- X-Forwarded-For：原始客户端的 IP 地址
- X-Forwarded-Proto：原始协议（`https`）
- X-Forwarded-Host：原始主机（`mysuperapp.com`）

当 **FastAPI CLI** 配置了 `--forwarded-allow-ips` 后，它会信任并使用这些请求头，例如用于在重定向中生成正确的 URL。

## 移除路径前缀的代理 { #proxy-with-a-stripped-path-prefix }

你可能会有一个代理，为你的应用添加一个路径前缀。

在这些情况下，你可以使用 `root_path` 来配置你的应用。

`root_path` 是 ASGI 规范（FastAPI 基于该规范，通过 Starlette 构建）提供的机制。

`root_path` 用于处理这些特定情况。

在挂载子应用时，它也会在内部使用。

type ReplicationMRFStats struct {
	LastFailedCount uint64 `json:"failedCount_last5min"`
	// Count of unreplicated entries that were dropped after MRF retry limit reached since cluster start.
	TotalDroppedCount uint64 `json:"droppedCount_since_uptime"`
	// Bytes of unreplicated entries that were dropped after MRF retry limit reached since cluster start.
	TotalDroppedBytes uint64 `json:"droppedBytes_since_uptime"`
}

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  private final int replacementsLength;
  // The first code point in the safe range.
  private final int safeMin;
  // The last code point in the safe range.
  private final int safeMax;

  // Cropped values used in the fast path range checks.
  private final char safeMinChar;
  private final char safeMaxChar;

  /**
   * Creates a new ArrayBasedUnicodeEscaper instance with the given replacement map and specified

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      if (destSize < sizeNeeded) {
        destSize = sizeNeeded + DEST_PAD_MULTIPLIER * (slen - index);
        dest = growBuffer(dest, destIndex, destSize);
      }

      // If we have skipped any characters, we need to copy them now.
      if (charsSkipped > 0) {
        s.getChars(lastEscape, index, dest, destIndex);
        destIndex += charsSkipped;
      }

            assertFalse(addresses[i].groupName);
        }
    }

    @Test
    void readRDataWireFormat_shouldTrimTrailingSpaces() throws Exception {
        // Test that trailing spaces (0x20) are trimmed from names
        byte[] src = new byte[50];
        int srcIndex = 0;

        Field rDataLengthField = NameServicePacket.class.getDeclaredField("rDataLength");
        rDataLengthField.setAccessible(true);

				if version.IsRemote() {
					stopFn(version.Size, errors.New("ILM Tiered version will be skipped for now"))
					continue
				}

				// Apply lifecycle rules on the objects that are expired.
				if filterLifecycle(bucket, version.Name, version) {
					expired++
					stopFn(version.Size, errors.New("ILM expired object/version will be skipped"))
					continue
				}

				// any object with only single DEL marker we don't need

const (
	xfs  = "XFS"
	ext4 = "EXT4"
)

// WalkDir will traverse a directory and return all entries found.
// On success a sorted meta cache stream will be returned.
// Metadata has data stripped, if any.
// The function tries to quit as fast as the context is canceled to avoid further drive IO
func (s *xlStorage) WalkDir(ctx context.Context, opts WalkDirOptions, wr io.Writer) (err error) {

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