import socket

HOST = "0.0.0.0"
PORT = 10000

def main():
    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server.bind((HOST, PORT))
    server.listen(1)
    print(f"TCP сервер запущен на {HOST}:{PORT}")

    while True:
        conn, addr = server.accept()
        print(f"Подключение от {addr}")
        while True:
            data = conn.recv(1024)
            if not data:
                break
            modified = data.upper()
            conn.sendall(modified)
            if modified == b"EXIT":
                break
        conn.close()
        if modified == b"EXIT":
            break

    server.close()

if __name__ == "__main__":
    main()