无法调用Azure搜索特定的asp.net .netframework 4.7.1项目(RequestFailedException)

Question

我有一个asp.net 4.7.1项目(在过去6-7年间升级到4.7.1 )，我无法从该项目中连接/调用Azure Searchc中的任何方法。我得到了一个RequestFailedException (结束时的完整日志)

不幸的是，我不能复制在新的控制台应用程序，新的Asp.net 4.7.1项目！

我在同一台Visual 2022的同一台机器上运行所有类型的项目。

我用相同的代码和相同版本的Nuget (11.3.0)调用搜索服务。(我尝试过早期版本，也尝试过11.1.1，但也有相同的错误)。我使用的是相同的服务/索引和键(目前只是一个免费服务，但如果遇到其他服务，则没有任何不同)。

我的遗嘱是：

var searchIndexClient = new SearchIndexClient(new 
Uri($"https://sfsearchtest.search.windows.net"),
new AzureKeyCredential("70C978F2751C051E0BF156B0....."),
options);
noIndexes = searchIndexClient.GetIndexes().Count();

(我把钥匙弄糊涂了)

如果我尝试callanothr方法，那么"GetIndexes“并不重要。同样的错误。注意，我已经设置了MaxRetries = 0；但是更多的重试会产生相同的错误，所以我已经拒绝了0重试。

在经历了几天的挫折/测试之后，帮助真的得到了赏识。请不要要求我将项目更新为.Netcore ;-)

我对“我的项目”的ddl和新创建的4.7.1项目进行了比较，它们是完全相同的文件。

下面是一个错误日志(来自AzureEventSourceListener.CreateConsoleLogger和

AzureEventSourceListener.CreateTraceLogger).

Azure-Core: [Informational] Request [916938f7-cc37-483b-a134-33ca2c69d22b] GET https://sfsearchtest.search.windows.net/indexes?$select=*&api-version=2020-06-30
Accept:application/json; odata.metadata=minimal
api-key:REDACTED
x-ms-client-request-id:916938f7-cc37-483b-a134-33ca2c69d22b
x-ms-return-client-request-id:true
User-Agent:azsdk-net-Search.Documents/11.3.0 (.NET Framework 4.8.4420.0; Microsoft Windows 10.0.19044 )
client assembly: Azure.Search.Documents
Azure-Core: [Informational] Request [916938f7-cc37-483b-a134-33ca2c69d22b] GET https://sfsearchtest.search.windows.net/indexes?$select=*&api-version=2020-06-30
Accept:application/json; odata.metadata=minimal
api-key: REDACTED
x-ms-client-request-id:916938f7-cc37-483b-a134-33ca2c69d22b
x-ms-return-client-request-id:true
User-Agent:azsdk-net-Search.Documents/11.3.0 (.NET Framework 4.8.4420.0; Microsoft Windows 10.0.19044 )
client assembly: Azure.Search.Documents
Exception thrown: 'System.Net.Sockets.SocketException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.ObjectDisposedException' in System.dll
Exception thrown: 'System.Net.Sockets.SocketException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.IO.IOException' in System.dll
Exception thrown: 'System.ObjectDisposedException' in System.dll
Exception thrown: 'System.Net.WebException' in System.dll
Exception thrown: 'System.Net.WebException' in System.dll
Exception thrown: 'Azure.RequestFailedException' in Azure.Core.dll
Exception thrown: 'Azure.RequestFailedException' in mscorlib.dll
Exception thrown: 'Azure.RequestFailedException' in mscorlib.dll
Azure-Core: [Informational] Request [916938f7-cc37-483b-a134-33ca2c69d22b] exception Azure.RequestFailedException: The underlying connection was closed: An unexpected error occurred on a send.
   at Azure.Core.Pipeline.HttpWebRequestTransport.<ProcessInternal>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Azure.Core.Pipeline.HttpWebRequestTransport.Process(HttpMessage message)
   at Azure.Core.Pipeline.HttpPipelinePolicy.ProcessNext(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.RequestActivityPolicy.ProcessNextAsync(HttpMessage message, ReadOnlyMemory`1 pipeline, Boolean async)
   at Azure.Core.Pipeline.RequestActivityPolicy.Process(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.HttpPipelinePolicy.ProcessNext(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.ResponseBodyPolicy.<ProcessAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Azure.Core.Pipeline.ResponseBodyPolicy.Process(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.HttpPipelinePolicy.ProcessNext(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.LoggingPolicy.<ProcessAsync>d__9.MoveNext()
Azure-Core: [Informational] Request [916938f7-cc37-483b-a134-33ca2c69d22b] exception Azure.RequestFailedException: The underlying connection was closed: An unexpected error occurred on a send.
   at Azure.Core.Pipeline.HttpWebRequestTransport.<ProcessInternal>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Azure.Core.Pipeline.HttpWebRequestTransport.Process(HttpMessage message)
   at Azure.Core.Pipeline.HttpPipelinePolicy.ProcessNext(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.RequestActivityPolicy.ProcessNextAsync(HttpMessage message, ReadOnlyMemory`1 pipeline, Boolean async)
   at Azure.Core.Pipeline.RequestActivityPolicy.Process(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.HttpPipelinePolicy.ProcessNext(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.ResponseBodyPolicy.<ProcessAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Azure.Core.Pipeline.ResponseBodyPolicy.Process(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.HttpPipelinePolicy.ProcessNext(HttpMessage message, ReadOnlyMemory`1 pipeline)
   at Azure.Core.Pipeline.LoggingPolicy.<ProcessAsync>d__9.MoveNext()
Exception thrown: 'Azure.RequestFailedException' in Azure.Core.dll
Exception thrown: 'Azure.RequestFailedException' in mscorlib.dll
Exception thrown: 'Azure.RequestFailedException' in mscorlib.dll
Exception thrown: 'Azure.RequestFailedException' in mscorlib.dll
Exception thrown: 'Azure.RequestFailedException' in Azure.Search.Documents.dll

Answer 1

好的。我设法解决了。简短的答覆是：

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls12;

Tls以前也曾引起过问题。不知道为什么我的旧项目会导致这个问题(找不到任何关于tls的东西)。幸运的是，这起了作用:)