# Release 2.12.1

### Bug Fixes and Other Changes

          TimeoutsToUse.FINITE,
          isBoolean(method) ? Outcome.FAILURE : Outcome.HANG);
      addTests(
          suite,
          method,
          Scenario.SATISFIED_AND_OCCUPIED_BEFORE_ENTERING,
          TimeoutsToUse.INFINITE,
          isGuarded(method) ? Outcome.HANG : (isTryEnter(method) ? Outcome.FAILURE : Outcome.HANG));
      addTests(
          suite,
          method,

* 📝 Add warning about lifecycle events with `AsyncClient`. PR [#4167](https://github.com/tiangolo/fastapi/pull/4167) by [@andrew-chang-dewitt](https://github.com/andrew-chang-dewitt).
* ✏️ Fix typos in `/docs/reference/exceptions.md` and `/en/docs/reference/status.md`. PR [#10809](https://github.com/tiangolo/fastapi/pull/10809) by [@clarencepenz](https://github.com/clarencepenz).

 *  Fix: Don't leak file handles when a cache disk write fails.

 *  Fix: Don't hang when the public suffix database cannot be loaded. We had a bug where a failure
    reading the public suffix database would cause subsequent reads to hang when they should have
    crashed.

 *  Fix: Avoid `InetAddress.getCanonicalHostName()` in MockWebServer. This avoids problems if the

        .connect()
      fail<Any>()
    } catch (expected: ConnectException) {
    }
  }

  @Test
  fun shutdownWhileBlockedDispatching() {
    // Enqueue a request that'll cause MockWebServer to hang on QueueDispatcher.dispatch().
    val connection = server.url("/").toUrl().openConnection() as HttpURLConnection
    connection.setReadTimeout(500)
    try {
      connection.getResponseCode()
      fail<Any>()

//   - on xl.meta (array of versions) on disk to check for version disparity
//   - on rewrite dataDir on disk that must be additionally purged
//     only after as a 2-phase call, allowing the older dataDir to
//     hang-around in-case we need some form of recovery.
type RenameDataResp struct {
	Sign       []byte `msg:"s"`

    }
    assertThat(other.toString()).isEqualTo("MockWebServer{closed}")
  }

  @Test
  fun closeWhileBlockedDispatching() {
    // Enqueue a request that'll cause MockWebServer to hang on QueueDispatcher.dispatch().
    val connection = server.url("/").toUrl().openConnection() as HttpURLConnection
    connection.readTimeout = 500
    assertFailsWith<SocketTimeoutException> {
      connection.responseCode

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