flutter_interceptor is a Flutter package that extends Dio, a powerful HTTP client, by providing an interceptor mechanism to manage HTTP requests and responses globally. It allows developers to modify requests before they are sent, handle responses after they arrive, and manage errors centrally. Ideal for adding authentication headers, logging, retry logic, or request/response transformation. The package integrates seamlessly with Dio and enhances network operations with clean, reusable code. It's particularly useful in apps requiring consistent HTTP behavior across multiple endpoints.
Use cases
- Adding auth headers to all requests
- Logging HTTP traffic for debugging
- Implementing retry logic on failed requests
- Transforming request/response data
- Handling global error states
- Monitoring API performance
Key features
- Global request/response interception
- Easy integration with Dio
- Support for async interceptors
- Clean separation of concerns
- Extensible middleware pattern
- Built-in error handling utilities
Suitable for
- Apps with complex HTTP workflows
- Projects requiring centralized network logic
- Teams needing maintainable HTTP code
- Authentication-heavy applications
- Debugging and monitoring HTTP calls
Considerations
- Requires familiarity with Dio
- May add overhead if overused
- Interceptors run on main thread unless managed
- Not suitable for platform-specific networking
- Limited documentation beyond basic examples
