pitiupi.chat/src/pitiupi/chat/GUI/ChatWindow.java

@@ -94,7 +94,7 @@ public class ChatWindow extends javax.swing.JDialog {
         if (jTextArea1.getText().trim().length() == 0) {
             return;
         }
-        ChatMessage message = new ChatMessage(mainWindow.getUserName(), jTextArea1.getText());
+        ChatMessage message = new ChatMessage(mainWindow.getName(), jTextArea1.getText());
         this.sendChatMessage(message);
         jTextArea1.setText("");
     }

pitiupi/src/pitiupi/GUI/Login.java

@@ -1,3 +1,8 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
 package pitiupi.GUI;
 
 import java.awt.BorderLayout;
@@ -6,7 +11,6 @@ import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
 import java.awt.event.ActionEvent;
-import java.util.prefs.Preferences;
 
 import javax.swing.JButton;
 import javax.swing.JDialog;
@@ -22,10 +26,6 @@ import javax.swing.JTextField;
  */
 public final class Login extends JDialog {
 
-    private static final Preferences prefs = Preferences.userNodeForPackage(Login.class);
-    private static final String PREF_NOME = "lastUserName";
-    private static final String PREF_PORTA = "lastPort";
-
     JLabel nameLabel = new JLabel("Name: ");
     JLabel portLabel = new JLabel("Port: ");
 
@@ -44,12 +44,8 @@ public final class Login extends JDialog {
     public void initComponents() {
         this.setTitle("Login");
 
-
-        String nomeSalvo = prefs.get(PREF_NOME, System.getProperty("user.name"));
-        int portaSalva = prefs.getInt(PREF_PORTA, 8000);
-
-        portField.setModel(new javax.swing.SpinnerNumberModel(portaSalva, 8000, 9000, 1));
-        nameField.setText(nomeSalvo);
+        portField.setModel(new javax.swing.SpinnerNumberModel(8000, 8000, 9000, 1));
+        nameField.setText(System.getProperty("user.name"));
 
         JPanel topPanel = new JPanel(new GridBagLayout());
         JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
@@ -87,19 +83,17 @@ public final class Login extends JDialog {
         this.add(topPanel);
         this.add(buttonPanel, BorderLayout.SOUTH);
 
+
         okButton.addActionListener((ActionEvent e) -> {
             try {
                 portField.commitEdit();
             } catch (java.text.ParseException ex) {
                 return;
             }
-
-            prefs.put(PREF_NOME, nameField.getText());
-            prefs.putInt(PREF_PORTA, (Integer) portField.getValue());
-
             Login.this.setVisible(false);
         });
 
+
         cancelButton.addActionListener((ActionEvent e) -> {
             System.exit(0);
         });

pitiupi/src/pitiupi/control/HeartbeatManager.java

@@ -14,7 +14,6 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 import pitiupi.GUI.MainWindow;
 import pitiupi.net.HeartbeatMessage;
-import java.util.UUID;
 /**
  *
  * @author tony
@@ -28,7 +27,6 @@ public class HeartbeatManager {
     private final Map<String, PeerInfo> peers = new ConcurrentHashMap<>();
     private final List<PeerListener> listeners = new CopyOnWriteArrayList<>();
     private ScheduledExecutorService scheduler;
-    private final String instanceId = UUID.randomUUID().toString();
 
     public HeartbeatManager(MainWindow mainWindow) {
         this.mainWindow = mainWindow;
@@ -48,21 +46,21 @@ public class HeartbeatManager {
 
     private void announce() {
         try {
-            HeartbeatMessage msg = new HeartbeatMessage(mainWindow.getUserName(), instanceId);
+            HeartbeatMessage msg = new HeartbeatMessage(mainWindow.getUserName());
             mainWindow.getSocket().send(msg.toByteArray());
         } catch (IOException ex) {
             Logger.getLogger(HeartbeatManager.class.getName()).log(Level.WARNING, "Falha ao enviar heartbeat", ex);
         }
     }
 
-    
+    // Chamado pelo Socket quando um pacote é identificado como heartbeat
     public void receiveHeartbeat(HeartbeatMessage msg, InetAddress from) {
         // ignora o próprio heartbeat 
-        if (msg.getInstanceId().equals(instanceId) ) {
+        if (msg.getUserName().equals(mainWindow.getUserName())) {
             return;
         }
 
-        String key =  msg.getInstanceId();
+        String key = from.getHostAddress() + "#" + msg.getUserName();
         boolean isNew = !peers.containsKey(key);
 
         PeerInfo peer = peers.computeIfAbsent(key, k -> new PeerInfo(msg.getUserName(), from, msg.getTimestamp()));

pitiupi/src/pitiupi/net/HeartbeatMessage.java

@@ -7,11 +7,9 @@ public class HeartbeatMessage extends Message {
 
     private final String userName;
     private final long timestamp;
-    private final String instanceId; 
 
-    public HeartbeatMessage(String userName, String instanceId) {
+    public HeartbeatMessage(String userName) {
         this.userName = userName;
-        this.instanceId = instanceId;
         this.timestamp = System.currentTimeMillis();
     }
 
@@ -22,8 +20,4 @@ public class HeartbeatMessage extends Message {
     public long getTimestamp() {
         return timestamp;
     }
-
-    public String getInstanceId() {
-        return instanceId;
-    }
 }