请求内容意外结束 Kestrel ASP.NET Core

Posted 2023-03-30

【中文标题】请求内容意外结束 Kestrel ASP.NET Core

【英文标题】：Unexpected end of request content Kestrel ASP.NET Core

【发布时间】：2017-10-06 15:31:03

【问题描述】：

我在两个 WebApi 之间发送大 (20GB) 文件时遇到问题。

WebAPI1 写在ASP.NET 4.6

WebAPI2 写在ASP.NET Core 2.0

当我通过 Postman 将此文件发送到 WebAPI2 时，会发送整个文件。但是，当我尝试将文件从 WebAPI1 发送到 WebAPI2 时，它会失败（尽管我可以发送 7GB 这样的文件）。

在发送 20GB 文件期间，我在 WebAPI2 中收到错误：

Microsoft.AspNetCore.Server.Kestrel.Core.BadHttpRequestException: Unexpected
 end of request content.
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.PipeCompl
etion.ThrowFailed()
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.Pipe.GetR
esult(ReadResult& result)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.Pipe.Micr
osoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.IReadableBufferAwai
ter.GetResult()
   at Microsoft.AspNetCore.Server.Kestrel.Internal.System.IO.Pipelines.ReadableB
ufferAwaitable.GetResult()
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.MessageBody.<ReadAs
ync>d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNot
ification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.FrameRequestStream.
<ReadAsyncInternal>d__21.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNot
ification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Microsoft.AspNetCore.WebUtilities.BufferedReadStream.<EnsureBufferedAsync>
d__37.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNot
ification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Microsoft.AspNetCore.WebUtilities.MultipartReaderStream.<ReadAsync>d__36.M
oveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNot
ification(Task task)
   at System.IO.Stream.<CopyToAsyncInternal>d__27.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNot
ification(Task task)

【参考方案1】：

当我在 WebApi1 中将此请求作为 WCF 合同的一部分运行时，我得到了堆栈跟踪：

   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at System.Threading.Tasks.Task`1.get_Result()

但是我注意到 Exception 总是在 2 分钟后抛出......

比我尝试发送那个 20GB 的文件作为控制器方法的一部分（来自 WebAPI1）并在那里捕获TaskCanceledException。当这个异常发生时，我们可以通过检查标志IsCancellationRequested来判断是超时问题，如果它是false则意味着它是超时问题。 有用的帖子在这里： HttpClient - A task was cancelled?

在我的情况下，stacktrace 中的 TaskCanceledException 设置为 false，因此在 HttpClient 中超时

new HttpClient  Timeout = TimeSpan.FromMinutes(2) ;

将限制增加到 10 分钟解决了问题。