restoring mysterious loss of projects following merge/commit

assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayClient.java

+package MV3500Cohort2020JulySeptember.homework2.Garibay;
+
+import java.io.*;
+import java.net.*;
+/**
+ *
+ * @author Chris
+ */
+public class GaribayClient {
+
+    // IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+    public final static String LOCALHOST = "0:0:0:0:0:0:0:1";
+
+    public static void main(String[] args) {
+        
+        // Local vars/fields
+        Socket socket;
+        InputStream is;
+        InputStreamReader isr;
+        BufferedReader br;
+        String serverMessage;
+        Integer count = 0;
+        OutputStream os;
+        PrintStream ps;
+        
+        
+        try {
+            while (true) {
+                System.out.println("TcpExample3Client 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.println("'How many beer bottles are on the wall?");
+                System.out.println("The GaribayServer responds by saying: '" + serverMessage + "'");
+                System.out.println("GaribayClient says, 'There are "+ count +" beer bottles on the wall. Always good to have more beer bottles.");
+                count++;
+                // socket gets closed, either automatically/silently by this code (or possibly by the server)
+                
+                
+                // Now hook everything up (i.e. set up the streams), Java style:
+                os = socket.getOutputStream();
+                ps = new PrintStream(os);
+                ps.println("GaribayClient message."); // this gets sent back to client!
+                
+                ps.flush();
+                
+                
+                
+            } // end while(true)
+        } catch (IOException e) {
+            System.err.println("Problem with TcpExample3ServerClient 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 {
+        
+            // program exit: tell somebody about that
+            System.out.println("\nclient exit");
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Garibay/GaribayServer.java

+package MV3500Cohort2020JulySeptember.homework2.Garibay;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ *
+ * @author Chris
+ */
+public class GaribayServer {
+
+    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 has started..."); // it helps debugging to put this on console first
+            
+            ServerSocket serverSocket = new ServerSocket(2317);
+            OutputStream os;
+            PrintStream ps;
+            InetAddress localAddress, remoteAddress;
+            
+            InputStream is;
+            InputStreamReader isr;
+            BufferedReader br;
+            String clientMessage;
+            int localPort, remotePort;
+
+            // 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 clientConnection = serverSocket.accept()) {
+                    
+                    // Now hook everything up (i.e. set up the streams), Java style:
+                    os = clientConnection.getOutputStream();
+                    ps = new PrintStream(os);
+                    ps.println("Count for yourself!"); // 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 = clientConnection.getLocalAddress();
+                    remoteAddress = clientConnection.getInetAddress();
+                    localPort = clientConnection.getLocalPort();
+                    remotePort = clientConnection.getPort();
+                    
+                    // 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 socket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( "
+                            + remoteAddress.toString() + ", " + remotePort + " ))");
+                    
+                    // 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.
+                    
+                                    // Now hook everything up (i.e. set up the streams), Java style:
+                is = clientConnection.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.
+                clientMessage = br.readLine();
+                System.out.println("==================================================");
+                System.out.println("Now we're talking!");
+                System.out.println("The message the server sent was: '" + clientMessage + "'");
+//                System.out.println("This was the "+ count +" connection.");
+                    
+              
+                    ps.flush();
+                    // like it or not, you're outta here!
+                }
+            }
+        } catch (IOException e) {
+            System.err.println("Problem with TcpExample3Server 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!");
+            }
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Goericke/GoerickeClient.java

+package MV3500Cohort2020JulySeptember.homework2.Goericke;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.net.Socket;
+
+/**
+ *
+ * @author stefa
+ */
+public class GoerickeClient {
+
+    // IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+    public final static String LOCALHOST = "0:0:0:0:0:0:0:1";
+
+    public static void main(String[] args) {
+        
+        // Local vars/fields
+        Socket socket;
+        InputStream is;
+        InputStreamReader isr;
+        BufferedReader br;
+        String serverMessage;
+        
+        try {
+            while (true) {
+                System.out.println("\nGoerickeClient 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?
+
+                // thats my input stream 
+                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("The message the server sent was: '" + serverMessage + "'");
+                // socket gets closed, either automatically/silently by this code (or possibly by the server)
+                if (serverMessage.contentEquals("Welcome, how are you !!!")) {
+                    System.out.println("What a nice and friendly server");
+                } else if (serverMessage.contentEquals("Still alive there ?")){
+                    System.out.println("Yes, I am ... still .... where else should I be");
+                } else{
+                    System.out.println("Seems he does not have anything to tell");
+                }
+                
+            } // end while(true)
+        } catch (IOException e) {
+            System.err.println("Problem with TcpExample3ServerClient 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 {
+        
+            // program exit: tell somebody about that
+            System.out.println("\nclient exit");
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Goericke/GoerickeServer.java

