public void ThrottleIfNecessary()
{
if (PreventThrottle)
{
return;
}
var reset = false;
if (currentWeigth > RequestLimitPerMinute)
{
RequestThrottleResetEvent.Reset();
RequestMinRemainingMs = (RequestLimitIntervalStartTime.AddMinutes(1).Ticks - DateTime.Now.Ticks) /
TimeSpan.TicksPerMillisecond;
Logger.LogFatal($"Binance Rate Limit Exceeded. Throttling request for {RequestMinRemainingMs}ms");
if (RequestMinRemainingMs > 0)
{
Thread.Sleep((int)RequestMinRemainingMs);
}
RequestThrottleResetEvent.Set();
reset = true;
}
if (reset || DateTime.Now > RequestLimitIntervalStartTime.AddMinutes(1))
{
currentWeigth = lastWeigth;
RequestLimitIntervalStartTime = DateTime.Now;
}
}
private async Task <T> GetResponse <T>(HttpRequestMessage req, BinanceEndpointData endpoint) where T : class, new()
{
if (RequestLimitExceeded)
{
return(null);
}
currentWeigth += endpoint.Weight;
lastWeigth = endpoint.Weight;
if (!endpoint.ShouldByPassThrottle)
{
RequestThrottleResetEvent.WaitOne();
ThrottleIfNecessary();
}
string content = null;
try
{
HttpResponseMessage response = null;
if (req.Method == HttpMethod.Get)
{
response = await HttpClient.GetAsync(req.RequestUri);
}
else if (req.Method == HttpMethod.Post)
{
response = await HttpClient.PostAsync(req.RequestUri, req.Content);
}
else
{
throw new ArgumentOutOfRangeException(req.Method.ToString());
}
content = await response.Content.ReadAsStringAsync();
if (!response.IsSuccessStatusCode)
{
if (response.StatusCode == (HttpStatusCode)418)
{
Logger.LogFatal("Binance Rate LIMIT EXCEEDED! IP Banned.");
SetRequestLimitExceeded();
}
else if (response.StatusCode == (HttpStatusCode)429)
{
Logger.LogFatal("Binance Rate LIMIT EXCEEDED!");
SetRequestLimitExceeded();
}
else
{
Logger.LogProxy(
$"Url: {req.RequestUri.AbsoluteUri} Status: {response.StatusCode} Content: {response.Content} Error: {content}");
}
return(null);
}
RequestLimitExceeded = false;
return(JsonConvert.DeserializeObject <T>(content));
}
catch (Exception ex)
{
Logger.LogError($"UnknownError fetching Url: {req.RequestUri.AbsoluteUri} Content: {content}", ex);
return(null);
}
}
