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import java.net.*;
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import java.net.*;
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import java.io.*;
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import java.io.*;
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public class P3_Client
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public class P3_Client
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{
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{
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    /* Instance Variables */
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    private static IPAddr ip;
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    private static IPAddr ip;
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    private static String hw;
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    private static String hw;
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    private static final String hostName = "localhost";
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    private static final String hostName = "localhost";
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    private static final int portNumber = 1337;
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    private static final int portNumber = 1337;
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    /**
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     * Method: main
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     * Purpose: The main() function, which handles requesting an IP Address,
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     * and then closes when the lease expires.
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     */
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    public static void main (String[] args) throws Exception
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    public static void main (String[] args) throws Exception
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    {
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    {
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        Socket socket = null;
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        Socket socket = null;
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        PrintWriter out = null;
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        PrintWriter out = null;
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        BufferedReader in = null;
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        BufferedReader in = null;
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        BufferedReader kbd = null;
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        BufferedReader kbd = null;
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        String s = new String();
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        String s = new String();
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        boolean running = true;
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        boolean running = true;
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        // Set up the socket, and input and output streams
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        try
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        try
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        {
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        {
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            socket = new Socket (hostName, portNumber);
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            socket = new Socket (hostName, portNumber);
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            out = new PrintWriter (socket.getOutputStream(), true);
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            out = new PrintWriter (socket.getOutputStream(), true);
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            in = new BufferedReader (new InputStreamReader (
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            in = new BufferedReader (new InputStreamReader (
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        {
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        {
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            System.err.printf ("Couldn't get I/O for the connection to: %s\n", hostName);
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            System.err.printf ("Couldn't get I/O for the connection to: %s\n", hostName);
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            System.exit (2);
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            System.exit (2);
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        }
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        }
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        // Ask the user for the Hardware Address
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        System.out.print ("Please type your Hardware Address: ");
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        System.out.print ("Please type your Hardware Address: ");
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        hw = kbd.readLine();
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        hw = kbd.readLine();
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        // Send Hardware Address
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        // Send Hardware Address to the server
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        out.printf ("req IP %s\n", hw);
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        out.printf ("req IP %s\n", hw);
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        // Print every message sent back from the server, until the lease expires
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        while (running)
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        while (running)
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        {
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        {
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            // Get messages from the server
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            s = in.readLine();
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            s = in.readLine();
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            System.out.println (s);
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            System.out.println (s);
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            // Stop when the lease expires
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            if (s.equals("IP Lease Time Expired"))
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            if (s.equals("IP Lease Time Expired"))
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                running = false;
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                running = false;
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        }
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        }
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        // Tell the user that we are quitting
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        System.out.println ("Exiting");
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        System.out.println ("Client Exiting");
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        // Clean up all the sockets
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        out.close();
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        out.close();
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        in.close();
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        in.close();
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        socket.close();
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        socket.close();
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    }
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    }
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}
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}
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