Overview
Shelf CORS Headers is a middleware package for the Shelf framework that simplifies adding Cross-Origin Resource Sharing (CORS) headers to HTTP responses. It enables server-side applications built with Shelf to securely handle cross-origin requests by configuring allowed origins, methods, headers, and credentials. The package integrates seamlessly into existing Shelf-based servers, providing a lightweight and configurable solution for managing CORS policies in web services across multiple platforms.
Use cases
- Enabling cross-origin requests in Shelf-based APIs
- Securing web services with controlled access policies
- Supporting frontend apps hosted on different domains
- Integrating CORS into Flutter web backends
- Handling preflight requests automatically
Key features
- Configurable allowed origins
- Support for custom headers and methods
- Automatic handling of OPTIONS preflight requests
- Easy integration with Shelf routers
- Flexible configuration for credentials and max age
Suitable for
- Developers using Shelf for backend logic
- Flutter developers building web APIs
- Teams implementing secure RESTful services
- Applications requiring fine-grained CORS control
- Server-side Dart projects targeting multiple platforms
Considerations
- Requires basic understanding of CORS standards
- Not suitable for standalone client-side use
- Configuration must be carefully managed in production
- Does not include request validation beyond CORS
- Limited to Shelf-based server environments