+package MV3500Cohort2020JulySeptember.homework2.Goericke;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.net.InetAddress;
+import java.net.ServerSocket;
+import java.net.Socket;
+
+/**
+ * This runable sets up a TCP/IP server for use with a client coded 
+ * within MV3500 - Homework 2. 
+ * @author stefan goericke */
+public class GoerickeServer {
+    
+    
+    private static String getLogo(){
+        String masterString = "           #########   ######    #       #\r\n";
+        masterString = masterString + "               #       #          #     #\r\n";
+        masterString = masterString + "               #       ######      #   #\r\n";
+        masterString = masterString + "               #            #       # #\r\n";
+        masterString = masterString + "               #       ######        #\r\n\n\n";
+        return masterString;
+    }
+
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        System.out.print(getLogo());
+        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("GoerickeServer 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;
+
+            // Server is up and waiting (i.e. "blocked" or paused)
+            // Loop, infinitely, waiting for client connections.
+            // Stop the program somewhere else.
+            int counter = 0;
+            while (true) { 
+                
+                // block until connected to a client
+                try (Socket clientConnectionSocket = serverSocket.accept()) {
+                    counter++;
+                    // my output stream
+                    os = clientConnectionSocket.getOutputStream();
+                    ps = new PrintStream(os);
+                    
+                    
+                    if (counter==1){
+                        ps.println("Welcome, how are you !!!"); // this gets sent back to client!
+                    }
+                    else if (counter%10 == 0){
+                        ps.println("Still alive there ?");
+                    } else {
+                        ps.println("----------");
+                    }
+                    
+                    // 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 (( localAddress.getHostName().equals( localAddress.getHostAddress()) ||
+                        remoteAddress.getHostName().equals(remoteAddress.getHostAddress())) &&
+                        (counter%50==0)){
+                        System.out.println("Talking to myself ..... again");
+                    } else if (counter%50==0) {
+                        System.out.println("Connected to ....");
+                        System.out.print("(" + remoteAddress.getHostName() + "=" + remoteAddress.getHostAddress() + ", " + remotePort + " ))");
+                        System.out.println();
+                        System.out.println("I am ....");
+                        System.out.print("(" + localAddress.getHostName() + "=" +  localAddress.getHostAddress() + ", " + localPort + " ), ( ");    
+                    }
+
+                    // connection. try w/ resources explicitly ends the connection.
+                    ps.flush();
+                }
+            }
+        } catch (IOException e) {
+            System.err.println("Problem with TcpExample3Server 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!");
+            }
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Mahan/Mahan_Client.java

+package MV3500Cohort2020JulySeptember.homework2.Mahan;
+
+import java.io.*;
+import java.net.*;
+/**
+ *
+ * @author Bill
+ */
+public class Mahan_Client {
+
+    // IPv6 String constant for localhost address, similarly IPv4 127.0.0.1
+    public final static String LOCALHOST = "0:0:0:0:0:0:0:1";
+
+    public static void main(String[] args) {
+        
+        // Local vars/fields
+        Socket socket;
+        InputStream is;
+        InputStreamReader isr;
+        BufferedReader br;
+        String serverMessage;
+        Integer count = 0;
+        
+        OutputStream os;
+        PrintStream ps;
+        
+        
+        try {
+            while (true) {
+                System.out.println("TcpExample3Client 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.println("'Knock, knock,' says the MahanClient.");
+                System.out.println("The MahanServer responds by saying: '" + serverMessage + "'");
+                System.out.println("A frustrated MahanClient responds, 'Answer your door! I have knocked "+ count +" times.");
+                count++;
+                // socket gets closed, either automatically/silently by this code (or possibly by the server)
+                
+                
+                // Now hook everything up (i.e. set up the streams), Java style:
+                os = socket.getOutputStream();
+                ps = new PrintStream(os);
+                ps.println("This message was produced by the MahanClient."); // this gets sent back to client!
+                
+                ps.flush();
+                
+                
+                
+            } // end while(true)
+        } catch (IOException e) {
+            System.err.println("Problem with TcpExample3ServerClient 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 {
+        
+            // program exit: tell somebody about that
+            System.out.println("\nclient exit");
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Mahan/Mahan_Server.java

