}
  }

  private fun send404(
    stream: Http2Stream,
    path: String,
  ) {
    val responseHeaders =
      listOf(
        Header(":status", "404"),
        Header(":version", "HTTP/1.1"),
        Header("content-type", "text/plain"),
      )
    stream.writeHeaders(
      responseHeaders = responseHeaders,
      outFinished = false,

$ OPENAPI_URL= uvicorn main:app

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

⤴️ 🚥 👆 🚶 📛 `/openapi.json`, `/docs`, ⚖️ `/redoc` 👆 🔜 🤚 `404 Not Found` ❌ 💖:

```JSON
{
    "detail": "Not Found"
}

                }
                if (httpStatusCode == 404) {
                    storeChildUrlsToQueue(urlQueue, getAnchorSet(document.get(fessConfig.getIndexFieldAnchor())));
                    if (!indexingHelper.deleteDocument(searchEngineClient, id)) {
                        logger.debug("Failed to delete 404 document: {}", url);
                    }
                    return false;
                }

     * The HTTP status code for Forbidden.
     */
    public static final int FORBIDDEN_STATUS_CODE = 403;

    /**
     * The HTTP status code for Not Found.
     */
    public static final int NOT_FOUND_STATUS_CODE = 404;

    /**
     * The HTTP status code for Server Error.
     */
    public static final int SERVER_ERROR_STATUS_CODE = 500;

    /**
     * A constant for no transformer.
     */

$ OPENAPI_URL= uvicorn main:app

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

すると、以下のように `/openapi.json`, `/docs`, `/redoc` のどのURLにアクセスしても、 `404 Not Found` エラーが返ってくるようになります。

```JSON
{
    "detail": "Not Found"
}

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Then if you go to the URLs at `/openapi.json`, `/docs`, or `/redoc` you will just get a `404 Not Found` error like:

```JSON
{
    "detail": "Not Found"
}

	MOVFW	R1, CPSR           // ERROR "illegal combination"
	BFX	$12, $41, R2, R3   // ERROR "wrong width or LSB"
	BFX	$12, $-2, R2       // ERROR "wrong width or LSB"
	BFXU	$40, $4, R2, R3    // ERROR "wrong width or LSB"
	BFXU	$-40, $4, R2       // ERROR "wrong width or LSB"
	BFX	$-2, $4, R2, R3    // ERROR "wrong width or LSB"
	BFXU	$4, R2, R5, R2     // ERROR "missing or wrong LSB"

    }

    public void test_setError_withMessage_noRequest() {
        // Test setError with message when no HTTP request is available
        try {
            WebApiUtil.setError(404, "Not Found");
        } catch (Exception e) {
            fail("setError should handle missing request gracefully: " + e.getMessage());
        }
    }

    public void test_setError_withException_noRequest() {

        br.addNotice("Too long boundary size so treats it as 404.");
        br.addItem("Advice");
        br.addElement("Against for CVE-2014-0050 (JVN14876762).");
        br.addElement("Boundary size is limited by Framework.");
        br.addElement("Too long boundary is treated as 404 because it's thought of as attack.");
        br.addElement("");

* **`400`** e acima são para respostas de "Erro do cliente". Este é o segundo tipo que você provavelmente mais usaria.
    * Um exemplo é `404`, para uma resposta "Não encontrado".
    * Para erros genéricos do cliente, você pode usar apenas `400`.