eb/HTTP/Headers" class="external-link" target="_blank">using the `X-` prefix</a>.

But if you have custom headers that you want a client in a browser to be able to see, you need to add them to your CORS configurations (read more in [CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md){.internal-link target=_blank}), using the parameter `expose_headers` documented in <a href="https://www.starlette.dev/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette's CORS...

### Arbeitsspeicher pro Prozess { #memory-per-process }

Wenn das Programm nun Dinge in den Arbeitsspeicher lädt, zum Beispiel ein Modell für maschinelles Lernen in einer Variablen oder den Inhalt einer großen Datei in einer Variablen, verbraucht das alles **einen Teil des Arbeitsspeichers (RAM – Random Access Memory)** des Servers.

            // Before blocking, confirm that the stream we're writing is still open. It's possible
            // that the stream has since been closed (such as if this write timed out.)
            if (!streams.containsKey(streamId)) {
              throw IOException("stream closed")
            }
            wait() // Wait until we receive a WINDOW_UPDATE.
          }
        } catch (e: InterruptedException) {

		return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}

	if err := DB.Session(&gorm.Session{PrepareStmt: true}).Transaction(func(tx *gorm.DB) error {
		return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}
}

func TestTransactionWithHooks(t *testing.T) {

		time.Sleep(time.Millisecond)
	}
	cancel()
	<-serverCanceled
	local.debugMsg(debugIsOutgoingClosed, st.muxID, func(closed bool) {
		if !closed {
			t.Error("expected outgoing closed")
		} else {
			t.Log("outgoing was closed")
		}
	})

	// Drain responses and check if error propagated.
	err = st.Results(func(b []byte) error {
		return nil
	})

	backgroundHealInfoPath = bucketMetaPrefix + SlashSeparator + ".background-heal.json"

	dataUsageCacheName = ".usage-cache.bin"
)

// storeDataUsageInBackend will store all objects sent on the dui channel until closed.
func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dui <-chan DataUsageInfo) {
	attempts := 1
	for dataUsageInfo := range dui {
		json := jsoniter.ConfigCompatibleWithStandardLibrary

            throws IOException;

    /**
     * Calculates checksums for specified stream. Upon this method returns, the stream will be depleted (fully read)
     * but not closed.
     *
     * @param stream      The stream for which to calculate checksums, must not be {@code null}.
     * @param algorithms  The checksum algorithms to use, must not be {@code null}.

	IsLocal() bool

	// Returns hostname if disk is remote.
	Hostname() string

	// Returns the entire endpoint.
	Endpoint() Endpoint

	// Close the disk, mark it purposefully closed, only implemented for remote disks.
	Close() error

	// Returns the unique 'uuid' of this disk.
	GetDiskID() (string, error)

	// Set a unique 'uuid' for this disk, only used when
	// disk is replaced and formatted.

                for (i in 0..9) {
                  sink.writeByte(0)
                  sink.flush()
                  sleep(100)
                }
                fail("Expected connection to be closed")
              }
            },
          ).build(),
      )
    interruptLater(500)
    assertFailsWith<IOException> {
      call.execute()
    }
  }

  @Test

## Інші middlewares

Ви можете пізніше прочитати більше про інші middlewares в [Advanced User Guide: Advanced Middleware](../advanced/middleware.md){.internal-link target=_blank}.