TLS例外。未知安全传输错误'已关闭优雅'

Question

即使我的Unknown Secure Transport error 'ClosedGraceful'正在返回ServicePointManager.ServerCertificateValidationCallback，我仍然会收到此错误true。

完整的堆栈跟踪是......

     at Security.Tls.AppleTlsContext.CheckStatusAndThrow (SslStatus status, Security.SslStatus[] acceptable) [0x000b1] in /Users/builder/data/lanes/3339/39ebb778/source/maccore/src/Security/Tls/AppleTlsContext.cs:170 
  at Security.Tls.AppleTlsContext.Write (System.Byte[] buffer, Int32 offset, Int32 count, System.Boolean& wantMore) [0x0003f] in /Users/builder/data/lanes/3339/39ebb778/source/maccore/src/Security/Tls/AppleTlsContext.cs:883 
  at Security.Tls.MobileAuthenticatedStream.ProcessWrite (Security.Tls.AsyncProtocolRequest asyncRequest, AsyncOperationStatus status) [0x0002f] in /Users/builder/data/lanes/3339/39ebb778/source/maccore/src/Security/Tls/MobileAuthenticatedStream.cs:637 
  at Security.Tls.AsyncProtocolRequest.ProcessOperation (AsyncOperationStatus status) [0x00086] in /Users/builder/data/lanes/3339/39ebb778/source/maccore/src/Security/Tls/AsyncProtocolRequest.cs:199 
  at Security.Tls.AsyncProtocolRequest.ProcessOperation () [0x0000d] in /Users/builder/data/lanes/3339/39ebb778/source/maccore/src/Security/Tls/AsyncProtocolRequest.cs:159 
  at Security.Tls.AsyncProtocolRequest.StartOperation () [0x00000] in /Users/builder/data/lanes/3339/39ebb778/source/maccore/src/Security/Tls/AsyncProtocolRequest.cs:140 

我甚至尝试过添加

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSAllowsArbitraryLoads</key>
  <true/>
</dict>

至info.plist，但仍然没有运气

编辑：目前正在使用RestSharp

Answer 1

更改属性iOS Build＆gt;高级＆gt;从Apple到Mono的SSL / TLS实现。

Answer 2

接受的答案是正确的，但由于目前的视觉工作室没有这个选项，我们需要在iOSBuild下输入 mtouch argments - ＆gt; Code Generation＆amp;运行时 - ＆gt;其他mtouch参数