dio_smart_retry 1.0.2

dio_smart_retry: ^1.0.2 copied to clipboard

Dio Smart Retry #

Flexible retry library for Dio package. This is a next generation of an abandoned dio_retry package.
By default, the request will be retried only for appropriate retryable http statuses.
Also, it supports dynamic delay between retries.
Null Safety.

Getting started #

1. Add package to pubspec.yaml: dio_smart_retry: ^1.0.2
2. Import package: import 'package:dio_smart_retry/dio_smart_retry.dart'

Usage #

Just add an interceptor to your dio:

final dio = Dio();
// Add the interceptor
dio.interceptors.add(RetryInterceptor(
  dio: dio,
  logPrint: print, // specify log function (optional)
  retries: 3, // retry count (optional)
  retryDelays: const [ // set delays between retries (optional)
    Duration(seconds: 1), // wait 1 sec before first retry
    Duration(seconds: 2), // wait 2 sec before second retry
    Duration(seconds: 3), // wait 3 sec before third retry
  ],
));

/// Sending a failing request for 3 times with a 1s, then 2s, then 3s interval
await dio.get('https://mock.codes/500');

See example/dio_smart_retry_example.dart.

Default retryable status codes list #

Responses with this http status codes will be retried by default:

• 408: RequestTimeout
• 429: TooManyRequests
• 500: InternalServerError
• 502: BadGateway
• 503: ServiceUnavailable
• 504: GatewayTimeout
• 440: LoginTimeout (IIS)
• 460: ClientClosedRequest (AWS Elastic Load Balancer)
• 499: ClientClosedRequest (ngnix)
• 520: WebServerReturnedUnknownError
• 521: WebServerIsDown
• 522: ConnectionTimedOut
• 523: OriginIsUnreachable
• 524: TimeoutOccurred
• 525: SSLHandshakeFailed
• 527: RailgunError
• 598: NetworkReadTimeoutError
• 599: NetworkConnectTimeoutError

Disable retry #

It's possible to manually disable retry for a specified request. Use disableRetry extension for that:

final request = RequestOptions(path: '/')..disableRetry = true;