From 135af82172b31d6fd406f241fda98f3c8d899657 Mon Sep 17 00:00:00 2001
From: Morph01 <145839520+Morph01@users.noreply.github.com>
Date: Tue, 25 Mar 2025 16:46:05 +0100
Subject: [PATCH] fix: basic client server on same port

---
 app/src/main/java/clientserver/Client.java | 31 ++++++++++++++++++++++
 app/src/main/java/clientserver/Server.java | 30 +++++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 app/src/main/java/clientserver/Client.java

diff --git a/app/src/main/java/clientserver/Client.java b/app/src/main/java/clientserver/Client.java
new file mode 100644
index 0000000..98bd287
--- /dev/null
+++ b/app/src/main/java/clientserver/Client.java
@@ -0,0 +1,31 @@
+package clientserver;
+
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+
+public class Client {
+    public static void main(String[] args) {
+        try {
+            // 1 - Création du canal avec un port libre
+            DatagramSocket socketClient = new DatagramSocket();
+            InetAddress adresseClient = InetAddress.getByName("localhost");
+            byte[] envoyees; // tampon d'émission
+            byte[] recues = new byte[1024]; // tampon de réception
+            // 2 - Émettre
+            String message = "hello serveur RX302";
+            envoyees = message.getBytes();
+            DatagramPacket messageEnvoye = new DatagramPacket(envoyees, envoyees.length, adresseClient, 6666);
+            socketClient.send(messageEnvoye);
+            // 3 - Recevoir
+            DatagramPacket paquetRecu = new DatagramPacket(recues, recues.length);
+            socketClient.receive(paquetRecu);
+            String reponse = new String(paquetRecu.getData(), 0, paquetRecu.getLength());
+            System.out.println(reponse + " @" + paquetRecu.getAddress() + ":" + paquetRecu.getPort());
+            // 4 - Libérer le canal
+            socketClient.close();
+        } catch (Exception e) {
+            System.err.println(e);
+        }
+    }
+}
diff --git a/app/src/main/java/clientserver/Server.java b/app/src/main/java/clientserver/Server.java
index ab8d74c..71ca9db 100644
--- a/app/src/main/java/clientserver/Server.java
+++ b/app/src/main/java/clientserver/Server.java
@@ -1,6 +1,9 @@
 package clientserver;
 
+import java.net.DatagramPacket;
 import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
 
 public class Server {
     static void scannerUDP(int startPort, int endPort) {
@@ -15,4 +18,31 @@ public class Server {
             System.out.println(e);
         }
     }
+
+    public static void main(String[] args) {
+        try {
+            // 1 - Création du canal
+            DatagramSocket socketServeur = new DatagramSocket(null);
+            // 2 - Réservation du port
+            InetSocketAddress adresse = new InetSocketAddress("localhost", 6666);
+            socketServeur.bind(adresse);
+            byte[] recues = new byte[1024]; // tampon d'émission
+            byte[] envoyees; // tampon de réception
+            // 3 - Recevoir
+            DatagramPacket paquetRecu = new DatagramPacket(recues, recues.length);
+            socketServeur.receive(paquetRecu);
+            InetAddress adrClient = paquetRecu.getAddress();
+            int prtClient = paquetRecu.getPort();
+            System.out.println("Nouveau client : @" + adrClient + ":" + prtClient);
+            // 4 - Émettre
+            String reponse = "Serveur RX302 ready";
+            envoyees = reponse.getBytes();
+            DatagramPacket paquetEnvoye = new DatagramPacket(envoyees, envoyees.length, adrClient, prtClient);
+            socketServeur.send(paquetEnvoye);
+            // 5 - Libérer le canal
+            socketServeur.close();
+        } catch (Exception e) {
+            System.err.println(e);
+        }
+    }
 }