network structure

app/src/main/java/network/Connexion.java

@@ -0,0 +1,27 @@
+package network;
+
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+import java.net.Socket;
+
+public abstract class Connexion implements PacketVisitor {
+	
+	final Socket socket;
+	private final ObjectOutputStream objectOutputStream;
+	private final ConnexionThread connexionThread;
+
+	public Connexion(Socket socket) throws IOException {
+		this.socket = socket;
+		this.objectOutputStream = new ObjectOutputStream(this.socket.getOutputStream());
+		this.connexionThread = new ConnexionThread(this);
+		this.connexionThread.start();
+	}
+
+	public void sendPacket(Packet packet) throws IOException {
+		objectOutputStream.writeObject(packet);
+	}
+
+	public void close() {
+		this.connexionThread.cancel();
+	}
+}

app/src/main/java/network/ConnexionThread.java

@@ -0,0 +1,39 @@
+package network;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+
+public class ConnexionThread extends Thread{
+
+	private final Connexion connexion;
+	private final ObjectInputStream objectInputStream;
+
+	public ConnexionThread(Connexion connexion) throws IOException {
+		this.connexion = connexion;
+		this.objectInputStream = new ObjectInputStream(this.connexion.socket.getInputStream());
+	}
+
+	@Override
+	public void run() {
+		while(!interrupted()) {
+			try {
+				Object o = objectInputStream.readObject();
+				if (o instanceof Packet packet) {
+					connexion.visit(packet);
+				}
+			} catch (ClassNotFoundException | IOException e) {
+				break;
+			}
+		}
+	}
+
+	public void cancel() {
+		try {
+			objectInputStream.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		interrupt();
+	}
+
+}

app/src/main/java/network/Packet.java

@@ -0,0 +1,11 @@
+package network;
+
+import java.io.Serializable;
+
+public abstract class Packet implements Serializable {
+
+	// public abstract int getId();
+
+	public abstract void accept(PacketVisitor packetVisitor);
+
+}

app/src/main/java/network/PacketFactory.java

@@ -0,0 +1,8 @@
+package network;
+
+import java.nio.ByteBuffer;
+
+public class PacketFactory {
+
+
+}

app/src/main/java/network/PacketVisitor.java

@@ -0,0 +1,15 @@
+package network;
+
+import network.packets.ConnexionInfoPacket;
+import network.packets.KeepAlivePacket;
+
+public interface PacketVisitor {
+
+	default void visit(Packet packet) {
+		packet.accept(this);
+	}
+	
+	void visit(ConnexionInfoPacket packet);
+	void visit(KeepAlivePacket packet);
+	
+}

app/src/main/java/network/Packets.java

@@ -0,0 +1,7 @@
+package network;
+
+public enum Packets {
+
+	ConnectionInfo, KeepAlive
+
+}

app/src/main/java/network/client/Client.java

@@ -0,0 +1,17 @@
+package network.client;
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+
+public class Client {
+	private final ClientConnexion clientConnection;
+
+	public Client(String address, short port) throws UnknownHostException, IOException {
+		this.clientConnection = new ClientConnexion(address, port);
+	}
+
+	public void stop() {
+		this.clientConnection.close();
+	}
+	
+}

app/src/main/java/network/client/ClientConnexion.java

@@ -0,0 +1,33 @@
+package network.client;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.net.UnknownHostException;
+
+import network.Connexion;
+import network.packets.ConnexionInfoPacket;
+import network.packets.KeepAlivePacket;
+
+public class ClientConnexion extends Connexion {
+
+	public ClientConnexion(String address, short port) throws UnknownHostException, IOException {
+		super(new Socket(address, port));
+	}
+
+	@Override
+	public void visit(ConnexionInfoPacket packet) {
+		
+	}
+
+	@Override
+	public void visit(KeepAlivePacket packet) {
+		System.out.println("Coucou !!!!!!!!!!!!!!!!!!!");
+		try {
+			sendPacket(packet);
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+	}
+
+}

