/* Vernetzte Systeme, WS 2001/2002, Uebung 5, Aufgabe 21 b
 *
 * Demonstration des HTTP/1.0-Protokolls:
 * Nutzung von Reader- und Writer-Klassen, um Daten zu lesen.
 */

import java.net.*; 
import java.io.*; 

public class UserAgent21b {

   public static void main(String[] args) throws Exception {

      Socket mySocket = new Socket(args[0], 80);

      /* PrintWriter PrintStream 
       * Contain convenient printing methods. These are the easiest
       * streams to write to, so you will often see other writable
       * streams wrapped in one of these.
       */                                 
      PrintWriter out = new PrintWriter (mySocket.getOutputStream(), true);

      /* InputStreamReader and OutputStreamWriter 
       * A reader and writer pair that forms the bridge between *byte*
       * streams and *character* streams. An InputStreamReader reads
       * bytes from an InputStream and converts them to characters
       * using either the default character-encoding or a
       * character-encoding specified by name.  Similarly, an
       * OutputStreamWriter converts characters to bytes using either
       * the default character-encoding or a character-encoding
       * specified by name and then writes those bytes to an
       * OutputStream.
       */
      BufferedReader in = new BufferedReader(
                             new InputStreamReader(
                                mySocket.getInputStream()));

      // send request (PrintWriter contains 'println' method)
      out.println("GET "  + args[1] + " HTTP/1.0");
      out.println();

      // read answer
      String inputline; 
      while (((inputline = in.readLine()) != null) && 
              (inputline.length() > 0)) 
      {
         System.out.println(inputline);
      }

      out.close();
      in.close();
   } // of main
} // of UserAgent22b class