Chatprogramm-Text/src/chatprogramm/model/Client.java

package chatprogramm.model;

import chatprogramm.logger.OhmLogger;
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.io.UnsupportedEncodingException;
import java.net.Socket;
import java.util.Observable;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Marian
 */
public class Client extends Observable implements Runnable
{
    private Socket socket;
    private BufferedReader reader;
    private PrintWriter writer;
    private boolean ready;
    private Thread thd;
    private String ip;
    private int port;
    private static Logger logger = OhmLogger.getLogger();
    
    
    public Client(String ip, int port)
    {
        this.ip = ip;
        this.port = port;
        this.socket = null;
        this.reader = null;
        this.writer = null;
        this.ready = false;
        this.thd = null;
    }
    
    public void init()
    {
        if (thd == null) 
        {
            thd = new Thread(this);
            thd.start();
        }
    }
    
    public void sendMessage(String msg)
    {
        if (ready) 
        {
            writer.println(msg);
            writer.flush();
        } 
        else 
        {
            logger.warning("Server not ready to send message. Connect first");
        }
    }

    @Override
    public void run()
    {
        logger.info("Running client...");
        
        while (true)
        {
            if (socket == null) 
            {
                try 
                {
                    socket = new Socket(ip, port);
                    logger.info("Connected to server");
                } 
                catch (IOException e) 
                {
                    logger.severe(e.getMessage());
                    socket = null;
                    try 
                    {
                        Thread.sleep(1000);
                    } 
                    catch (InterruptedException ex) 
                    {
                        Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
                    }
                    continue;
                }
                
                InputStream iStream;
                try 
                {
                    iStream = socket.getInputStream();
                } 
                catch (IOException e) 
                {
                    logger.severe(e.getMessage());
                    return;
                }
                OutputStream oStream;
                try 
                {
                    oStream = socket.getOutputStream();
                } 
                catch (IOException e) 
                {
                    logger.severe(e.getMessage());
                    return;
                }

                InputStreamReader isr;
                try 
                {
                    isr = new InputStreamReader(iStream, "UTF-8");
                } 
                catch (UnsupportedEncodingException e) 
                {
                    logger.severe(e.getMessage());
                    return;
                }
                OutputStreamWriter osr;
                try 
                {
                    osr = new OutputStreamWriter(oStream, "UTF-8");
                } 
                catch (UnsupportedEncodingException e) 
                {
                    logger.severe(e.getMessage());
                    return;
                }

                reader = new BufferedReader(isr);
                writer = new PrintWriter(osr);                
                ready = true;
            }
            
            if (ready) 
            {
                String msg;
                try 
                {
                    logger.info("Waiting");
                    msg = reader.readLine();
                } 
                catch (IOException e) 
                {
                    logger.severe(e.toString());
                    return;
                }
                
                this.setChanged();
                this.notifyObservers(msg);
            }
        }
    }
}