我们在Azure中有两个具有这种配置的环境（都位于西欧）：
测试：
阶段：
我们部署了相同的基于Umbraco + uCommerce的Web应用程序代码，但是在Stage环境中的性能要比在测试环境中差得多。在使用uCommerce API的页面上，性能最差。 Umbraco和uCommerce中的内容是相同的。在测试中，后端处理时间少于1秒，而在舞台上则约为20秒。我们在这些环境之间找不到任何配置差异。我可能会出什么问题？我们如何找到导致问题的原因？
编辑：
即使AzureCDNToolkit：CdnUrl值有效，Umbraco日志也会显示许多此类错误：
2018-07-30 13:07:20,429 [P9292/D2/T31] ERROR Our.Umbraco.AzureCDNToolkit.UrlHelperRenderExtensions - Error resolving media url from the CDN
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly
closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.ConnectStream.WriteHeaders(Boolean async)
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.GetResponse()
at Our.Umbraco.AzureCDNToolkit.UrlHelperRenderExtensions.<>c__DisplayClass6_1.b__0()
at Our.Umbraco.AzureCDNToolkit.UrlHelperRenderExtensions.TryFiveTimes(Action delegateAction)
at Our.Umbraco.AzureCDNToolkit.UrlHelperRenderExtensions.UrlToCdnUrl(String cropUrl, Boolean htmlEncode, String currentDomain)
修改
一段时间后，我发现一个问题：Azure使用TLS 1.2作为Azure Service的默认配置，因此要使其起作用，我要做的就是在应用程序启动时添加以下行：
ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;