Request headers
Domino includes several custom HTTP headers in each request forwarded to your App. These headers are only available if your app framework supports proxied HTTP headers.These headers are supported by Dash and Flask by default. For Shiny, you must use Shiny Server Pro to receive them.
Environment variables
Domino also injects runtime environment variables when an App is started. These are available to your app logic at startup.
Additional environment variables may be defined at the project or user level:
- Project-level variables: Defined in the project settings.
- User-level variables: Tied to the user who starts the App.
- Configure your App’s route prefix programmatically.
- Apply logic based on project context or user configuration.
- Pass secrets or credentials securely (via Domino’s environment variable management).
Next steps
- Apps in Domino gives an overview of how apps work within the Domino ecosystem.
- Learn more about how Apps in Domino run and what identity and permissions are used.
- Publish and deploy App versions explains how publishing a version differs from deploying it, and which settings you can change without creating a version.