diff --git a/README.md b/README.md
index 254e425..3fe04a6 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,21 @@
 ## Partie 1 : protocole TFTP
 
 ### Exercice 1 : Observation
+Côté client
+```
+tftp localhost 6969
+tftp> get test.html
+put test.html
+quit
+Transfer timed out.
 
+```
+
+Côté serveur
+```
+nc -u -l -p 6969
+test.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetasciitest.htmlnetascii
+```
 ### Exercice 2 : Décodage des requêtes.
 
 ### Exercice 3 : Acquitter
diff --git a/images/p1_ex1_tftp.pcapng b/images/p1_ex1_tftp.pcapng
new file mode 100755
index 0000000..482722d
Binary files /dev/null and b/images/p1_ex1_tftp.pcapng differ
diff --git a/src/main/java/pr/tp2/udp/tftp/TftpDecode.java b/src/main/java/pr/tp2/udp/tftp/TftpDecode.java
index 95ac82b..122efbd 100644
--- a/src/main/java/pr/tp2/udp/tftp/TftpDecode.java
+++ b/src/main/java/pr/tp2/udp/tftp/TftpDecode.java
@@ -1,23 +1,38 @@
 package pr.tp2.udp.tftp;
 
+import java.io.IOException;
 import java.net.DatagramPacket;
-
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.ServerSocket;
 public class TftpDecode {
 
-	public static void main(String[] args) {
+	public static void main(String[] args) throws IOException {
+		int portTFTP = 7777;
+		int portServeur= 6969;
+		InetAddress ipServeur = InetAddress.getByName("localhost");
+		try{
 		// Attends sur le port 6969
+		DatagramSocket dSocket = new DatagramSocket(portTFTP);
 
 		// Boucle
-
+		while (true) {
+		byte[] buffer = new byte[512];
 		// Reception du packet
-		DatagramPacket p = null;
+		DatagramPacket reception =new DatagramPacket(buffer, buffer.length);
+		dSocket.receive(reception);
 
 		// Affichage du packet
-
+		System.out.println(new String(buffer));
+		
 		// Attention à ne pas afficher plus d'informations que nécessaire.
 
 		// Décodage du packet
-		decodeRequest(p);
+		decodeRequest(reception);
+		}
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
 	}
 
 	public static void affiche(byte[] bytes) {