diff --git a/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt b/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt
index 5e28384..acaf915 100644
--- a/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt
+++ b/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt
@@ -13,15 +13,14 @@ chatapp/Protocol/RunnerEcouteTCP.java
 chatapp/View/FenetreSession.java
  chatapp.View.FenetreSession
  chatapp.View.FenetreSession$1
-chatapp/View/DemarrerSession.java
- chatapp.View.DemarrerSession
+chatapp/Protocol/HttpEchange.java
+ chatapp.Protocol.HttpEchange
 chatapp/View/ChangementPseudo.java
  chatapp.View.ChangementPseudo
-chatapp/Protocol/RunnerEcouteUDP.java
- chatapp.Protocol.RunnerEcouteUDP
-chatapp/Protocol/UDPEchange.java
- chatapp.Protocol.RunnerUDP
- chatapp.Protocol.UDPEchange
+chatapp/View/View_Menu.java
+ chatapp.View.View_Menu
+chatapp/View/DemarrerSession.java
+ chatapp.View.DemarrerSession
 chatapp/Main.java
  chatapp.Main
 chatapp/View/Clavardage.java
@@ -33,9 +32,10 @@ chatapp/View/ConnexionScreen.java
  chatapp.View.ConnexionScreen
 chatapp/View/View_Utilisateurs.java
  chatapp.View.View_Utilisateurs
-chatapp/View/View_Menu.java
- chatapp.View.View_Menu
+chatapp/Protocol/UDPEchange.java
+ chatapp.Protocol.RunnerUDP
+ chatapp.Protocol.UDPEchange
 chatapp/Controller/ChatApp.java
  chatapp.Controller.ChatApp
-chatapp/Protocol/HttpEchange.java
- chatapp.Protocol.HttpEchange
+chatapp/Protocol/RunnerEcouteUDP.java
+ chatapp.Protocol.RunnerEcouteUDP
diff --git a/Implementation/chatapp/src/main/java/chatapp/Protocol/UDPEchange.java b/Implementation/chatapp/src/main/java/chatapp/Protocol/UDPEchange.java
index 956f84e..a6fdcf2 100644
--- a/Implementation/chatapp/src/main/java/chatapp/Protocol/UDPEchange.java
+++ b/Implementation/chatapp/src/main/java/chatapp/Protocol/UDPEchange.java
@@ -24,7 +24,7 @@ import chatapp.Model.*;
  */
 public class UDPEchange {
 
-    private static Boolean Connecte = true;
+    private static Boolean Connecte = false;
     // True si l'utilisateur peut se connecter avec ce nom d'utilisateur , False sinon
 
     private static Boolean EcouteEnCours = false;
@@ -160,17 +160,19 @@ public class UDPEchange {
      * @param Message correspond au message à transmettre a l'utilisateur
      */
     public static void envoiUnicast( InetAddress Adress , String Message ) throws IOException {
-        DatagramSocket socket = new DatagramSocket();
-        byte[]buffer = Message.getBytes();
-        DatagramPacket packet = new DatagramPacket( buffer, buffer.length,  Adress, 1234 );
-        socket.send(packet);
-        socket.close();
-        System.out.println("***********Message envoye***********");
-        System.out.println("Dest Ip: " + Adress.toString());
-        System.out.println("Dest port: " + String.valueOf(1234));
-        System.out.println("Contenu: ");
-        System.out.println(Message);
-        System.out.println("************************************");
+        if (UDPEchange.getConnecte()){
+            DatagramSocket socket = new DatagramSocket();
+            byte[]buffer = Message.getBytes();
+            DatagramPacket packet = new DatagramPacket( buffer, buffer.length,  Adress, 1234 );
+            socket.send(packet);
+            socket.close();
+            System.out.println("***********Message envoye***********");
+            System.out.println("Dest Ip: " + Adress.toString());
+            System.out.println("Dest port: " + String.valueOf(1234));
+            System.out.println("Contenu: ");
+            System.out.println(Message);
+            System.out.println("************************************");
+        }
     }
 
     /**