
+ System.out.print ("Server loop " + serverLoopCount + ": ");
+
+ // My socket pair connection looks like this, to localhost:
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54876 ))
+ // Socket pair: (( /0:0:0:0:0:0:0:1, 2317 ), ( /0:0:0:0:0:0:0:1, 54881 ))
+
+ // Why is the first IP/port the same, while the second set has different ports?
+ System.out.println(TcpExample3Server.class.getName() + " socket pair showing host name, address, port:");
+ System.out.println(" (( " +
+ localAddress.getHostName() + "=" + localAddress.getHostAddress() + ", " + localPort + " ), ( " +
+ remoteAddress.getHostName() + "=" + remoteAddress.getHostAddress() + ", " + remotePort + " ))");
+
+ if ( localAddress.getHostName().equals( localAddress.getHostAddress()) ||
+ remoteAddress.getHostName().equals(remoteAddress.getHostAddress()))
+ System.out.println(" note HostName matches address if host has no DNS name");
+
+ // Notice the use of flush() and try w/ resources. Without
+ // the try w/ resources the Socket object may stay open for
+ // a while after the client has stopped needing this
+ // connection. try w/ resources explicitly ends the connection.
+ ps.flush();
+ // like it or not, you're outta here!
+ }
+ }
+ } catch (IOException e) {
+ System.err.println("Problem with " + TcpExample3Server.class.getName() + " networking: " + e);
+
+ // Provide more helpful information to user if exception occurs due to running twice at one time
+ if (e instanceof java.net.BindException) {
+ System.err.println("*** Be sure to stop any other running instances of programs using this port!");
+ }
+ }
+ }
+}
diff --git a/presentations/01_README_LVC.md b/presentations/01_README_LVC.md
index c8b697dbc4aa9b3c0ca371d95eb6b45d8e4641f2..f945b82ead1c7a7a9c8abef331ed2971321422df 100644
--- a/presentations/01_README_LVC.md
+++ b/presentations/01_README_LVC.md
@@ -22,6 +22,7 @@ correctly added together.
7. Aircraft operations: fueling, maintenance, resupply, flying, takeoff/landing, fighting etc.
8. NATO Live Training Exercise, for example [CWIX 2022](https://www.jftc.nato.int/articles/cwix-2022) as part of [NATO FEDERATED INTEROPERABILITY](https://www.act.nato.int/federated-interoperability)
9. MOUT (Military Operations on Urban Terrain)
+10. (Your Example Here)
## Virtual
@@ -32,7 +33,7 @@ correctly added together.
5. Small Arms fire simulator (i.e AGSHP (germany))
6. Aircraft operations: fueling, maintenance, resupply, flying, takeoff/landing, fighting etc.
7. Non-Combatant Evacuation Operations [NEO](https://www.defense.gov/News/News-Stories/Article/Article/2793440/dod-leaders-address-bagram-departure-noncombatant-evacuation-operation-timing/)
-8.
+8. (Your Example Here)
## Constructive
@@ -48,4 +49,6 @@ correctly added together.
* [In God We Trust... All Others Bring Data](https://en.wikiquote.org/wiki/W._Edwards_Deming#Misattributed)
* Is there anything we do in DoD that is NOT a candidate for LVC? Hmmm...
-* Interesting to observe that typical progresssion in regular practice is Virtual rehearsal first then Live conduct, VLC perhaps
+* Interesting to observe that typical progresssion in regular practice is Virtual rehearsal first then Live conduct, VLC perhaps.
+* I used to dislike the term "LVC" because it meant everything to everybody.
+ Now I really like the term "LVC" because... it means everything to everbody!