app/src/main/java/network/client/PacketDispatcher.java

@@ -0,0 +1,31 @@
+package network.client;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import network.Packet;
+import network.PacketVisitor;
+
+public class PacketDispatcher {
+
+	private final List<PacketVisitor> handlers;
+
+	public PacketDispatcher() {
+		this.handlers = new ArrayList<>();
+	}
+
+	public void dispatch(Packet packet) {
+		for (PacketVisitor handler : handlers) {
+			handler.visit(packet);
+		}
+	}
+
+	public void registerHandler(PacketVisitor handler) {
+		handlers.add(handler);
+	}
+
+	public void unregisterHandler(PacketVisitor handler) {
+		handlers.remove(handler);
+	}
+
+}

app/src/main/java/network/packets/ConnexionInfoPacket.java

@@ -0,0 +1,25 @@
+package network.packets;
+
+import network.Packet;
+import network.PacketVisitor;
+import network.Packets;
+
+public class ConnexionInfoPacket extends Packet {
+
+	static private final long serialVersionUID = Packets.ConnectionInfo.ordinal();
+
+	private final int connectionId;
+
+	public ConnexionInfoPacket(int connectionId) {
+		this.connectionId = connectionId;
+	}
+
+	public int getConnectionId() {
+		return connectionId;
+	}
+	
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visit(this);
+	}
+}

app/src/main/java/network/packets/KeepAlivePacket.java

@@ -0,0 +1,26 @@
+package network.packets;
+
+import network.Packet;
+import network.PacketVisitor;
+import network.Packets;
+
+public class KeepAlivePacket extends Packet {
+
+	static private final long serialVersionUID = Packets.KeepAlive.ordinal();
+
+	private final long keepAliveId;
+
+	public KeepAlivePacket(long keepAliveId) {
+		this.keepAliveId = keepAliveId;
+	}
+
+	public long getKeepAliveId() {
+		return keepAliveId;
+	}
+
+	@Override
+	public void accept(PacketVisitor packetVisitor) {
+		packetVisitor.visit(this);
+	}
+
+}

app/src/main/java/network/server/Server.java

@@ -0,0 +1,28 @@
+package network.server;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Server {
+
+	final ServerSocket serverSocket;
+	final List<ServerConnexion> connexions;
+	private final ServerThread thread;
+
+	public Server(short port) throws IOException {
+		this.serverSocket = new ServerSocket(port);
+		this.connexions = new ArrayList<>();
+		this.thread = new ServerThread(this);
+		this.thread.start();
+	}
+
+	public void stop() {
+		this.thread.cancel();
+		for (ServerConnexion connexion : this.connexions) {
+			connexion.close();
+		}
+	}
+
+}

app/src/main/java/network/server/ServerConnexion.java

@@ -0,0 +1,35 @@
+package network.server;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.util.Random;
+
+import network.Connexion;
+import network.packets.ConnexionInfoPacket;
+import network.packets.KeepAlivePacket;
+
+public class ServerConnexion extends Connexion{
+
+	public ServerConnexion(Socket socket) throws IOException {
+		super(socket);
+		System.out.println("Bonjour le client !");
+		sendKeepAlive();
+	}
+
+	public void sendKeepAlive() throws IOException {
+		Random r = new Random();
+		sendPacket(new KeepAlivePacket(r.nextLong()));
+	}
+
+	@Override
+	public void visit(ConnexionInfoPacket packet) {
+		// TODO Auto-generated method stub
+		throw new UnsupportedOperationException("Unimplemented method 'visit'");
+	}
+
+	@Override
+	public void visit(KeepAlivePacket packet) {
+		System.out.println("Je l'ai reçu !");
+	}
+	
+}

app/src/main/java/network/server/ServerThread.java

@@ -0,0 +1,36 @@
+package network.server;
+
+import java.io.IOException;
+import java.net.Socket;
+
+public class ServerThread extends Thread {
+
+	private final Server server;
+
+	public ServerThread(Server server) {
+		this.server = server;
+	}
+
+	public void cancel() {
+		try {
+			this.server.serverSocket.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		interrupt();
+	}
+
+	@Override
+	public void run() {
+		try {
+			while(!interrupted()) {
+				Socket newConnection = this.server.serverSocket.accept();
+				ServerConnexion serverConnection = new ServerConnexion(newConnection);
+				this.server.connexions.add(serverConnection);
+			}
+		} catch(IOException e) {
+			// e.printStackTrace();
+		}
+	}
+
+}