App Platform Django SECURE_PROXY_SSL_HEADER use

I have a Django 4.2 app running on App Platform. When inspecting request headers in my app I can see that they include HTTP_X_FORWARDED_PROTO: https. That’s good and implies that I should be able to add a SECURE_PROXY_SSL_HEADER to my security settings. However, the Django documentation for that setting includes the following warning:

Modifying this setting can compromise your site’s security. Ensure you fully understand your setup before changing it.

Make sure ALL of the following are true before setting this…:

  • Your Django app is behind a proxy.
  • Your proxy strips the X-Forwarded-Proto header from all incoming requests, even when it contains a comma-separated list of protocols. In other words, if end users include that header in their requests, the proxy will discard it.
  • Your proxy sets the X-Forwarded-Proto header and sends it to Django, but only for requests that originally come in via HTTPS.

So, I would like to know if App Platform meets all three of those conditions.

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