Twilio clicktocall-csharp - 首次启动后出现内部 500 错误答案

【问题标题】：Twilio clicktocall-csharp - Internal 500 Error after first launchTwilio clicktocall-csharp - 首次启动后出现内部 500 错误
【发布时间】：2018-01-31 03:08:44
【问题描述】：

设置正确的“TwilioAccountSID”、“TwilioAuthToken”和“TwilioNumber”后，网页显示“呼叫您时出现问题 - 请稍后重试。”我可以在其他应用程序中使用其他 Twilio 功能，但 ClickToCall 不起作用。它不会拨出任何一个号码。

示例项目： https://github.com/TwilioDevEd/clicktocall-csharp

Firefox 中的控制台登录：

不推荐使用 getPreventDefault()。使用 defaultPrevented 反而。 jquery-1.10.2.js:5375:28 XML 解析错误：没有根元素发现地点： http://localhost:57471/01d55b0057f14d8aa4f39e67f234bae7/browserLinkSignalR/abort?transport=webSockets&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAA9nnpT%2Bd2GEGGBvJN2iSr%2FAAAAAACAAAAAAAQZgAAAAEAACAAAAA5C0avgoOxzy0g8wtuZzNLaBQla80xMib%2FzC%2Ft9UuALwAAAAAOgAAAAAIAACAAAAAVgVKnWONXBwpQ%2FQynRYyeKOOZw8ZnvXuTf7SIoOTAGDAAAAD7kYmTiT%2FoNJJMIKh5KrXfhkyBndCsBDP4QnpepbcwWc6o30MXPHYCyAiJwt2Dy2pAAAAAQWB%2BSLeKghpSzeaKqUHL7LVhQ8%2FfLiCtjRL9V%2BL03xElOpifAfuaJ2NzMxckwj2z3BoQ%2BCb7lW9A6zBQMPSXGQ%3D%3D&requestUrl=http%3A%2F%2Flocalhost%3A1430%2F&browserName=Firefox&userAgent=Mozilla%2F5.0+(Windows+NT+10.0%3B+WOW64%3B+rv%3A54.0)+Gecko%2F20100101+Firefox%2F54.0 第 1 行，第 1 列：abort:1:1 POST XHR http://localhost:1430/CallCenter/Call [HTTP/1.1 500 内部服务器错误 18ms] 标头 POST 响应调用堆栈 Cache-ControlprivateContent-Length12174Content-Typetext/html； charset=utf-8DateTue，2017 年 8 月 22 日 17:26:58 GMTServerMicrosoft-IIS / 10.0X-ASPNET-Version4.0.30319X供电-ByASP.NETX-SourceFiles =？UTF-8 2 B 4 QzpcVXNlcnNcUmhvZGVzXERvd25sb2Fkc1xjbGlja3RvY2FsbC1jc2hhcnAtbWFzdGVyICgxKVxjbGlja3RvY2FsbC1jc2hhcnAtbWFzdGVyXENsaWNrVG9DYWxsLldlYlxDYWxsQ2VudGVyXENhbGw =？= 接受应用程序/json，文本/javascript，/； q=0.01Accept-Encodinggzip, deflateAccept-Languageen-US,en;q=0.5Connectionkeep-aliveContent-Length52Content-Typeapplication/x-www-form-urlencoded; charset=UTF-8Hostlocalhost:1430Refererhttp://localhost:1430/User-AgentMozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0X-Requested-WithXMLHttpRequest

换行符 67：

计算机日志：

Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 8/24/2017 11:53:34 AM 
Event time (UTC): 8/24/2017 3:53:34 PM 
Event ID: 9b90d28d894f41a09a832ce672308828 
Event sequence: 13 
Event occurrence: 1 
Event detail code: 0 

Application information: 
    Application domain: /LM/W3SVC/2/ROOT-1-131480635887199949 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\ 
    Machine name: DEV-103 

Process information: 
    Process ID: 74140 
    Process name: iisexpress.exe 
    Account name: DEV-103\Rhodes 

Exception information: 
    Exception type: NullReferenceException 
    Exception message: Object reference not set to an instance of an object.
   at ClickToCall.Web.Controllers.CallCenterController.<>c__DisplayClass7_0.<IsProduction>b__0(String domain) in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 68
   at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
   at ClickToCall.Web.Controllers.CallCenterController.IsProduction() in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 68
   at ClickToCall.Web.Controllers.CallCenterController.GetUri(String salesNumber) in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 54
   at ClickToCall.Web.Controllers.CallCenterController.<Call>d__5.MoveNext() in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 46
--- 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.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.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)



