basic client/server structure

ChatApp/src/server/Server.java

@@ -0,0 +1,52 @@
+package server;
+
+import java.net.DatagramSocket;
+import java.net.InetSocketAddress;
+import java.net.SocketException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
+
+import network.PacketHandler;
+import network.SocketReader;
+import network.protocol.Packet;
+
+public class Server implements PacketHandler {
+
+	private final DatagramSocket serverSocket;
+	private final Map<InetSocketAddress, ServerConnexion> connexions;
+	private final SocketReader reader;
+	private final ArrayList<String> roomNames;
+
+	public Server(int port) throws SocketException {
+		this.serverSocket = new DatagramSocket(port);
+		this.connexions = new HashMap<>();
+		this.reader = new SocketReader(serverSocket, this);
+		this.roomNames = new ArrayList<>();
+	}
+
+	public ArrayList<String> getRoomNames() {
+		return roomNames;
+	}
+
+	public void close() {
+		this.reader.stop();
+	}
+
+	public boolean hasChatterName(String pseudo) {
+		for (var entry : this.connexions.entrySet()) {
+			if (pseudo.equals(entry.getValue().getChatterName()))
+				return true;
+		}
+		return false;
+	}
+
+	@Override
+	public void handlePacket(Packet packet, InetSocketAddress address) {
+		if (!connexions.containsKey(address)) {
+			this.connexions.put(address, new ServerConnexion(this, serverSocket, address));
+		}
+		this.connexions.get(address).visit(packet);
+	}
+
+}

ChatApp/src/server/ServerConnexion.java

@@ -0,0 +1,98 @@
+package server;
+
+import java.io.IOException;
+import java.net.DatagramSocket;
+import java.net.InetSocketAddress;
+
+import network.SocketWriter;
+import network.protocol.Packet;
+import network.protocol.PacketVisitor;
+import network.protocol.packets.ChatMessagePacket;
+import network.protocol.packets.CreateRoomPacket;
+import network.protocol.packets.JoinRoomPacket;
+import network.protocol.packets.LeaveRoomPacket;
+import network.protocol.packets.LoginPacket;
+import network.protocol.packets.RequestRoomListPacket;
+import network.protocol.packets.RoomListPacket;
+import network.protocol.packets.SendChatMessagePacket;
+import network.protocol.packets.ServerResponsePacket;
+import network.protocol.packets.ServerResponsePacket.Response;
+
+public class ServerConnexion implements PacketVisitor {
+
+	private final Server server;
+	private final InetSocketAddress clientAddress;
+	private final SocketWriter writer;
+	private String chatterName;
+
+	public ServerConnexion(Server server, DatagramSocket socket, InetSocketAddress clientAddress) {
+		this.clientAddress = clientAddress;
+		this.server = server;
+		this.writer = new SocketWriter(socket);
+	}
+
+	public String getChatterName() {
+		return this.chatterName;
+	}
+
+	public void sendPacket(Packet packet) {
+		try {
+			this.writer.sendPacket(packet, clientAddress);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
+	@Override
+	public void visitPacket(ChatMessagePacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(CreateRoomPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(JoinRoomPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(LeaveRoomPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(LoginPacket packet) {
+		if (server.hasChatterName(packet.getPseudo())) {
+			sendPacket(new ServerResponsePacket(Response.AuthError));
+			return;
+		}
+
+		this.chatterName = packet.getPseudo();
+		sendPacket(new RoomListPacket(server.getRoomNames()));
+		System.out.println("[Server] Chatter " + packet.getPseudo() + " connected !");
+	}
+
+	@Override
+	public void visitPacket(RequestRoomListPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(RoomListPacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(SendChatMessagePacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+	@Override
+	public void visitPacket(ServerResponsePacket packet) {
+		throw new UnsupportedOperationException("Unimplemented method 'visitPacket'");
+	}
+
+}