asp.net - ADAL token 不刷新

Question

我有一个 ASP.NET Webforms 应用程序，在其中使用与 Azure Active Directory 关联的 Azure Key Vault。我使用了这里找到的指南 https://azure.microsoft.com/en-us/documentation/articles/storage-encrypt-decrypt-blobs-key-vault/ 用于从 Azure Active Directory 为我的应用程序获取 token 并使用它来访问我的 key 保管库，我最终将其用于存储加密。应用程序第一次请求 token 时一切正常，但在 token 过期后(一小时后)。应用程序不会按其应有的方式检索新 token 。我正在使用最新的稳定版本 Microsoft.IdentityModel.Clients.ActiveDirectory 2.19.208020213，并且也尝试了最新的预版本 (3.5.208051316-alpha)。

GetToken 方法如下所示

 Public Async Function GetToken(authority As String, resource As String, scope As String) As Task(Of String)
    Dim authContext = New AuthenticationContext(authority)
    Dim clientCred As New ClientCredential(CloudConfigurationManager.GetSetting("ClientID"), CloudConfigurationManager.GetSetting("ClientSecret"))
    System.Diagnostics.Trace.TraceInformation("Attempting to acquire auth token")
    Dim result As AuthenticationResult = await authContext.AcquireTokenAsync(resource, clientCred)
   System.Diagnostics.Trace.TraceInformation("Auth returned")
    If result Is Nothing Then
        System.Diagnostics.Trace.TraceInformation("Auth was null")
        Throw New InvalidOperationException("Failed to obtain the JWT token")
    End If
     System.Diagnostics.Trace.TraceInformation("Returning auth access token")
    Return result.AccessToken
End Function

此处用于获取与 key 保管库的连接

Dim cloudResolver As New KeyVaultKeyResolver(AddressOf GetToken)

GetToken 方法仅卡在 AcquireTokenAsync 处。我已在 ADAL 中打开详细日志记录，这就是日志显示的内容，它会停止并且 GetToken 永远不会返回。

-Application: 2015-09-21T17:12:13  PID[8884] Information 9/21/2015 5:12:13 PM: 19ce5dc3-d618-48e9-8bbd-c5b3ad31bfc2 - TokenCache: Looking up cache for a token...
-Application: 2015-09-21T17:12:13  PID[8884] Information 9/21/2015 5:12:13 PM: 19ce5dc3-d618-48e9-8bbd-c5b3ad31bfc2 - TokenCache: An item matching the requested resource was found in the cache
-Application: 2015-09-21T17:12:13  PID[8884] Information 9/21/2015 5:12:13 PM: 19ce5dc3-d618-48e9-8bbd-c5b3ad31bfc2 - TokenCache: An expired or near expiry token was found in the cache
-Application: 2015-09-21T17:12:13  PID[8884] Information 9/21/2015 5:12:13 PM: 19ce5dc3-d618-48e9-8bbd-c5b3ad31bfc2 - TokenCache: An old item was removed from the cache

此外，我尝试通过将 token 缓存设置为 Nothing 来关闭 token 缓存，然后 ADAL 甚至无法在第一次检索访问 token 。

Answer 1

我在这个类似的问题中找到了答案Azure KeyVault Active Directory AcquireTokenAsync timeout when called asynchronously

关键是删除其中任何一个并将其替换为等待

.GetAwaiter().GetResult()

例如，这是原来的

Dim theKey = cloudResolver.ResolveKeyAsync($"{CloudConfigurationManager.GetSetting("KeyVaultUrl")}Secret/", CancellationToken.None).GetAwaiter().GetResult()

已替换为

Dim theKey = await cloudResolver.ResolveKeyAsync($"{CloudConfigurationManager.GetSetting("KeyVaultUrl")}Secret/", CancellationToken.None)