import socket

HOST = "0.0.0.0"
PORT = 10001

def main():
    server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    server.bind((HOST, PORT))
    print(f"UDP сервер запущен на {HOST}:{PORT}")

    while True:
        data, addr = server.recvfrom(1024)
        print(f"Сообщение от {addr}: {data.decode()}")
        server.sendto(data.upper(), addr)

if __name__ == "__main__":
    main()