def get_limiter_key(request: Request):
    current_key = request.scope.get("client")[0]
    request_headers = request.scope.get("headers")
    limiter_prefix = request.scope.get("root_path") + request.scope.get("path") + ":"

    for headers in request_headers:
        if headers[0].decode() == "authorization":
            current_key = headers[1].decode()
            break

        if headers[0].decode() in ("user-agent", "x-real-ip"):
            current_key += headers[1].decode()

    # shorter key
    hash_object = hashlib.sha256(current_key.encode())
    current_key = hash_object.hexdigest()

    limiter_key = re.sub(
        r":{1,}",
        ":",
        re.sub(r"/{1,}", ":", limiter_prefix + current_key),
    )
    return limiter_key