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我在使用來自我的.NET Core 1.1 Web應用程序的HTTPS（TLS 1.2）對外部API進行HTTP調用時出現問題。該應用程序運行正常在本地，但在部署到Azure的應用程序服務，我得到以下異常：Asp.Net核心：在調用外部API時出現HttpRequestException
exceptionMessage:An error occurred while sending the request.
exceptionType:System.Net.Http.HttpRequestException
內部異常是：
innerExceptionMessage:A security error occurred
innerExceptionType:System.Net.Http.WinHttpException
奇怪的是，我沒有得到這個例外在對外部API的所有請求中，它只發生一些時間。
我注意到類似的問題已經在其他SO帖子中討論過，但是其中大部分都是關於自簽名證書的。就我而言，遠程服務器正在使用由GeoTrust簽名的證書。
所有呼叫正在與System.Net.Http.HttpClient
相關製作：
- Asp.Net Core: Calling another REST-Api throws WebException
- .net core API Post exception gives NativeErrorCode 12175
- HTTPS request fails using HttpClient
- Security Error, post with Client Certificate (Self-signed Root) on Azure (Asp.net core)
完全堆棧跟蹤：
{ exceptionType: "System.Net.Http.HttpRequestException", innerException: { innerStacktrace: " at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() at System.Net.Http.WinHttpHandler.<StartRequest>d__105.MoveNext()", innerExceptionMessage: "A security error occurred", innerExceptionType: "System.Net.Http.WinHttpException" }, stacktrace: " at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() at System.Net.Http.HttpClient.<FinishSendAsync>d__58.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 Integration.Services.ApiService.<PostResourceToApiAsync>d__5`1.MoveNext() in C:\projects\integration\src\Integration\Services\ApiService.cs:line 112 --- 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 Integration.Services.AccountService.<NotifyOwnerAsync>d__12.MoveNext() in C:\projects\integration\src\Integration\Services\AccountService.cs:line 115 --- 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 Integration.Services.AccountService.<CreateAccountAsync>d__9.MoveNext() in C:\projects\integration\src\Integration\Services\AccountService.cs:line 66 --- 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 Integration.Services.PartnerService.<CreateAccountAsync>d__11.MoveNext() in C:\projects\integration\src\Integration\Services\PartnerService.cs:line 100 --- 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 Integration.Controllers.AccountsController.<Create>d__7.MoveNext() in C:\projects\integration\src\Integration\Controllers\AccountsController.cs:line 92 --- 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 Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionMethodAsync>d__27.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 Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextActionFilterAsync>d__25.MoveNext() --- End of stack trace from previous location where exception was thrown --- at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextExceptionFilterAsync>d__24.MoveNext()", exceptionMessage: "An error occurred while sending the request." }
你也可以得到堆棧跟蹤嗎？另外如果可能的話，嘗試[system.net tracing]（https://docs.microsoft.com/en-us/dotnet/framework/network-programming/how-to-configure-network-tracing） –
I'我添加了完整的堆棧跟蹤，但我還沒有得到system.net跟蹤工作。 –
請按照此步驟啓用system.net跟蹤https://blogs.msdn.microsoft.com/benjaminperkins/2017/01/05/enable-system-net-tracing-on-azure-app-service-unable-to-連接到遠程服務器/ –