* `allow_origins` - A list of origins that should be permitted to make cross-origin requests. E.g. `['https://example.org', 'https://www.example.org']`. You can use `['*']` to allow any origin.
* `allow_origin_regex` - A regex string to match against origins that should be permitted to make cross-origin requests. e.g. `'https://.*\.example\.org'`.

curl4j
[![Java CI with Maven](https://github.com/codelibs/curl4j/actions/workflows/maven.yml/badge.svg)](https://github.com/codelibs/curl4j/actions/workflows/maven.yml)
=====

A simple cURL-like Java HTTP client.

## Features

- Fluent API for building HTTP requests (GET, POST, PUT, DELETE, HEAD, OPTIONS, CONNECT, TRACE)
- Support for query parameters, headers, body (String or stream), compression, SSL configuration, proxies, and timeouts

read_query["/items/"]

query_extractor --> query_or_cookie_extractor --> read_query
```

## Using the same dependency multiple times { #using-the-same-dependency-multiple-times }

If one of your dependencies is declared multiple times for the same *path operation*, for example, multiple dependencies have a common sub-dependency, **FastAPI** will know to call that sub-dependency only once per request.

class MainTest {
  @Test
  fun simple() {
    val request = fromArgs("http://example.com").createRequest()
    assertThat(request.method).isEqualTo("GET")
    assertThat(request.url.toString()).isEqualTo("http://example.com/")
    assertThat(request.body).isNull()
  }

  @Test
  @Throws(IOException::class)
  fun put() {
    val request = fromArgs("-X", "PUT", "-d", "foo", "http://example.com").createRequest()

          "language-groovy",
          "maven",
          "platform-native",
          "plugin-development",
          "plugins-groovy",
          "plugins-java",
          "samples",
          "testing-native",
          "version-control",
          "workers"
        ],
        "parallelizationMethod": {
          "name": "TestDistribution"
        }
      }
    ]
  },

<img src="/img/tutorial/bigger-applications/image01.png">

## Include the same router multiple times with different `prefix` { #include-the-same-router-multiple-times-with-different-prefix }

You can also use `.include_router()` multiple times with the *same* router using different prefixes.

This could be useful, for example, to expose the same API under different prefixes, e.g. `/api/v1` and `/api/latest`.

Interceptors
============

Interceptors are a powerful mechanism that can monitor, rewrite, and retry calls. Here's a simple interceptor that logs the outgoing request and the incoming response.

```java
class LoggingInterceptor implements Interceptor {
  @Override public Response intercept(Interceptor.Chain chain) throws IOException {
    Request request = chain.request();

    long t1 = System.nanoTime();

Si vous ne savez pas ce que c'est, vous apprendrez ce qu'est un « hachage de mot de passe » dans les [chapitres sur la sécurité](security/simple-oauth2.md#password-hashing).

///

## Utiliser plusieurs modèles { #multiple-models }

Voici une idée générale de l'apparence des modèles avec leurs champs de mot de passe et les endroits où ils sont utilisés :

    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",
        "name": "The Foo live"
    }
}
```

Là encore, avec cette simple déclaration, avec FastAPI vous obtenez :

- Prise en charge par l'éditeur (autocomplétion, etc.), même pour les modèles imbriqués
- Conversion des données

        .Builder()
        .add("*.example.com", certA1Sha256Pin)
        .add("a.example.com", certB1Sha256Pin)
        .add("b.example.com", certC1Sha256Pin)
        .build()

    val expectedPins =
      listOf(
        Pin("*.example.com", certA1Sha256Pin),
        Pin("a.example.com", certB1Sha256Pin),
      )
    assertThat(certificatePinner.findMatchingPins("a.example.com")).isEqualTo(expectedPins)
  }

  @Test