/** Start talking to the server */
 public void start() {
   String codehost = getCodeBase().getHost();
   if (socket == null) {
     try {
       // Open the socket to the server
       socket = new Socket(codehost, port);
       // Create output stream
       out = new ObjectOutputStream(socket.getOutputStream());
       out.flush();
       // Create input stream and start background
       // thread to read data from the server
       in = new ObjectInputStream(socket.getInputStream());
       new Thread(this).start();
     } catch (Exception e) {
       // Exceptions here are unexpected, but we can't
       // really do anything (so just write it to stdout
       // in case someone cares and then ignore it)
       System.out.println("Exception! " + e.toString());
       e.printStackTrace();
       setErrorStatus(STATUS_NOCONNECT);
       socket = null;
     }
   } else {
     // Already started
   }
   if (socket != null) {
     // Make sure the right buttons are enabled
     start_button.setEnabled(false);
     stop_button.setEnabled(true);
     setStatus(STATUS_ACTIVE);
   }
 }
  // **********************************************************************************
  //
  // Theoretically, you shouldn't have to alter anything below this point in this file
  //      unless you want to change the color of your agent
  //
  // **********************************************************************************
  public void getConnected(String args[]) {
    try {
      // initial connection
      int port = 3000 + Integer.parseInt(args[1]);
      s = new Socket(args[0], port);
      sout = new PrintWriter(s.getOutputStream(), true);
      sin = new BufferedReader(new InputStreamReader(s.getInputStream()));

      // read in the map of the world
      numNodes = Integer.parseInt(sin.readLine());
      int i, j;
      for (i = 0; i < numNodes; i++) {
        world[i] = new node();
        String[] buf = sin.readLine().split(" ");
        world[i].posx = Double.valueOf(buf[0]);
        world[i].posy = Double.valueOf(buf[1]);
        world[i].numLinks = Integer.parseInt(buf[2]);
        // System.out.println(world[i].posx + ", " + world[i].posy);
        for (j = 0; j < 4; j++) {
          if (j < world[i].numLinks) {
            world[i].links[j] = Integer.parseInt(buf[3 + j]);
            // System.out.println("Linked to: " + world[i].links[j]);
          } else world[i].links[j] = -1;
        }
      }
      currentNode = Integer.parseInt(sin.readLine());

      String myinfo =
          args[2] + "\n" + "0.7 0.45 0.45\n"; // name + rgb values; i think this is color is pink
      // send the agents name and color
      sout.println(myinfo);
    } catch (IOException e) {
      System.out.println(e);
    }
  }
 /** Stop talking to the server */
 public void stop() {
   if (socket != null) {
     // Close all the streams and socket
     if (out != null) {
       try {
         out.close();
       } catch (IOException ioe) {
       }
       out = null;
     }
     if (in != null) {
       try {
         in.close();
       } catch (IOException ioe) {
       }
       in = null;
     }
     if (socket != null) {
       try {
         socket.close();
       } catch (IOException ioe) {
       }
       socket = null;
     }
   } else {
     // Already stopped
   }
   // Make sure the right buttons are enabled
   start_button.setEnabled(true);
   stop_button.setEnabled(false);
   setStatus(STATUS_STOPPED);
 }
  public ClientThread(Socket socket, History history, Users users) throws IOException {

    logger.warn("New client is trying to connect to the chat...");
    logger.info("Assigning a socket to a new client...");
    this.s = socket;

    logger.info("Getting the input stream...");
    in = new DataInputStream(s.getInputStream());

    logger.info("Getting the output stream...");
    out = new DataOutputStream(s.getOutputStream());

    this.users = users;
    users.addObserver(this);

    this.history = history;

    start();
    logger.warn("Connection with new user is established.");
  }
 public void run() {
   try {
     prepareClient();
     logger.info("Starting normal session with " + getClientName());
     while (true) {
       this.receive();
     }
   } catch (IOException ioe) {
     logger.warn("Client " + this + " has been disconnected.");
     this.setDisabled(true);
     users.remove(this);
   } finally {
     try {
       if (s != null && !s.isClosed()) {
         s.close();
         logger.warn("Socket with " + this + " has been closed.");
       }
     } catch (IOException ioe) {
       logger.error("Socket has not been closed.", ioe);
     }
   }
 }
  public void run() {
    try {
      Socket s = serverSock.accept();
      InputStream in = s.getInputStream();
      byte b[] = new byte[4096];

      // assume we read the entire http request
      // (bad assumption but okay for test case)
      int nread = in.read(b);

      // check the date format by the position of the comma
      String request = new String(b, 0, nread);
      int pos = request.indexOf("If-Modified-Since:");
      int respCode = 200;
      if (pos != -1) {
        pos += "If-Modified-Since:".length() + 4;
        if (pos < nread) {
          if (request.charAt(pos) == (char) ',') {
            respCode = 304;
          }
        }
      }

      OutputStream o = s.getOutputStream();
      if (respCode == 304) {
        o.write("HTTP/1.1 304 Not Modified".getBytes());
      } else {
        o.write("HTTP/1.1 200 OK".getBytes());
      }
      o.write((byte) '\r');
      o.write((byte) '\n');
      o.write((byte) '\r');
      o.write((byte) '\n');
      o.flush();

    } catch (Exception e) {
    }
  }
  public Duder(String args[]) {

    getConnected(args);

    play();

    try {
      sin.close();
      sout.close();
      s.close();
    } catch (IOException e) {
      System.out.println(e);
    }
  }
  private void prepareClient() throws IOException {
    logger.info("Waiting for client's name");
    Message mes = Operations.receive(in);
    setClientName((String) mes.getValue());
    logger.info("Username for " + s.getInetAddress() + " received: " + userName);

    users.add(this);
    logger.info("User " + getClientName() + " has been added to the userlist.");

    messages = new Messages();
    logger.info("Message list created");

    if (!history.containsKey(userName)) {
      history.put(userName, messages);
    } else {
      messages = history.get(userName);
    }
    messages.addObserver(this);
    logger.info("Message list assigned to history");

    logger.info("Sending the list of users.");
    Operations.sendUserNamesList(users.getUserNames(), out);
    logger.info("Userlist has been sent");
  }
 public InetSocketAddress getLocalAddress() {
   Socket s = connection.getChannel().socket();
   InetAddress ia = s.getLocalAddress();
   int port = s.getLocalPort();
   return new InetSocketAddress(ia, port);
 }
 public String toString() {
   return getClientName() + " [" + s.getInetAddress() + "]";
 }