public static Task RetryOnThrottle(this IMessageSender sender, Func <IMessageSender, Task> action, TimeSpan delay, int maxRetryAttempts, int retryAttempts = 0)
{
var task = action(sender);
return(task.ContinueWith(async t =>
{
var exception = ExceptionDispatchInfo.Capture(t.Exception?.InnerException);
var serverBusy = exception.SourceException is InvalidOperationException;
if (serverBusy && retryAttempts < maxRetryAttempts)
{
await Task.Delay(delay);
await sender.RetryOnThrottle(action, delay, maxRetryAttempts, ++retryAttempts);
}
else if (t.IsFaulted)
{
exception.Throw();
}
})
.Unwrap());
}