Owin SelfHost WebApi - 客户端在响应期间关闭连接会引发异常吗?

时间:2015-05-07 18:45:17

标签: c# .net asp.net-web-api owin

我正在运行基于Owin Selfhost的WebApi,我已经通过

输入了API未处理的异常记录器
config.Services.Add(typeof(IExceptionLogger), _apiExceptionLogger);

ApiExceptionLogger的相关部分:

    public override void Log(ExceptionLoggerContext context)
    {
        if (context == null || context.ExceptionContext == null) return;

        Logger.Error("Unhandled exception from Web API", context.ExceptionContext.Exception);
    }

它定期捕获和记录的情况是客户端请求数据集然后在结果(JSON)被发送回来时关闭连接的情况 - 人们在chrome中发出请求,然后点击X所有结果回来之前的按钮:P

为了完整性,我已在下方粘贴了一个堆栈跟踪,只想了解两件事:

  • 这是常规/预期的行为吗? AFAIK是......我正在运行一个非常默认的API和管道
  • 有没有办法解决这个问题?基本上在取消的情况下更优雅地停止请求处理(在整个请求管道中记录的取消令牌确实浮现在脑海中,但在这种情况下看起来他们做的很多,在所有令牌仅支持合作取消之后)

我还没有对套接字级别发生的事件序列进行任何深入研究,到目前为止这只是一次日志记录滋扰。

System.Net.Http.HttpRequestException: Error while copying content to a stream. ---> System.IO.IOException ---> System.Net.HttpListenerException: The I/O operation has been aborted because of either a thread exit or an application request
   at System.Net.HttpResponseStream.EndWrite(IAsyncResult asyncResult)
   at Microsoft.Owin.Host.HttpListener.RequestProcessing.ExceptionFilterStream.EndWrite(IAsyncResult asyncResult)
   --- End of inner exception stack trace ---
   at Microsoft.Owin.Host.HttpListener.RequestProcessing.ExceptionFilterStream.EndWrite(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
   --- End of inner exception stack trace ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Owin.HttpMessageHandlerAdapter.<SendResponseContentAsync>d__20.MoveNext()    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Owin.HttpMessageHandlerAdapter.<SendResponseContentAsync>d__20.MoveNext()

2 个答案:

答案 0 :(得分:4)

我在Raspberry Pi上与Owin主机有类似的问题。这有助于https://stackoverflow.com/a/30583109/1786034

答案 1 :(得分:0)

其代码问题

异步读取文件并检查。如果您在进行api调用,并且超时,则肯定会引发异常。

  $('.toggle').click(function(){
    $('#nav').toggleClass('open');
    $('.container').toggleClass('menu-open');
  });

   $('#nav li').click(function(){
    $('#nav').removeClass('open');
    $('.container').removeClass('menu-open');
  });