first commit

CS2335/lab4/Lab_files/Examples/Networking/AbstractNetworkMessage.java

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+import java.io.Serializable;
+
+
+public abstract class AbstractNetworkMessage implements Serializable {
+
+  //////////////////////////////// Data Members ///////////////////////////////
+  private String messageName;
+
+  //////////////////////////////// Constructors ///////////////////////////////
+  public AbstractNetworkMessage() {
+    messageName = "AbstractMessage";
+  }
+
+  public AbstractNetworkMessage(String name) {
+    messageName = name;
+  }
+
+  ////////////////////////////////// Methods //////////////////////////////////
+
+  public String getMessageName() {
+    return messageName;
+  }
+
+  public String tokenize() {
+    return messageName;
+  }
+
+}// end of class AbstractNetworkMessage

CS2335/lab4/Lab_files/Examples/Networking/ClientExample.java

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+import java.io.*;
+import java.net.*;
+
+class ClientExample {
+  public static final int PORT = 1234;
+  
+  public static void main(String argv[]) {
+    try {
+      Socket s = new Socket("localhost", PORT);
+      BufferedReader br = new BufferedReader(new 
+					     InputStreamReader(s.getInputStream()));
+      PrintWriter pr = new PrintWriter(new 
+				       OutputStreamWriter(s.getOutputStream()));
+      ObjectOutputStream oos = new ObjectOutputStream(s.getOutputStream());
+	
+      System.out.println(s.getLocalAddress().toString());
+      System.out.println(s.getLocalSocketAddress().toString());
+
+      String message = null;
+
+      BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
+
+      while((message = stdIn.readLine()) != null) {
+	System.out.println("Sending message: " + message);
+	oos.writeObject(new TextMessage(message));
+	oos.flush();
+      }
+    } catch (IOException e) {
+      System.out.println("IO Exception: " + e.getMessage());
+    }
+  }
+}

CS2335/lab4/Lab_files/Examples/Networking/NumberMessage.java

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+
+public class NumberMessage extends AbstractNetworkMessage {
+
+  //////////////////////////////// Data Members ///////////////////////////////
+  private int myNumber;
+
+  //////////////////////////////// Constructors ///////////////////////////////
+  /**
+   * Creates a new <code>NumberMessage</code> instance.
+   *
+   */
+  public NumberMessage(int number) {
+    super("NumberMessage");
+
+    myNumber = number;
+  }
+
+  ////////////////////////////////// Methods //////////////////////////////////
+  public String tokenize() {
+    return super.tokenize() + ": " + Integer.toString(myNumber);
+  }
+
+}// end of class NumberMessage

CS2335/lab4/Lab_files/Examples/Networking/Original/ClientExample.java

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+import java.io.*;
+import java.net.*;
+
+class ClientExample {
+    public static final int PORT = 1234;
+
+    public static void main(String argv[]) {
+        try {
+        Socket s = new Socket("localhost", PORT);
+        BufferedReader br = new BufferedReader(new 
+InputStreamReader(s.getInputStream()));
+        PrintWriter pr = new PrintWriter(new 
+OutputStreamWriter(s.getOutputStream()));
+
+	System.out.println(s.getLocalAddress().toString());
+	System.out.println(s.getLocalSocketAddress().toString());
+        pr.println("Hello, world!");
+        pr.flush();
+        System.out.println(br.readLine());
+        } catch (IOException e) {
+            System.out.println("IO Exception: " + e.getMessage());
+        }
+    }
+}

CS2335/lab4/Lab_files/Examples/Networking/Original/ServerExample.java

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+import java.io.*;
+import java.net.*;
+
+class ServerExample extends Thread {
+
+    Socket socket;
+    public static final int PORT = 1234;
+
+    public ServerExample(Socket socket) {
+        this.socket = socket;
+    }
+
+    public void run() {
+        try {
+            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+            PrintWriter pr = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
+
+            String s = br.readLine();
+            System.out.println("Received " + s);
+            pr.println("Thank you for your input");
+            pr.flush();
+        } catch (IOException ioe) {
+            System.out.println("Got IO Exception: " + ioe.getMessage());
+        }
+
+    }
+
+    public static void main(String argv[]) {
+        try {
+            ServerSocket ss = new ServerSocket(PORT);
+            while (true) {
+                Socket s = ss.accept();
+                new ServerExample(s).start();
+            }
+        } catch (IOException ioe) {
+            System.out.println("Got IO Exception: " + ioe.getMessage());
+        }
+    }
+}

CS2335/lab4/Lab_files/Examples/Networking/ServerExample.java

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+import java.io.*;
+import java.net.*;
+
+class ServerExample extends Thread {
+  
+  Socket socket;
+  public static final int PORT = 1234;
+  
+  public ServerExample(Socket socket) {
+    this.socket = socket;
+  }
+  
+  public void run() {
+    try {
+      BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
+      PrintWriter pr = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
+      ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
+      AbstractNetworkMessage anm;
+
+      while((anm = ((AbstractNetworkMessage)(ois.readObject()))) != null) {
+	String s = anm.tokenize();
+	System.out.println("Received " + s);
+	pr.println("Thank you for your input");
+	pr.flush();
+      }
+    } catch (IOException ioe) {
+      System.out.println("Got IO Exception: " + ioe.getMessage());
+    } catch(Exception e) {
+      System.out.println("Something aint workin': " + e.getMessage());
+    }
+    
+  }
+  
+  public static void main(String argv[]) {
+    try {
+      ServerSocket ss = new ServerSocket(PORT);
+      while (true) {
+	Socket s = ss.accept();
+	new ServerExample(s).start();
+      }
+    } catch (IOException ioe) {
+      System.out.println("Got IO Exception: " + ioe.getMessage());
+    }
+  }
+}

CS2335/lab4/Lab_files/Examples/Networking/TextMessage.java

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+
+public class TextMessage extends AbstractNetworkMessage {
+
+  //////////////////////////////// Data Members ///////////////////////////////
+  private String myMessage;
+
+  //////////////////////////////// Constructors ///////////////////////////////
+  public TextMessage(String msg) {
+    super("TextMessage");
+
+    myMessage = msg;
+  }
+
+  ////////////////////////////////// Methods //////////////////////////////////
+  public String tokenize() {
+    return super.tokenize() + ": " + myMessage;
+  }
+
+}// end of class TextMessage