/** DaytimeModel.java is the MVC model for a client
 *   for the TCP/IP daytime service.
 *  @author Joel Adams, July 2003.
 */

import java.net.*;    // Socket, InetAddress
import java.io.*;     // BufferedReader, ...

class DaytimeModel {
  private final int PORT = 13;
  private Socket mySocket;
  private BufferedReader myReader;
  private String myHost;

  public DaytimeModel(String host) {
    myHost = host;
    try {
      InetAddress addr = InetAddress.getByName(host);
      mySocket = new Socket(addr, PORT);
      myReader = new BufferedReader(
                  new InputStreamReader(
                    mySocket.getInputStream() ));
    }
    catch( Exception e ) { e.printStackTrace(); }
  }
 
  public String receive() {
   String result = "";
   if (myReader != null) {
     try { 
      String temp;
      while (true) {
         temp = myReader.readLine(); 
         if (temp == null) break;
         result += temp;
      }
     }      
     catch ( Exception e ) { e.printStackTrace(); }
   } else {
     result = "Unable to contact host '" + myHost + "'";
   }
   return result;
  }

  public void finalize() {
   try { mySocket.close(); }
   catch ( Exception e ) { e.printStackTrace(); }   
  }
}