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

public class MajClient extends Thread {

  private static final int    PORT = 45678;
  private static final String HOST = "leo";

  protected Socket          _socket;
  protected BufferedReader  _console;
  protected BufferedReader  _in;
  protected PrintWriter     _out;

  public MajClient(String host, int num) {
    try {
      _socket  = new Socket(host, num);
      System.out.println("Client: connexion établie sur " + _socket.getInetAddress() + "(port = " + _socket.getPort() + ")");

      _console = new BufferedReader(new InputStreamReader(System.in));
      _in      = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
      _out     = new PrintWriter(_socket.getOutputStream());
   } catch(IOException e) {
      System.err.println("Client: " + e.getMessage());
      try{_socket.close();} catch(IOException e1){}
      System.exit(1);
    }

    this.start();
  }

  public void run() {
    try {
      while(true) {
	System.out.print("Client? "); System.out.flush();
	_out.println(_console.readLine());
	_out.flush();
	String réponse = _in.readLine();
	if(réponse == null) break;
	System.out.println("Client> " + réponse);
      }
    }
    catch(IOException e) {
      System.err.println("Client: " + e.getMessage());
    }
    finally {
      try{_socket.close();} catch(IOException e){}
      System.out.println("Client: connexion terminée");
    }
  }

  public static void main(String args[]) {
    int    num;
    try {
    if(args.length == 0) {
      new MajClient(HOST, PORT);
    }
    else if(args.length == 1) {
      new MajClient(args[0], PORT);
    }
    else if((args.length == 2) && ((num = Integer.parseInt(args[1])) > 0)) {
      new MajClient(args[0], num);
    }
    } catch( NullPointerException e ) {
      System.out.println("\nUsage: java MajClient <host> [<num_port>] \n" );
      System.exit(1);
    }
  }
}