Então, para que tudo funcione corretamente, é melhor especificar explicitamente as origens permitidas.

## Usar `CORSMiddleware` { #use-corsmiddleware }

Você pode configurá-lo em sua aplicação **FastAPI** usando o `CORSMiddleware`.

* Importe `CORSMiddleware`.
* Crie uma lista de origens permitidas (como strings).
* Adicione-a como um "middleware" à sua aplicação **FastAPI**.

Africa/Dar_es_Salaam Africa/Djibouti Africa/Douala Africa/El_Aaiun Africa/Freetown Africa/Gaborone Africa/Harare Africa/Johannesburg Africa/Juba Africa/Kampala Africa/Khartoum Africa/Kigali Africa/Kinshasa Africa/Lagos Africa/Libreville Africa/Lome Africa/Luanda Africa/Lubumbashi Africa/Lusaka Africa/Malabo Africa/Maputo Africa/Maseru Africa/Mbabane Africa/Mogadishu Africa/Monrovia Africa/Nairobi Africa/Ndjamena Africa/Niamey Africa/Nouakchott Africa/Ouagadougou Africa/Porto-Novo Africa/Sao_Tome Africa/Timbuktu...

Así que, para que todo funcione correctamente, es mejor especificar explícitamente los orígenes permitidos.

## Usa `CORSMiddleware` { #use-corsmiddleware }

Puedes configurarlo en tu aplicación **FastAPI** usando el `CORSMiddleware`.

* Importa `CORSMiddleware`.
* Crea una lista de orígenes permitidos (como strings).
* Agrégalo como un "middleware" a tu aplicación **FastAPI**.

También puedes especificar si tu backend permite:

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \

    # via
    #   -c ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-constraints.txt
    #   -r ci/official/requirements_updater/nvidia-requirements.txt
nvidia-curand-cu12==10.3.6.82 \
    --hash=sha256:0631ba65231260ad832ce233ddda57e7b3b7158eabf000d78e46cbb5bd5b7aae \
    --hash=sha256:2823fb27de4e44dbb22394a6adf53aa6e1b013aca0f8c22867d1cfae58405536 \