**FastAPI** verwendet diese *vorübergehende* Response, um die Cookies (auch Header und Statuscode) zu extrahieren und fügt diese in die endgültige Response ein, die den von Ihnen zurückgegebenen Wert enthält, gefiltert nach einem beliebigen `response_model`.

Sie können den `Response`-Parameter auch in Abhängigkeiten deklarieren und darin Cookies (und Header) setzen.

## Eine `Response` direkt zurückgeben { #return-a-response-directly }

	// already present we can blindly use the
	// authToken as is instead of adding 'Bearer'
	tokens := strings.Fields(target.args.AuthToken)
	switch len(tokens) {
	case 2:
		req.Header.Set("Authorization", target.args.AuthToken)
	case 1:
		req.Header.Set("Authorization", "Bearer "+target.args.AuthToken)
	}

	req.Header.Set("Content-Type", "application/json")

	resp, err := target.httpClient.Do(req)

In diesem Fall wird die Middleware den eingehenden Request abfangen und mit entsprechenden CORS-Headern, und entweder einer `200`- oder `400`-<abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr> zu Informationszwecken antworten.

### Einfache Requests { #simple-requests }

b[size:] } } // DefaultReader is a sentinel type, embedded in the default // [crypto/rand.Reader], used to recognize it when passed to // APIs that accept a rand io.Reader. type DefaultReader interface{ defaultReader() } // ReadWithReader uses Reader to fill b with cryptographically secure random // bytes. It is intended for use in APIs that expose a rand io.Reader. // // If Reader is not the default Reader from crypto/rand, // [randutil.MaybeReadByte] and [fips140.RecordNonApproved] are called....

    public ListenableFuture<V> loadFuture(K key, CacheLoader<? super K, V> loader) {
      try {
        stopwatch.start();
        V previousValue = oldValue.get();
        if (previousValue == null) {
          V newValue = loader.load(key);
          return set(newValue) ? futureValue : immediateFuture(newValue);
        }
        ListenableFuture<V> newValue = loader.reload(key, previousValue);
        if (newValue == null) {

      Headers
        .Builder()
        .addUnsafeNonAscii("héader1", "value1")
        .build()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0xe9 at 1 in header name: héader1")
    }
  }

  @Test fun addUnsafeNonAsciiAcceptsUnicodeValue() {
    val headers =
      Headers
        .Builder()
        .addUnsafeNonAscii("header1", "valué1")
        .build()

* `apiKey`: una clave específica de la aplicación que puede provenir de:
  * Un parámetro de query.
  * Un header.
  * Una cookie.
* `http`: sistemas de autenticación HTTP estándar, incluyendo:
  * `bearer`: un header `Authorization` con un valor de `Bearer ` más un token. Esto se hereda de OAuth2.
  * Autenticación básica HTTP.
  * Digest HTTP, etc.

pkg net/http, const StatusEarlyHints = 103
pkg net/http, const StatusEarlyHints ideal-int
pkg net/http, func NewRequestWithContext(context.Context, string, string, io.Reader) (*Request, error)
pkg net/http, method (Header) Clone() Header
pkg net/http, method (*Request) Clone(context.Context) *Request
pkg net/http, method (*Transport) Clone() *Transport

		},
		// Test case - 2
		// Check for JWT header.
		{
			req: &http.Request{
				URL: &url.URL{
					Host:   "127.0.0.1:9000",
					Scheme: httpScheme,
					Path:   SlashSeparator,
				},
				Header: http.Header{
					"Authorization": []string{"Bearer 12313123"},
				},
			},
			authT: authTypeJWT,
		},
		// Test case - 3
		// Empty authorization header.
		{
			req: &http.Request{
				URL: &url.URL{

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, p.DiscoveryDoc.UserInfoEndpoint, nil)
	if err != nil {
		return nil, err
	}

	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	if accessToken != "" {
		req.Header.Set("Authorization", "Bearer "+accessToken)
	}

	client := &http.Client{
		Transport: transport,
	}

	resp, err := client.Do(req)
	if err != nil {