# CORS (Cross-Origin Resource Sharing) { #cors-cross-origin-resource-sharing }

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS ou "Cross-Origin Resource Sharing"</a> refere-se às situações em que um frontend rodando em um navegador possui um código JavaScript que se comunica com um backend, e o backend está em uma "origem" diferente do frontend.

## Origem { #origin }

# Additional Status Codes { #additional-status-codes }

By default, **FastAPI** will return the responses using a `JSONResponse`, putting the content you return from your *path operation* inside of that `JSONResponse`.

It will use the default status code or the one you set in your *path operation*.

## Additional status codes { #additional-status-codes_1 }

# Codes HTTP supplémentaires

Par défaut, **FastAPI** renverra les réponses à l'aide d'une structure de données `JSONResponse`, en plaçant la réponse de votre  *chemin d'accès* à l'intérieur de cette `JSONResponse`.

Il utilisera le code HTTP par défaut ou celui que vous avez défini dans votre *chemin d'accès*.

## Codes HTTP supplémentaires

# Códigos de Estado Adicionales { #additional-status-codes }

Por defecto, **FastAPI** devolverá los responses usando un `JSONResponse`, colocando el contenido que devuelves desde tu *path operation* dentro de ese `JSONResponse`.

Usará el código de estado por defecto o el que configures en tu *path operation*.

## Códigos de estado adicionales { #additional-status-codes_1 }

* Make PD E2E Tests Wait for Detach to Prevent Kernel Errors ([#29031](https://github.com/kubernetes/kubernetes/pull/29031), [@saad-ali](https://github.com/saad-ali))
* Scale kube-proxy conntrack limits by cores (new default behavior) ([#28876](https://github.com/kubernetes/kubernetes/pull/28876), [@thockin](https://github.com/thockin))

/// note

Some response codes (see the next section) indicate that the response does not have a body.

FastAPI knows this, and will produce OpenAPI docs that state there is no response body.

///

## About HTTP status codes { #about-http-status-codes }

/// note

If you already know what HTTP status codes are, skip to the next section.

///

- github.com/coreos/bbolt: [v1.3.2](https://github.com/coreos/bbolt/tree/v1.3.2)
- github.com/coreos/etcd: [v3.3.13+incompatible](https://github.com/coreos/etcd/tree/v3.3.13)
- github.com/coreos/go-systemd: [95778df](https://github.com/coreos/go-systemd/tree/95778df)
- github.com/coreos/pkg: [399ea9e](https://github.com/coreos/pkg/tree/399ea9e)

    *   Add support for defaulting the value of `cycle_length` argument of
        `tf.data.Dataset.interleave` to the number of schedulable CPU cores.
    *   Promoting `tf.data.experimental.enumerate_dataset` to core as
        `tf.data.Dataset.enumerate`.
    *   Promoting `tf.data.experimental.unbatch` to core as
        `tf.data.Dataset.unbatch`.
    *   Adds option for introducing slack in the pipeline to reduce CPU

# CORS (Cross-Origin Resource Sharing) { #cors-cross-origin-resource-sharing }

## Додаткова інформація

Більше про <abbr title="Cross-Origin Resource Sharing">CORS</abbr> можна дізнатися в <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">документації Mozilla</a>.

/// note | Технічні деталі

Також можна використовувати `from starlette.middleware.cors import CORSMiddleware`.