---
title: Rust SDK 0.9.12
summary: null
url: https://www.fastly.com/documentation/reference/changes/2024/04/rust-sdk-0.9.12
---

## Added

- Added `Secret::try_plaintext()` to allow explicit handling of Secret Store decryption failures.

## Changed

- Improved the clarity of some docstrings.

## Fixed

- Fixed `Request::get_tls_raw_client_certificate()` so that it returns `None` when the client has not provided a client certificate. It previously returned `Some("")` in this case.
- Fixed `Request::get_tls_raw_client_certificate_bytes()` so that it returns `None` when the client has not provided a client certificate. It previously returned `Some(&[])` in this case.
- Fixed a bug in `BackendBuilder` that caused `BackendCreationError::HostError(FastlyStatus::INVAL)` to be returned in rare circumstances when a valid client certificate was set.
- Fixed behavior of some `_str()` variants of header methods that could cause panics when header values contained valid UTF-8 but not valid ASCII bytes.