refactor: split server into mutliples methods

app/src/main/java/clientserver/server/ClientHandler.java

@@ -1,97 +0,0 @@
-package clientserver.server;
-
-import java.net.DatagramPacket;
-import java.net.DatagramSocket;
-import java.net.InetAddress;
-import java.net.InetSocketAddress;
-
-public class ClientHandler {
-
-    public static void main(String[] args) {
-        int port = 6666;
-        boolean running = true;
-        DatagramSocket socketServer = null;
-        try {
-            socketServer = new DatagramSocket(null);
-            // 2 - Réservation du port
-            InetSocketAddress address = new InetSocketAddress(
-                "localhost",
-                port
-            );
-            socketServer.bind(address);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        while (running) {
-            try {
-                // 1 - Création du canal
-
-                // 3 - Recevoir
-                byte[] recues = new byte[1024]; // tampon de réception
-                DatagramPacket receivedPacket = new DatagramPacket(
-                    recues,
-                    recues.length
-                );
-                socketServer.receive(receivedPacket);
-                InetAddress clientAddress = receivedPacket.getAddress();
-                int clientPort = receivedPacket.getPort();
-                System.out.println(
-                    "Nouveau client : @" + clientAddress + ":" + clientPort
-                );
-                DatagramSocket socket = new DatagramSocket(); // Reserve new port
-
-                String response = "PORT:" + socket.getLocalPort();
-                System.out.println(response);
-                byte[] envoyees; // tampon d'émission
-                envoyees = response.getBytes();
-                DatagramPacket packetToSend = new DatagramPacket(
-                    envoyees,
-                    envoyees.length,
-                    clientAddress,
-                    clientPort
-                );
-                socketServer.send(packetToSend);
-                Thread thread = new Thread(() -> createThread(socket));
-                thread.start();
-            } catch (Exception e) {
-                System.err.println(e);
-            }
-        }
-
-        socketServer.close();
-    }
-
-    public static void createThread(DatagramSocket socketClientThread) {
-        try {
-            byte[] recues = new byte[1024]; // tampon de réception
-            DatagramPacket receivedPacket = new DatagramPacket(
-                recues,
-                recues.length
-            );
-            socketClientThread.receive(receivedPacket);
-            String message = new String(
-                receivedPacket.getData(),
-                0,
-                receivedPacket.getLength()
-            );
-            System.out.println("Received message: " + message);
-        } catch (Exception e) {
-            System.err.println(e);
-        }
-    }
-
-    static void scannerUDP(int startPort, int endPort) {
-        try {
-            for (int i = startPort; i < endPort; i++) {
-                try (DatagramSocket socket = new DatagramSocket(i)) {} catch (
-                    Exception e
-                ) {
-                    System.out.println("Port n°" + i + " déjà occupé");
-                }
-            }
-        } catch (Exception e) {
-            System.out.println(e);
-        }
-    }
-}