- 📞 [Traefik](https://traefik.io) como proxy reverso / balanceador de carga.
- 🚢 Instruções de deployment usando Docker Compose, incluindo como configurar um proxy frontend com Traefik para gerenciar automaticamente certificados HTTPS.

- 📞 [Traefik](https://traefik.io) como proxy inverso / load balancer.
- 🚢 Instrucciones de despliegue usando Docker Compose, incluyendo cómo configurar un proxy Traefik frontend para manejar certificados HTTPS automáticos.

# Atrás de um Proxy { #behind-a-proxy }

Em muitas situações, você usaria um **proxy** como Traefik ou Nginx na frente da sua aplicação FastAPI.

Esses proxies podem lidar com certificados HTTPS e outras coisas.

## Headers Encaminhados pelo Proxy { #proxy-forwarded-headers }

Podría ser otro contenedor, por ejemplo, con [Traefik](https://traefik.io/), manejando **HTTPS** y la adquisición **automática** de **certificados**.

/// tip | Consejo

Traefik tiene integraciones con Docker, Kubernetes, y otros, por lo que es muy fácil configurar y configurar HTTPS para tus contenedores con él.

///

 *
 * Pinning certificates limits your server team's abilities to update their TLS certificates. By
 * pinning certificates, you take on additional operational complexity and limit your ability to
 * migrate between certificate authorities. Do not use certificate pinning without the blessing of
 * your server's TLS administrator!
 *
 * ### Note about self-signed certificates
 *

Before Let's Encrypt, these **HTTPS certificates** were sold by trusted third parties.

The process to acquire one of these certificates used to be cumbersome, require quite some paperwork and the certificates were quite expensive.

But then **[Let's Encrypt](https://letsencrypt.org/)** was created.

     * intermediate signing certificates beneath it.
     *
     * By default this certificate cannot not sign other certificates. Set this to 0 so this
     * certificate can sign other certificates (but those certificates cannot themselves sign
     * certificates). Set this to 1 so this certificate can sign intermediate certificates that can

nians-using-fake-google-certificate.html). It also assumes your HTTPS servers’ certificates are signed by a certificate authority.

Use [CertificatePinner](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-certificate-pinner/) to restrict which certificates and certificate authorities are trusted. Certificate pinning increases security, but limits your server team’s abilities to update their TLS certificates. **Do not use certificate pinning without the blessing of your server’s TLS administrator!**...

   *     -> pinnedIntermediate (trusted by CertificatePinner)
   *         -> attackerSwitch
   * ```
   *
   * The attacker serves a set of certificates that yields a too-long chain in our certificate
   * pinner. The served certificates (incorrectly) formed a single chain to the pinner:
   *
   * ```
   *   attackerCa
   *     -> attackerIntermediate

  /** Returns a possibly-empty list of certificates that identify this peer. */
  @get:JvmName("localCertificates") val localCertificates: List<Certificate>,
  // Delayed provider of peerCertificates, to allow lazy cleaning.
  peerCertificatesFn: () -> List<Certificate>,
) {
  /** Returns a possibly-empty list of certificates that identify the remote peer. */
  @get:JvmName("peerCertificates")