NetBeans/src/model/Transmitter.java

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package model;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Observable;
import java.util.logging.Level;
import java.util.logging.Logger;
import logger.OhmLogger;

/**
 *
 * @author Apollo
 */
public class Transmitter extends Observable implements Runnable
{
  private static final Logger lg = OhmLogger.getLogger();
  private static final int PORT = 35000;
  private static final String IP_ADRESSE = "127.0.0.1";

  int modus;
  private String nachricht;
  String message;
  OutputStream oStream;
  InputStream iStream;
  InputStreamReader isr;
  OutputStreamWriter osr;
  BufferedReader in;
  PrintWriter out;
  Socket s;

  public Transmitter(int modus)
  {
    this.modus = modus;
    nachricht = "";
  }

  @Override
  public void run()
  {
    if (modus == 0)
    {
      ServerSocket sSocket;
      try
      {
        sSocket = new ServerSocket(PORT);
        lg.info("Server: Warte auf Verbindung ...");
        s = sSocket.accept(); // Achtung: blockiert!
        lg.info("Server: Verbindung akzeptiert");
      }
      catch (IOException ex)
      {
        Logger.getLogger(Transmitter.class.getName()).log(Level.SEVERE, null, ex);
      }
    }
    else if (modus == 1)
    {
      lg.info("Client: verbinde ...");
      try
      {
        s = new Socket(IP_ADRESSE, PORT); // Achtung: blockiert!
        lg.info("Client: Verbindung hergestellt");
      }
      catch (IOException ex)
      {
        Logger.getLogger(Transmitter.class.getName()).log(Level.SEVERE, null, ex);
      }
    }

    try
    {
      iStream = s.getInputStream();
      oStream = s.getOutputStream();

      isr = new InputStreamReader(iStream, "UTF-8");
      osr = new OutputStreamWriter(oStream, "UTF-8");

      in = new BufferedReader(isr);
      //BufferedWriter out = new BufferedWriter(osr);
      out = new PrintWriter(osr);
    }
    catch (IOException ex)
    {
      Logger.getLogger(Transmitter.class.getName()).log(Level.SEVERE, null, ex);
    }
    if (modus == 0)
    {
      lg.info("Server: Stream initialisiert");
    }
    else if (modus == 1)
    {
      lg.info("Client: Stream initialisiert");
    }
    while (true)
    {
      try
      {
        nachricht = in.readLine(); // Achtung blockiert
      }
      catch (IOException ex)
      {
        Logger.getLogger(Transmitter.class.getName()).log(Level.SEVERE, null, ex);
      }

      setChanged();
      notifyObservers();

      lg.info("Server: Nachricht empfangen");
      out.flush(); // wirklich absenden!!

      if (nachricht.equals("beenden"))
      {
        break;
      }
    }

    try
    {
      in.close();
      out.close();
      
    }
    catch (IOException ex)
    {
      Logger.getLogger(Transmitter.class.getName()).log(Level.SEVERE, null, ex);
    }
  }

  public void send(String input)
  {  
    out.println(input);
    out.flush(); // wirklich absenden!!
  }
  /**
   * @return the nachricht
   */
  public String getNachricht()
  {
    System.out.println("Server: NACHRICHT EMPFANGEN - " + nachricht);
    return nachricht;
  }

}