Request information: 
    Request URL: http://localhost:1430/CallCenter/Call 
    Request path: /CallCenter/Call 
    User host address: ::1 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: DEV-103\Rhodes 

Thread information: 
    Thread ID: 8 
    Thread account name: DEV-103\Rhodes 
    Is impersonating: False 
    Stack trace:    at ClickToCall.Web.Controllers.CallCenterController.<>c__DisplayClass7_0.<IsProduction>b__0(String domain) in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 68
   at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
   at ClickToCall.Web.Controllers.CallCenterController.IsProduction() in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 68
   at ClickToCall.Web.Controllers.CallCenterController.GetUri(String salesNumber) in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 54
   at ClickToCall.Web.Controllers.CallCenterController.<Call>d__5.MoveNext() in C:\Users\Rhodes\Documents\Visual Studio 2017\Projects\clicktocall-csharp-master\ClickToCall.Web\Controllers\CallCenterController.cs:line 46
--- 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.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<BeginInvokeAsynchronousActionMethod>b__36(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass33.<BeginInvokeActionMethodWithFilters>b__32(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.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)

Ngrok 隧道运行：

【问题讨论】：

您是否在服务器上获得任何有关此错误的日志？在这种情况下，很可能是导致问题的服务器。
在采用代码并将其部署到服务器之前，我在我的机器上本地运行它。我已经就他们的演示项目联系了 Twilio，但无济于事。我跟着他们的指南去了一个“T”。在我们代码的其他部分，我使用相同的令牌和电话号码拨打电话和短信没有问题。
我为 Twilio 工作，并希望为您解决此问题。如果你在本地运行，你能看到服务器日志吗？如果是这样，您能否在遇到错误时使用服务器日志示例更新您的问题？
我已经添加了从今天开始的日志，当我再次遇到错误时。
好吧，先说一句，我不是 C# 开发人员，也没有开发环境。但是，该错误表明问题出在line 68 of the CallCenterController。您可以在那时进行调试并尝试找出origin 的设置吗？也许你没有从标题中得到任何东西。

标签： c# twilio

【解决方案1】：

Rody，我是一名 Twilio 开发人员教育工作者，我们专门研究文档和那些教程。

您帮助我们发现了解决方案中的错误！我们假设 Origin 标头将被传递，但显然，FireFox doesn't send it for AJAX requests。我们已调整解决方案以查找“PublicUrl”AppSetting，以便该应用知道您的应用在何处公开托管，并可以将正确的 URL 发送到 Twilio。

下载最新版本的存储库并更新您的 ClickToCall.Web\Local.config 以在您的 ngrok URL 中包含“PublicUrl”设置（没有尾部斜杠）。我已经在 README 中记录了这一点，ClickToCall.Web\Local.config.example 中有一个示例。

其他人可能出现此问题的另一个可能原因是，如果您在本地运行但使用“localhost”而不是 ngrok。简而言之，这就是您需要做的所有事情：

选项 1：命令行

下载安装ngrok
运行以下命令启动隧道： ngrok http 1430 -host-header="localhost:1430"
这将创建一个独特的 ngrok url，类似于：8da2afef.ngrok.io
从 Visual Studio 运行应用程序，这样它就可以监听了。
在浏览器中打开该 ngrok URL 并测试应用程序。

选项 2：Visual Studio 扩展

下载安装ngrok Extensions
在 Visual Studio 中，打开 ClickToCall 解决方案，选择“工具”菜单并选择“启动 ngrok Tunnel”
这将创建一个独特的 ngrok url，类似于：8da2afef.ngrok.io
从 Visual Studio 运行应用程序，这样它就可以监听了。
在浏览器中打开该 ngrok URL 并测试应用程序。

对于令人困惑的文档，请接受我们的歉意。

【讨论】：

我正在运行 Ngrok 隧道，并尝试了您详述的两种方法，但仍然收到 500 内部服务器错误。
确保您在浏览器中使用 ngrok URL 而不是 localhost 运行应用程序。
如果您在我的帖子中看到最后一张图片，我会同时在本地主机和 ngrok URL 上运行它，并在两者上都出现错误。
有趣。它适用于 Chrome。我在您的屏幕截图中注意到您使用的是 FireFox，并且能够重现该错误。出于某种原因，FireFox 没有发送 Origin 标头。我将进行修复。相关：bugzilla.mozilla.org/show_bug.cgi?id=446344
感谢您的帮助！我会在 Chrome 中尝试。我想我需要等待修复才能为我们的网站调整代码，因为我们必须运行所有浏览器。