通过仅使用 `BackgroundTasks` (而不是 `BackgroundTask`)，使得能将它作为 *路径操作函数* 的参数 ，并让**FastAPI**为您处理其余部分, 就像直接使用 `Request` 对象。

在FastAPI中仍然可以单独使用 `BackgroundTask`，但您必须在代码中创建对象，并返回包含它的Starlette `Response`。

更多细节查看 <a href="https://www.starlette.dev/background/" class="external-link" target="_blank">Starlette's official docs for Background Tasks</a>.

## 告诫

				"AWSAccessKeyId": accessKey,
			},
			expected: ErrSignatureDoesNotMatch,
		},
		// (6) Should not error signature matches with extra query params.
		{
			queryParams: map[string]string{
				"response-content-disposition": "attachment; filename=\"4K%2d4M.txt\"",
			},
			expected: ErrNone,
		},
		// (7) Should not error signature matches with no special query params.
		{
			queryParams: map[string]string{},

        };

        // Test with timeout set
        client.setAccessTimeout(10);
        try {
            ResponseData result = client.doGet("ftp://localhost/test.txt");
            assertNotNull("Response should not be null", result);
            assertEquals(200, result.getHttpStatusCode());
        } catch (Exception e) {
            fail("Should not throw exception: " + e.getMessage());
        }

    /**
     * Retrieves the node status information for the specified NetBIOS address.
     *
     * @param nbtAddress the NetBIOS address to query
     * @return the node status responses
     * @throws UnknownHostException if the node status cannot be retrieved
     */
    NetbiosAddress[] getNodeStatus(NetbiosAddress nbtAddress) throws UnknownHostException;

    /**

        writeTimeoutMillis = client.writeTimeoutMillis,
      )

    var calledNoMoreExchanges = false
    try {
      val response = chain.proceed(originalRequest)
      if (isCanceled()) {
        response.closeQuietly()
        throw IOException("Canceled")
      }
      return response
    } catch (e: IOException) {
      calledNoMoreExchanges = true
      throw noMoreExchanges(e) as Throwable
    } finally {

	payloadLength := messageLength - 4 - 4 - 4 - headerLength - 4
	return payloadLength
}

// continuationMessage - S3 periodically sends this message to keep the TCP connection open.
// These messages appear in responses at random. The client must detect the message type and process accordingly.
//
// Header specification:
// Continuation messages contain two headers, as follows:

Ainda é possível usar `BackgroundTask` sozinho no FastAPI, mas você precisa criar o objeto no seu código e retornar uma `Response` da Starlette incluindo-o.

Você pode ver mais detalhes na <a href="https://www.starlette.dev/background/" class="external-link" target="_blank">documentação oficial da Starlette para tarefas em segundo plano</a>.

        final DeleteRequestBuilder mockDeleteBuilder = mock(DeleteRequestBuilder.class);

        final ClearScrollRequestBuilder mockClearScrollBuilder = mock(ClearScrollRequestBuilder.class);

        // Setup search response with one hit
        when(mockClient.prepareSearch("test-index")).thenReturn(mockSearchBuilder);
        when(mockSearchBuilder.setScroll(any(Scroll.class))).thenReturn(mockSearchBuilder);

    /**
     * Sends a DCERPC fragment and receives the response in a single operation
     * @param out the outgoing buffer containing the request
     * @param off the offset into the outgoing buffer
     * @param length the length of data to send
     * @param inB the buffer to receive the response
     * @return the number of bytes received

    }

    @Test
    @DisplayName("SMB version detection via flag or response type")
    void isSMB2_variants() throws Exception {
        // 1) smb2 flag set
        setField(transport, "smb2", true);
        assertTrue(transport.isSMB2());

        // 2) smb2 false but negotiated is SMB2 response
        setField(transport, "smb2", false);