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我需要的是在 SL 应用程序和 Ria 服务之间保持连接。超时通过后，它会在第一次服务调用时引发异常。

我试图做的是定期调用：

var client = new WebClient();
client.DownloadStringAsync(new Uri("../SomePage.aspx", UriKind.Relative));

和服务方法：

svc.HeartBeat();

定期我的意思是每 X 秒一次，其中 X < 超时。

我正在测试心跳和身份验证之间的 60 秒延迟设置为：

<authentication mode="Forms">
  <forms timeout="2" slidingExpiration="true" />
</authentication>

无论如何，3分钟后我得到：

Unhandled Error in Silverlight Application 
Code: 4004    
Category: ManagedRuntimeError        
Message: System.ServiceModel.DomainServices.Client.DomainOperationException: Invoke operation 'HeartBeat' failed. Access to operation 'HeartBeat' was denied.
w System.ServiceModel.DomainServices.Client.OperationBase.Complete(Exception error)
w System.ServiceModel.DomainServices.Client.InvokeOperation.Complete(Exception error)
w System.ServiceModel.DomainServices.Client.DomainContext.CompleteInvoke(IAsyncResult asyncResult)
w System.ServiceModel.DomainServices.Client.DomainContext.<>c__DisplayClass38.<InvokeOperation>b__34(Object )

和

HTTP/1.1 500 Internal Server Error
Server: ASP.NET Development Server/11.0.0.0
Date: Mon, 16 Sep 2013 09:46:37 GMT
X-AspNet-Version: 4.0.30319
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 5108
Connection: Close

[Exception: Access denied.]
Pol.Backend.Web.SystemMessageViewer.Page_Load(Object sender, EventArgs e) in c:\Users\xyz\Documents\Visual Studio\Abc.Web\SomePage.aspx.cs:13
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
System.Web.UI.Control.OnLoad(EventArgs e) +92
System.Web.UI.Control.LoadRecursive() +54
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772

（访问被拒绝时抛出：

if (this.User == null || !this.User.Identity.IsAuthenticated)
{
    throw new Exception("Access denied.");
}

)

我还可以做些什么？

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0 回答 0