private void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
_httpClient?.Dispose();
RateLimiter?.Dispose();
}
_disposed = true;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="timestampProvider">The timestamp provider.</param>
/// <param name="rateLimiter">The rate limiter (auto configured).</param>
/// <param name="options">The options.</param>
/// <param name="logger">The logger.</param>
internal BinanceHttpClient(ITimestampProvider timestampProvider = null, IApiRateLimiter rateLimiter = null, IOptions <BinanceApiOptions> options = null, ILogger <BinanceHttpClient> logger = null)
: base(logger)
{
TimestampProvider = timestampProvider ?? new TimestampProvider();
RateLimiter = rateLimiter ?? new ApiRateLimiter();
var apiOptions = options?.Value ?? new BinanceApiOptions();
DefaultRecvWindow = apiOptions.RecvWindowDefault ?? default;
TimestampProvider.TimestampOffsetRefreshPeriod = TimeSpan.FromMinutes(apiOptions.TimestampOffsetRefreshPeriodMinutes);
try
{
// Configure request rate limiter.
RateLimiter.Configure(TimeSpan.FromMinutes(apiOptions.RequestRateLimit.DurationMinutes), apiOptions.RequestRateLimit.Count);
// Configure request burst rate limiter.
RateLimiter.Configure(TimeSpan.FromSeconds(apiOptions.RequestRateLimit.BurstDurationSeconds), apiOptions.RequestRateLimit.BurstCount);
}
catch (Exception e)
{
var message = $"{nameof(BinanceHttpClient)}: Failed to configure request rate limiter.";
Logger?.LogError(e, message);
throw new BinanceApiException(message, e);
}
var uri = new Uri(EndpointUrl);
try
{
_httpClient = new HttpClient
{
BaseAddress = uri,
Timeout = TimeSpan.FromSeconds(apiOptions.HttpClientTimeoutDefaultSeconds)
};
}
catch (Exception e)
{
var message = $"{nameof(BinanceHttpClient)}: Failed to create HttpClient.";
Logger?.LogError(e, message);
throw new BinanceApiException(message, e);
}
if (apiOptions.ServicePointManagerConnectionLeaseTimeoutMilliseconds > 0)
{
try
{
// FIX: Singleton HttpClient doesn't respect DNS changes.
// https://github.com/dotnet/corefx/issues/11224
var sp = ServicePointManager.FindServicePoint(uri);
sp.ConnectionLeaseTimeout = apiOptions.ServicePointManagerConnectionLeaseTimeoutMilliseconds;
}
catch (Exception e)
{
var message = $"{nameof(BinanceHttpClient)}: Failed to set {nameof(ServicePointManager)}.ConnectionLeaseTimeout.";
Logger?.LogError(e, message);
throw new BinanceApiException(message, e);
}
}
try
{
var version = GetType().Assembly.GetName().Version;
var versionString = $"{version.Major}.{version.Minor}.{version.Build}{(version.Revision > 0 ? $".{version.Revision}" : string.Empty)}";
_httpClient.DefaultRequestHeaders.Add("User-Agent", $"Binance/{versionString} (.NET; +https://github.com/sonvister/Binance)");
}
catch (Exception e)
{
var message = $"{nameof(BinanceHttpClient)}: Failed to set User-Agent.";
Logger?.LogError(e, message);
throw new BinanceApiException(message, e);
}
}