如何解决“ Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException：由于数据到达速度太慢，读取请求正文超时了吗？”

Question

[进行API性能测试时[例如线程/用户数：50，循环计数：10]，由于以下异常，使用POST方法的样本的5％至8％失败：

**Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: Reading the request body timed out due to data arriving too slowly. See MinRequestBodyDataRate.**
   at Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException.Throw(RequestRejectionReason reason)
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Http1MessageBody.PumpAsync()
   at System.IO.Pipelines.PipeCompletion.ThrowLatchedException()
   at System.IO.Pipelines.Pipe.GetReadResult(ReadResult& result)
   at System.IO.Pipelines.Pipe.GetReadAsyncResult()
   at System.IO.Pipelines.Pipe.DefaultPipeReader.GetResult(Int16 token)
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.MessageBody.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpRequestStream.ReadAsyncInternal(Memory`1 buffer, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.WebUtilities.FileBufferingReadStream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.WebUtilities.StreamHelperExtensions.DrainAsync(Stream stream, ArrayPool`1 bytePool, Nullable`1 limit, CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Mvc.Formatters.JsonInputFormatter.ReadRequestBodyAsync(InputFormatterContext context, Encoding encoding)
   at Microsoft.AspNetCore.Mvc.ModelBinding.Binders.BodyModelBinder.BindModelAsync(ModelBindingContext bindingContext)
   at Microsoft.AspNetCore.Mvc.ModelBinding.ParameterBinder.BindModelAsync(ActionContext actionContext, IModelBinder modelBinder, IValueProvider valueProvider, ParameterDescriptor parameter, ModelMetadata metadata, Object value)

您能否建议我该如何解决？

注意：我在POST方法中正确实现了异步/等待。这是仅发生在POST方法中，在500个样本中只有20个到每个POST方法失败40个样本。在提供相同输入的同时测试。

Answer 1

您可以在KestrelServerLimits.MinRequestBodyDataRate中将Program.cs属性设置为null，如下所示：

.UseKestrel(opt =>
{
    opt.Limits.MinRequestBodyDataRate = null;
});

参考：

KestrelServerLimits.MinRequestBodyDataRate Property