+package MV3500Cohort2020JulySeptember.homework2.Mahan;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ *
+ * @author Bill
+ */
+public class Mahan_Server {
+
+    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 has started..."); // it helps debugging to put this on console first
+            
+            ServerSocket serverSocket = new ServerSocket(2317);
+            OutputStream os;
+            PrintStream ps;
+            InetAddress localAddress, remoteAddress;
+            
+            InputStream is;
+            InputStreamReader isr;
+            BufferedReader br;
+            String clientMessage;
+            int localPort, remotePort;
+
+            // 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 clientConnection = serverSocket.accept()) {
+                    
+                    // Now hook everything up (i.e. set up the streams), Java style:
+                    os = clientConnection.getOutputStream();
+                    ps = new PrintStream(os);
+                    ps.println("Go away!"); // 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 = clientConnection.getLocalAddress();
+                    remoteAddress = clientConnection.getInetAddress();
+                    localPort = clientConnection.getLocalPort();
+                    remotePort = clientConnection.getPort();
+                    
+                    // 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 socket pair: (( " + localAddress.toString() + ", " + localPort + " ), ( "
+                            + remoteAddress.toString() + ", " + remotePort + " ))");
+                    
+                    // 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.
+                    
+                                    // Now hook everything up (i.e. set up the streams), Java style:
+                is = clientConnection.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.
+                clientMessage = br.readLine();
+                System.out.println("==================================================");
+                System.out.println("Now we're talking!");
+                System.out.println("The message the server sent was: '" + clientMessage + "'");
+//                System.out.println("This was the "+ count +" connection.");
+                    
+                    
+                    
+                    ps.flush();
+                    // like it or not, you're outta here!
+                }
+            }
+        } catch (IOException e) {
+            System.err.println("Problem with TcpExample3Server 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!");
+            }
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Weissenberger/LokiChatClient.java

+package MV3500Cohort2020JulySeptember.homework2.Weissenberger;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * This client program establishes a socket connection to the chat server, hand
+ * over the connection to a thread.
+ *
+ * @author Bernd "Loki" Weissenberger
+ */
+public class LokiChatClient implements Runnable {
+
+    private Socket socket = null;
+    private Thread thread = null;
+    private DataInputStream console = null;
+    private DataOutputStream streamOut = null;
+    private LokiClientThread client = null;
+
+    /**
+     * constructor. 
+     * @param serverName as named (localhost per default)
+     * @param serverPort as named (should be 2317)
+     */
+    public LokiChatClient(String serverName, int serverPort) {
+        System.out.println("***********************************************");
+        System.out.println("* Establishing connection. Please wait ... :) *");
+        System.out.println("***********************************************");
+
+        try {
+            socket = new Socket(serverName, serverPort);
+            System.out.println("I'm connected: " + socket);
+            start();
+        } catch (UnknownHostException uhe) {
+            System.out.println("Host unknown: " + uhe.getMessage());
+        } catch (IOException ioe) {
+            System.out.println("Unexpected exception (server isn't up??): " + ioe.getMessage());
+        }
+    }
+
+    public void run() {
+        while (thread != null) {
+            try {
+                streamOut.writeUTF(console.readLine());
+                streamOut.flush();
+            } catch (IOException ioe) {
+                System.out.println("Sending error: " + ioe.getMessage());
+                stop();
+            }
+        }
+    }
+
+    public void handle(String msg) {
+        if (msg.equals(".bye")) {
+            System.out.println("Good bye. Press RETURN to exit ...");
+            stop();
+        } else {
+            System.out.println(msg);
+        }
+    }
+    
+    /**
+     * setup the streams and (if possible) the Thread
+     * @throws IOException 
+     */
+    public void start() throws IOException {
+        console = new DataInputStream(System.in);
+        streamOut = new DataOutputStream(socket.getOutputStream());
+        if (thread == null) {
+            client = new LokiClientThread(this, socket);
+            thread = new Thread(this);
+            thread.start();
+        }
+    }
+    
+    /**
+     * stops the Thread
+     */
+    public void stop() {
+        if (thread != null) {  //thread.stop();  
+            thread = null;
+        }
+        try {
+            if (console != null) {
+                console.close();
+            }
+            if (streamOut != null) {
+                streamOut.close();
+            }
+            if (socket != null) {
+                socket.close();
+            }
+        } catch (IOException ioe) {
+            System.out.println("Error closing ...");
+        }
+        client.close();
+    }
+    
+    /**
+     * main method with fix IP and Port
+     * @param args 
+     */
+    public static void main(String args[]) {
+        LokiChatClient client = null;
+        client = new LokiChatClient("127.0.0.1", 2317);
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Weissenberger/LokiChatServer.java

