# Guide de l'utilisateur avancé

## Caractéristiques supplémentaires

Le [Tutoriel - Guide de l'utilisateur](../tutorial/index.md){.internal-link target=_blank} devrait suffire à vous faire découvrir toutes les fonctionnalités principales de **FastAPI**.

Dans les sections suivantes, vous verrez des options, configurations et fonctionnalités supplémentaires.

/// note | Remarque

Les sections de ce chapitre ne sont **pas nécessairement "avancées"**.

    * New docs section: [Custom Request and APIRoute class](https://fastapi.tiangolo.com/advanced/custom-request-and-route/).
    * PR [#589](https://github.com/tiangolo/fastapi/pull/589) by [@dmontagu](https://github.com/dmontagu).
* Fix preserving custom route class in routers when including other sub-routers. PR [#538](https://github.com/tiangolo/fastapi/pull/538) by [@dmontagu](https://github.com/dmontagu).

## 0.40.0

///

## Renvoyer une `Response` personnalisée

L'exemple ci-dessus montre toutes les parties dont vous avez besoin, mais il n'est pas encore très utile, car vous auriez pu retourner l'`item` directement, et **FastAPI** l'aurait mis dans une `JSONResponse` pour vous, en le convertissant en `dict`, etc. Tout cela par défaut.

		accessKey = userAccessKey
		secretKey = userSecretKey
	}

	req := buildKMSRequest(t, test.method, test.path, accessKey, secretKey, test.query)
	rec := httptest.NewRecorder()
	adminTestBed.router.ServeHTTP(rec, req)

	t.Logf("HTTP req: %s, resp code: %d, resp body: %s", req.URL.String(), rec.Code, rec.Body.String())

	// Check status code
	if rec.Code != test.wantStatusCode {

type stsAPIHandlers struct{}

// registerSTSRouter - registers AWS STS compatible APIs.
func registerSTSRouter(router *mux.Router) {
	// Initialize STS.
	sts := &stsAPIHandlers{}

	// STS Router
	stsRouter := router.NewRoute().PathPrefix(SlashSeparator).Subrouter()

	// Assume roles with no JWT, handles AssumeRole.

/**
 * ExpressionDocumenter
 */
@Deprecated
public class ExpressionDocumenter {

    private static final String[] EXPRESSION_ROOTS = {"project", "settings", "session", "plugin", "rootless"};

    private static final String EXPRESSION_DOCO_ROOTPATH = "META-INF/maven/plugin-expressions/";

    private static Map<String, Expression> expressionDocumentation;

## FastAPI ⚒

**FastAPI** 🤝 👆 📄:

### ⚓️ 🔛 📂 🐩

* <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank"><strong>🗄</strong></a> 🛠️ 🏗, ✅ 📄 <abbr title="also known as: endpoints, routes">➡</abbr> <abbr title="also known as HTTP methods, as POST, GET, PUT, DELETE">🛠️</abbr>, 🔢, 💪 📨, 💂‍♂, ♒️.

      return "four";
    }

    @Override
    protected Integer getValueNotInPopulatedMap() {
      return 4;
    }
  }

  abstract static class RowTests extends MapTests {
    RowTests(
        boolean allowsNullValues,
        boolean supportsPut,
        boolean supportsRemove,
        boolean supportsClear,
        boolean supportsIteratorRemove) {

    // we should try the next route (if there is one).
    if (e is InterruptedIOException) {
      return e is SocketTimeoutException && !requestSendStarted
    }

    // Look for known client-side or negotiation errors that are unlikely to be fixed by trying
    // again with a different route.
    if (e is SSLHandshakeException) {

    assertFailsWith<InterruptedIOException> {
      // If this succeeds, too many requests were made.
      client.newCall(request).execute()
    }
  }

  /**
   * Make a request with two routes. The first route will time out because it's connecting to a
   * special address that never connects. The automatic retry will succeed.
   */
  @Test
  fun connectTimeoutsAttemptsAlternateRoute() {