public static async Task <HttpResponseMessage> HttpRequestAndWaitRatelimit(HttpClient httpClient, HttpRequestMessage request,
RateLimitCallbackDelegate rateLimitCallback = null, CancellationToken ct = default)
{
//request.Headers.Add("X-RateLimit-Precision", "millisecond");
while (true)
{
HttpResponseMessage response;
try
{
request = await request.CloneAsync();
response = await httpClient.SendAsync(request, ct);
}
catch (HttpRequestException)
{
//Will try again on connection errors
continue;
}
if (response.IsSuccessStatusCode)
{
return(response);
}
else if ((int)response.StatusCode == 429)
{
//int rateLimitResetTime = int.Parse(response.Headers.GetValues("X-RateLimit-Reset-After").First().Replace(".", ""));
int rateLimitResetTime = int.Parse(response.Headers.GetValues("Retry-After").First());
rateLimitCallback?.Invoke(rateLimitResetTime);
await Task.Delay(TimeSpan.FromSeconds(rateLimitResetTime), ct);
}
else
{
string excStr = "Unexpected response in HttpRequestAndWaitRatelimit: response.StatusCode is " + response.StatusCode;
if (response.Headers.TryGetValues("X-RateLimit-Remaining", out IEnumerable <string> XRateLimitRemainingValues))
{
excStr += " X-RateLimit-Remaining is " + XRateLimitRemainingValues.First();
}
string body = null;
if ((body = await response.Content.ReadAsStringAsync()) != null)
{
excStr += " response.Content is " + body;
}
throw new Exception(excStr);
}
}
}
public static async Task <string> HttpGetStringAndWaitRatelimit(HttpClient httpClient, string uri,
RateLimitCallbackDelegate rateLimitCallback = null, CancellationToken ct = default)
{
return(await HttpGetStringAndWaitRatelimit(httpClient, new Uri(uri), rateLimitCallback, ct));
}
public static async Task <string> HttpGetStringAndWaitRatelimit(HttpClient httpClient, Uri uri,
RateLimitCallbackDelegate rateLimitCallback = null, CancellationToken ct = default)
{
return(await(await HttpRequestAndWaitRatelimit(httpClient,
new HttpRequestMessage(HttpMethod.Get, uri), rateLimitCallback, ct)).Content.ReadAsStringAsync());
}
