diff --git a/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt b/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt
index b3f3f28..7dddfb1 100644
--- a/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt
+++ b/Implementation/chatapp/build/tmp/compileJava/source-classes-mapping.txt
@@ -1,41 +1,41 @@
-chatapp/View/ConnexionScreen.java
- chatapp.View.ConnexionScreen
+chatapp/Model/Utilisateur.java
+ chatapp.Model.Utilisateur
 chatapp/Launcher.java
  chatapp.Launcher
 chatapp/Model/MessageHorodate.java
  chatapp.Model.MessageHorodate
+chatapp/Model/DataBase.java
+ chatapp.Model.DataBase
+chatapp/Protocol/RunnerEcouteTCP.java
+ chatapp.Protocol.RunnerEcouteTCP
 chatapp/View/FenetreSession.java
  chatapp.View.FenetreSession
  chatapp.View.FenetreSession$1
-chatapp/View/View_Menu.java
- chatapp.View.View_Menu
-chatapp/Model/DataBase.java
- chatapp.Model.DataBase
+chatapp/Controller/ChatApp.java
+ chatapp.Controller.ChatApp
 chatapp/View/ChangementPseudo.java
  chatapp.View.ChangementPseudo
-chatapp/View/Clavardage.java
- chatapp.View.Clavardage
- chatapp.View.Clavardage$1
-chatapp/Model/Utilisateur.java
- chatapp.Model.Utilisateur
-chatapp/Protocol/RunnerEcouteTCP.java
- chatapp.Protocol.RunnerEcouteTCP
+chatapp/Protocol/RunnerEcouteUDP.java
+ chatapp.Protocol.RunnerEcouteUDP
+chatapp/Model/ListUtilisateurs.java
+ chatapp.Model.ListUtilisateurs
 chatapp/Protocol/UDPEchange.java
  chatapp.Protocol.RunnerUDP
  chatapp.Protocol.UDPEchange
-chatapp/Controller/ChatApp.java
- chatapp.Controller.ChatApp
 chatapp/Main.java
  chatapp.Main
+chatapp/View/Clavardage.java
+ chatapp.View.Clavardage
+ chatapp.View.Clavardage$1
 chatapp/Protocol/SessionClavardage.java
  chatapp.Protocol.SessionClavardage
-chatapp/Protocol/RunnerEcouteUDP.java
- chatapp.Protocol.RunnerEcouteUDP
+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/HttpEchange.java
  chatapp.Protocol.HttpEchange
 chatapp/View/DemarrerSession.java
  chatapp.View.DemarrerSession
-chatapp/Model/ListUtilisateurs.java
- chatapp.Model.ListUtilisateurs
diff --git a/Implementation/chatapp/src/main/java/chatapp/Protocol/SessionClavardage.java b/Implementation/chatapp/src/main/java/chatapp/Protocol/SessionClavardage.java
index 5733d9f..e3f20b4 100644
--- a/Implementation/chatapp/src/main/java/chatapp/Protocol/SessionClavardage.java
+++ b/Implementation/chatapp/src/main/java/chatapp/Protocol/SessionClavardage.java
@@ -84,6 +84,7 @@ public class SessionClavardage extends Thread {
         this.derniersMsg = new ArrayList<MessageHorodate>();
         this.pcs = new PropertyChangeSupport(this);
         this.start();
+        this.initierSession();
         Platform.runLater( () ->
                 new FenetreSession(this)
         );
@@ -117,6 +118,18 @@ public class SessionClavardage extends Thread {
         }
     }
 
+    public void initierSession(){
+        String isExterne = "false";
+        if(this.app.isExterne()){
+            isExterne="true";
+        }
+        MessageHorodate msgh = new MessageHorodate(getU2(),getApp().getMe(),isExterne,3);
+        try {
+            getOut().writeObject(msgh.toString());
+        } catch (IOException e) {
+            //e.printStackTrace();
+        }
+    }
     /**
       * Methode transformant prenant un string pour le transmettre sous la forme d'un message horodate a l'utilisateur distant
       * @param msg le texte du message a envoyer
@@ -170,8 +183,12 @@ public class SessionClavardage extends Thread {
                 }
                 break;
             }
+            else if(msg.getType() == 3) {
+                System.out.println("Session Initiee");
+            }
+            else{
             derniersMsg.add(msg);
-            pcs.firePropertyChange("MessageRecu",false,true);
+            pcs.firePropertyChange("MessageRecu",false,true);}
 
         }
     }