w.md

using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Http.Resilience; using Microsoft.Extensions.Logging; using Polly;

namespace YourNamespace.Http;

public static class SessionResponseEndedRetryHandler { public static IHttpClientBuilder AddSessionResponseEndedRetry( this IHttpClientBuilder builder) { builder.AddResilienceHandler( "session-response-ended-retry", static (pipelineBuilder, context) => { var loggerFactory = context.ServiceProvider.GetRequiredService();

            var logger =
                loggerFactory.CreateLogger("SessionApiRetry");

            var retryOptions = new HttpRetryStrategyOptions
            {
                MaxRetryAttempts = 2,
                Delay = TimeSpan.FromMilliseconds(100),
                BackoffType = DelayBackoffType.Constant,

                ShouldHandle = new PredicateBuilder<HttpResponseMessage>()
                    .Handle<HttpRequestException>(ex =>
                        ex.InnerException is HttpIOException httpIoEx &&
                        httpIoEx.HttpRequestError == HttpRequestError.ResponseEnded),

                OnRetry = args =>
                {
                    logger.LogWarning(
                        "Retry #{Attempt} because of ResponseEnded. Next delay: {DelayMs} ms",
                        args.AttemptNumber + 1,
                        args.RetryDelay.TotalMilliseconds);

                    return default;
                }
            };

            pipelineBuilder.AddRetry(retryOptions);
        });

    return builder;
}

}