private static RetryOptions DefaultOptions(RateLimitOptions options)
{
options = options ?? RateLimitOptions.DefaultInstance;
return(new RetryOptions
{
shouldRetry = (restException, retriesAttempted) =>
restException.httpResponseMessage.StatusCode == (HttpStatusCode)429 &&
retriesAttempted < options.maxRetries,
retryInterval = (restException, retriesAttempted) =>
{
var rateLimitWindowHeader = restException.httpResponseMessage.Headers
.GetValues("x-rate-limit-window")
.FirstOrDefault();
if (rateLimitWindowHeader != default)
{
options.rateLimitWindow = int.Parse(rateLimitWindowHeader);
}
return (int)(options.rateLimitWindow * 1000 *
Math.Pow(2, retriesAttempted)); // exponential back off
}
});
public RateLimitExtension(RateLimitOptions options = null) : base(DefaultOptions(options))
{
}