+package MV3500Cohort2020JulySeptember.homework2.Weissenberger;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * A server example that creates a new thread to handle multiple
+ * connections one after another, running in parallel.
+ *
+ * @author Bernd Weissenberger
+ */
+public class LokiChatServer implements Runnable {
+
+    private LokiServerThread clients[] = new LokiServerThread[50];
+    private ServerSocket server = null;
+    private Thread thread = null;
+    private int clientCount = 0;
+    
+    /**
+     * constructor
+     * @param port 
+     */
+    public LokiChatServer(int port) {
+        try {
+            System.out.println("Binding to port " + port + ", please wait  ...");
+            server = new ServerSocket(port);
+            System.out.println("Server started: " + server);
+            start();
+        } catch (IOException ioe) {
+            System.out.println("Can not bind to port " + port + ": " + ioe.getMessage());
+        }
+    }
+    
+    /**
+     * start a new thread 
+     */
+    @Override
+    public void run() {
+        while (thread != null) {
+            try {
+                System.out.println("Waiting for a client ...");
+                addThread(server.accept());
+            } catch (IOException ioe) {
+                System.out.println("Server accept error: " + ioe);
+                stop();
+            }
+        }
+    }
+    public void start() {
+        if (thread == null) {
+            thread = new Thread(this);
+            thread.start();
+        }
+    }
+    
+    /**
+     * kill the thread
+     */
+    public void stop() {
+        if (thread != null) {
+            //thread.stop();
+            thread = null;
+        }
+    }
+
+    /**
+     * get the client by ID
+     * @param ID
+     * @return 
+     */
+    private int findClient(int ID) {
+        for (int i = 0; i < clientCount; i++) {
+            if (clients[i].getID() == ID) {
+                return i;
+            }
+        }
+        return -1;
+    }
+    
+    /**
+     * sending message to all clients
+     * @param ID
+     * @param input 
+     */
+    public synchronized void handle(int ID, String input) {
+        if (input.equals(".bye")) {
+            clients[findClient(ID)].send(".bye");
+            remove(ID);
+        } else {
+            for (int i = 0; i < clientCount; i++) {
+                clients[i].send(ID + " says: " + input);
+            }
+        }
+    }
+
+    /**
+     * remove a quit client from list
+     * @param ID 
+     */
+    public synchronized void remove(int ID) {
+        int pos = findClient(ID);
+        if (pos >= 0) {
+            LokiServerThread toTerminate = clients[pos];
+            System.out.println("Removing client thread " + ID + " at " + pos);
+            if (pos < clientCount - 1) {
+                for (int i = pos + 1; i < clientCount; i++) {
+                    clients[i - 1] = clients[i];
+                }
+            }
+            clientCount--;
+            try {
+                toTerminate.close();
+            } catch (IOException ioe) {
+                System.out.println("Error closing thread: " + ioe);
+            }
+            //toTerminate.stop(); 
+        }
+    }
+    
+    /**
+     * add a thread to list
+     * @param socket 
+     */
+    private void addThread(Socket socket) {
+        if (clientCount < clients.length) {
+            System.out.println("Client accepted: " + socket);
+            clients[clientCount] = new LokiServerThread(this, socket);
+            try {
+                clients[clientCount].open();
+                clients[clientCount].start();
+                clientCount++;
+            } catch (IOException ioe) {
+                System.out.println("Error opening thread: " + ioe);
+            }
+        } else {
+            System.out.println("Client refused: maximum " + clients.length + " reached.");
+        }
+    }
+    
+    /**
+     * the main for this class. Just starts a new server listening at port 2317
+     * @param args 
+     */
+    public static void main(String args[]) {
+        LokiChatServer server = null;
+        server = new LokiChatServer(2317);
+    }
+
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Weissenberger/LokiClientThread.java

