Why is not called Polly policy http message handler when connection could not be established?I would like to retry even if connection could not be established, the service might be restarting when I'm doing the grpc call.
How can I add http message handler which will be called even during connection?
serviceCollection .AddGrpcClient<TGrpcClientType>(option => { option.Address = new Uri(configuration.EndpointAddress); option.CallOptionsActions.Add(ctx => ctx.CallOptions = ctx.CallOptions .WithDeadline(DateTime.UtcNow.Add(configuration.Deadline))); }) .AddPolicyHandler(retryFunc); This sample code was taken from past discussion https://github.com/grpc/grpc-dotnet/issues/686
Func<HttpRequestMessage, IAsyncPolicy<HttpResponseMessage>> retryFunc = (request) =>{ return Policy.HandleResult<HttpResponseMessage>(r => r.Headers.GetValues("grpc-status").FirstOrDefault() != "0") .WaitAndRetryAsync(3, (input) => TimeSpan.FromSeconds(3 + input), (result, timeSpan, retryCount, context) => { var grpcStatus = (StatusCode)int.Parse(result.Result.Headers.GetValues("grpc-status").FirstOrDefault() ?? "0"); Console.WriteLine($"Request failed with {grpcStatus}. Retry."); });};