{"status": "online", "server": "Hub WebSocket Server", "port": 8445, "stats": {"rooms_count": 0, "total_clients": 0}, "rooms": {}, "endpoints": {"websocket": "wss://localhost:8445/ws?room=YOUR_ROOM_ID", "status": "https://localhost:8445/"}, "protocol": {"json": {"broadcast": {"action": "...", "data": "..."}, "targeted": {"to": 123, "action": "...", "data": "..."}, "received": {"from": 456, "action": "...", "data": "..."}}, "binary": {"format_send": "2 bytes ID (big-endian) + data", "broadcast_id": 0, "format_receive": "2 bytes sender ID (big-endian) + data"}, "client_ids": "1-65535 (2 bytes)"}}