+package MV3500Cohort2020JulySeptember.homework2.Weissenberger;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * A program that handles all logic associated with one socket connection by
+ * running in a thread of its own. This is the client portion.
+ *
+ * @author Bernd Weisenberger
+ */
+public class LokiClientThread extends Thread {
+
+    private Socket socket = null;
+    private LokiChatClient client = null;
+    private DataInputStream streamIn = null;
+
+    /**
+     * constructor
+     * @param client
+     * @param socket 
+     */
+    public LokiClientThread(LokiChatClient client, Socket socket) {
+        this.client = client;
+        this.socket = socket;
+        this.open();
+        this.start();
+    }
+    
+    /**
+     * initialize the stream
+     */
+    public void open() {
+        try {
+            streamIn = new DataInputStream(socket.getInputStream());
+        } catch (IOException ioe) {
+            System.out.println("Error getting input stream: " + ioe);
+        }
+    }
+    
+    /**
+     * closes the stream
+     */
+    public void close() {
+        try {
+            if (streamIn != null) {
+                streamIn.close();
+            }
+        } catch (IOException ioe) {
+            System.out.println("Error closing input stream: " + ioe);
+        }
+    }
+
+    /**
+     * uses the handle() from Client to react (send or quit)
+     */
+    public void run() {
+        while (true) {
+            try {
+                client.handle(streamIn.readUTF());
+            } catch (IOException ioe) {
+                System.out.println("Listening error: " + ioe.getMessage());
+                client.stop();
+            }
+        }
+    }
+}

assignments/src/MV3500Cohort2020JulySeptember/homework2/Weissenberger/LokiServerThread.java

+package MV3500Cohort2020JulySeptember.homework2.Weissenberger;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * A program that handles all logic associated with one socket connection
+ * by running in a thread of its own. This is the server
+ * portion
+ * 
+ * @author Bernd Weissenberger
+ */
+public class LokiServerThread extends Thread {
+
+    // as named
+    private LokiChatServer server = null;
+    private Socket socket = null;
+    private int ID = -1;
+    private DataInputStream streamIn = null;
+    private DataOutputStream streamOut = null;
+
+    /**
+     * constructor
+     * @param server instance of the server
+     * @param socket ...and the socket
+     */
+    public LokiServerThread(LokiChatServer server, Socket socket) {
+        super();
+        this.server = server;
+        this.socket = socket;
+        this.ID = socket.getPort();
+    }
+    
+    /**
+     * send the messages
+     * @param msg 
+     */
+    public void send(String msg) {
+        try {
+            streamOut.writeUTF(msg);
+            streamOut.flush();
+        } catch (IOException ioe) {
+            System.out.println(ID + " ERROR sending: " + ioe.getMessage());
+            server.remove(ID);
+        }
+    }
+    
+    /**
+     * simple getter
+     * @return 
+     */
+    public int getID() {
+        return ID;
+    }
+    
+    /**
+     * read he input using the handler method
+     */
+    @Override
+    public void run() {
+        System.out.println("Server Thread " + ID + " running.");
+        while (true) {
+            try {
+                server.handle(ID, streamIn.readUTF());
+            } catch (IOException ioe) {
+                System.out.println(ID + " ERROR reading: " + ioe.getMessage());
+                server.remove(ID);
+                //stop();
+            }
+        }
+    }
+
+    /**
+     * open all needed streams
+     * @throws IOException 
+     */
+    public void open() throws IOException {
+        streamIn = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
+        streamOut = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
+    }
+    
+    /**
+     * close socket and streams
+     * @throws IOException 
+     */
+    public void close() throws IOException {
+        if (socket != null) {
+            socket.close();
+        }
+        if (streamIn != null) {
+            streamIn.close();
+        }
+        if (streamOut != null) {
+            streamOut.close();
+        }
+    }
+}