121 lines
4.0 KiB
Java
121 lines
4.0 KiB
Java
package clientserver;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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public class ClientHandler {
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static void main(String[] args) {
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int port = 6666;
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boolean running = true;
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DatagramSocket socketServer = null;
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while (running) {
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try {
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// 1 - Création du canal
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socketServer = new DatagramSocket(null);
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// 2 - Réservation du port
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InetSocketAddress address = new InetSocketAddress(
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"localhost",
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port
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);
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socketServer.bind(address);
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// 3 - Recevoir
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byte[] recues = new byte[1024]; // tampon de réception
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DatagramPacket receivedPacket = new DatagramPacket(
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recues,
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recues.length
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);
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socketServer.receive(receivedPacket);
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Thread thread = new Thread(() -> createThread(receivedPacket));
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thread.start();
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} catch (Exception e) {
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System.err.println(e);
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}
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}
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socketServer.close();
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}
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public static void createThread(DatagramPacket packet) {
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try {
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InetAddress clientAddress = packet.getAddress();
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int clientPort = packet.getPort();
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System.out.println(
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"Nouveau client : @" + clientAddress + ":" + clientPort
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);
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DatagramSocket socket = new DatagramSocket(); // Reserve new port
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String response = "PORT:" + socket.getLocalPort();
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byte[] envoyees; // tampon d'émission
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envoyees = response.getBytes();
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DatagramPacket packetToSend = new DatagramPacket(
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envoyees,
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envoyees.length,
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clientAddress,
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clientPort
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);
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socket.send(packetToSend);
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} catch (Exception e) {
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System.err.println(e);
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}
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}
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static void scannerUDP(int startPort, int endPort) {
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try {
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for (int i = startPort; i < endPort; i++) {
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try (DatagramSocket socket = new DatagramSocket(i)) {} catch (
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Exception e
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) {
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System.out.println("Port n°" + i + " déjà occupé");
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}
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}
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} catch (Exception e) {
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System.out.println(e);
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}
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}
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// public static void main(String[] args) {
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// try {
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// // 1 - Création du canal
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// DatagramSocket socketServeur = new DatagramSocket(null);
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// // 2 - Réservation du port
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// InetSocketAddress adresse = new InetSocketAddress(
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// "localhost",
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// 6666
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// );
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// socketServeur.bind(adresse);
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// byte[] recues = new byte[1024]; // tampon d'émission
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// byte[] envoyees; // tampon de réception
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// // 3 - Recevoir
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// DatagramPacket paquetRecu = new DatagramPacket(
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// recues,
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// recues.length
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// );
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// socketServeur.receive(paquetRecu);
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// InetAddress adrClient = paquetRecu.getAddress();
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// int prtClient = paquetRecu.getPort();
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// System.out.println(
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// "Nouveau client : @" + adrClient + ":" + prtClient
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// );
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// // 4 - Émettre
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// String reponse = "Serveur RX302 ready";
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// envoyees = reponse.getBytes();
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// DatagramPacket paquetEnvoye = new DatagramPacket(
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// envoyees,
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// envoyees.length,
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// adrClient,
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// prtClient
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// );
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// socketServeur.send(paquetEnvoye);
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// // 5 - Libérer le canal
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// socketServeur.close();
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// } catch (Exception e) {
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// System.err.println(e);
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// }
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// }
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}
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