feat: Started basic implementation of socket comm

server/src/main/java/cz/jzitnik/server/Main.java

@@ -1,7 +1,18 @@
 package cz.jzitnik.server;
 
-public class Main {
-    static void main() {
+import jakarta.websocket.DeploymentException;
+import org.glassfish.tyrus.server.Server;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Scanner;
+
+public class Main {
+    static void main() throws DeploymentException {
+        Map<String, Object> properties = new HashMap<>();
+        Server server = new Server("localhost", 8025, "/", properties, WebSocket.class);
+
+        server.start();
+        new Scanner(System.in).nextLine();
     }
 }

server/src/main/java/cz/jzitnik/server/WebSocket.java

@@ -0,0 +1,53 @@
+package cz.jzitnik.server;
+
+import cz.jzitnik.common.socket.SocketMessage;
+import cz.jzitnik.common.socket.messages.Test;
+import jakarta.websocket.*;
+import jakarta.websocket.server.ServerEndpoint;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.*;
+
+@Slf4j
+@ServerEndpoint("/ws")
+public class WebSocket {
+
+    @OnOpen
+    public void onOpen(Session session) {
+        log.debug("Client connected: " + session.getId());
+
+        try {
+            SocketMessage response = new Test();
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            ObjectOutputStream oos = new ObjectOutputStream(baos);
+            oos.writeObject(response);
+            oos.flush();
+            session.getBasicRemote().sendBinary(java.nio.ByteBuffer.wrap(baos.toByteArray()));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    // Receive binary data from client
+    @OnMessage
+    public void onMessage(byte[] bytes, Session session) {
+        try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
+             ObjectInputStream ois = new ObjectInputStream(bais)) {
+
+            SocketMessage socketMessage = (SocketMessage) ois.readObject();
+            System.out.println("Received: " + socketMessage);
+        } catch (IOException | ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @OnClose
+    public void onClose(Session session, CloseReason reason) {
+        System.out.println("Connection closed: " + reason);
+    }
+
+    @OnError
+    public void onError(Session session, Throwable throwable) {
+        throwable.printStackTrace();
+    }
+}