來自WCF服務的響應不一致

我有一個WCF服務託管在IIS7中，這個服務只是另一個服務的包裝，所以它做了什麼調用實際的服務，然後返回一個響應，然後傳遞給客戶。我遇到的問題是我發送了一個請求並返回了數據，當我發送另一個請求時，我收到下面的錯誤：請分享一下這裏可能存在的問題。來自WCF服務的響應不一致

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    <title>Specified argument was out of the range of valid values.<br>Parameter name: value</title> 
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     <span><H1>Server Error in '/VendorSelfCarewebapi' Application.<hr width=100% size=1 color=silver></H1> 

     <h2> <i>Specified argument was out of the range of valid values.<br>Parameter name: value</i> </h2></span> 

     <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif "> 
      <b> Description: </b> An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 
     <br><br> 

     <b> Exception Details: </b>System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.<br>Parameter name: value<br><br> 

     <b>Source Error:</b> <br><br> 

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        <code>An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</code> 
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     <br> 
     <b>Stack Trace:</b> <br><br> 
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       <code><pre> 
       [ArgumentOutOfRangeException: Specified argument was out of the range of valid values. 
       Parameter name: value] 
       System.Web.HttpResponse.set_StatusDescription(String value) +3165151 
       System.Web.HttpResponseWrapper.set_StatusDescription(String value) +9 
       System.Web.Http.WebHost.HttpControllerHandler.CopyResponseStatusAndHeaders(HttpContextBase httpContextBase, HttpResponseMessage response) +53 
       System.Web.Http.WebHost.&lt;ConvertResponse&gt;d__6.MoveNext() +96 
       System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93 
       System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 
       System.Web.Http.WebHost.&lt;ProcessRequestAsyncCore&gt;d__0.MoveNext() +381 
       System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93 
       System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 
       System.Web.TaskAsyncHelper.EndTask(IAsyncResult ar) +60 
       System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +6 
       System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9651516 
       System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +155 
       </pre></code> 

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     <b>Version Information:</b>&nbsp;Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34274 

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[ArgumentOutOfRangeException]: Specified argument was out of the range of valid values. 
Parameter name: value 
    at System.Web.HttpResponse.set_StatusDescription(String value) 
    at System.Web.HttpResponseWrapper.set_StatusDescription(String value) 
    at System.Web.Http.WebHost.HttpControllerHandler.CopyResponseStatusAndHeaders(HttpContextBase httpContextBase, HttpResponseMessage response) 
    at System.Web.Http.WebHost.HttpControllerHandler.<ConvertResponse>d__6.MoveNext() 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) 
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) 
    at System.Web.Http.WebHost.HttpControllerHandler.<ProcessRequestAsyncCore>d__0.MoveNext() 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) 
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) 
    at System.Web.TaskAsyncHelper.EndTask(IAsyncResult ar) 
    at System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) 
    at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() 
    at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

來源

2016-02-19 Bayeni

，張貼產生的異常*碼*。嘗試調試您的代碼，添加異常處理以記錄任何異常。由於調用堆棧包含「TaskAwaiter」，因此非常可能在異步方法中沒有異常處理程序時發生錯誤 –