final PrintWriter writer = new PrintWriter(stringWriter);

        chatApiManager.sendSseEvent(writer, "chunk", Map.of("content", "Hello "));

        final String output = stringWriter.toString();
        assertTrue(output.contains("event: chunk"));
        assertTrue(output.contains("\"content\":\"Hello \""));
    }

    @Test
    public void test_sendSseEvent_error() {

但如果你想串流純二進位資料或字串，以下是做法。

/// info

已在 FastAPI 0.134.0 新增。

///

## 使用情境 { #use-cases }

當你想串流純字串時可以用這個機制，例如直接轉發來自 AI LLM 服務的輸出。

你也可以用它來串流大型二進位檔案，邊讀邊將每個區塊（chunk）串流出去，而不必一次把整個檔案載入記憶體。

你也可以用同樣方式串流視訊或音訊，甚至可以在處理的同時即時產生並傳送。

## 使用 `yield` 的 `StreamingResponse` { #a-streamingresponse-with-yield }

如果在你的路徑操作函式中宣告 `response_class=StreamingResponse`，就可以用 `yield` 逐一送出每個資料區塊。

   * @param last when true, there is no response data.
   */
  fun onHeaders(
    streamId: Int,
    responseHeaders: List<Header>,
    last: Boolean,
  ): Boolean

  /**
   * A chunk of response data corresponding to a pushed request.  This data must either be read or
   * skipped.
   *
   * @param streamId server-initiated stream ID: an even number.

    /**
     * Function code to transceive data on a named pipe
     */
    public static final int FSCTL_PIPE_TRANSCEIVE = 0x0011C017;
    /**
     * Function code for server-side copy chunk operation
     */
    public static final int FSCTL_SRV_COPYCHUNK = 0x001440F2;
    /**
     * Function code to enumerate volume shadow copy snapshots
     */

      throw new UnsupportedOperationException();
    }

    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder(length);
      for (CharSequence chunk : chunks) {
        sb.append(chunk);
      }
      return sb.toString();
    }
  }

  /**
   * Puts an array of bytes into this sink.
   *
   * @param bytes a byte array
   * @return this instance
   */
  @CanIgnoreReturnValue
  PrimitiveSink putBytes(byte[] bytes);

  /**
   * Puts a chunk of an array of bytes into this sink. {@code bytes[off]} is the first byte written,
   * {@code bytes[off + len - 1]} is the last.
   *
   * @param bytes a byte array
   * @param off the start offset in the array

    private long v2 = 0x6c7967656e657261L;
    private long v3 = 0x7465646279746573L;

    // The number of bytes in the input.
    private long b = 0;

    // The final 64-bit chunk includes the last 0 through 7 bytes of m followed by null bytes
    // and ending with a byte encoding the positive integer b mod 256.
    private long finalM = 0;

    SipHasher(int c, int d, long k0, long k1) {

	}

	total := 0
	err := gorm.G[User](DB).Where("name like ?", "GenericsFindBatch%").FindInBatches(ctx, 2, func(chunk []User, batch int) error {
		if len(chunk) > 2 {
			t.Errorf("batch size exceed 2: got %d", len(chunk))
		}

		total += len(chunk)
		return nil
	})
	if err != nil {
		t.Fatalf("FindInBatches failed: %v", err)
	}

	if total != len(users) {

 * newHasher().putByte(b1).putBytes(new byte[] { b2, b3 }).hash()
 * newHasher().putBytes(new byte[] { b1, b2, b3 }).hash()
 * }
 *
 * <p>If you wish to avoid this, you should either prepend or append the size of each chunk. Keep in
 * mind that when dealing with char sequences, the encoded form of two concatenated char sequences
 * is not equivalent to the concatenation of their encoded form. Therefore, {@link

fs.s3a.fast.upload.buffer=disk # Use disk as the buffer for uploads
fs.s3a.fast.upload=true # Turn on fast upload mode
fs.s3a.max.total.tasks=2048 # Maximum number of parallel tasks
fs.s3a.multipart.size=512M # Size of each multipart chunk
fs.s3a.multipart.threshold=512M # Size before using multipart uploads
fs.s3a.socket.recv.buffer=65536 # Read socket buffer hint
fs.s3a.socket.send.buffer=65536 # Write socket buffer hint