Question

我正在深入研究azure Iot集线器和连接技术，使用此处的教程：https://azure.microsoft.com/nl-nl/documentation/articles/iot-hub-csharp-csharp-getstarted/

运行接收器示例时（文章的这一部分：https://azure.microsoft.com/nl-nl/documentation/articles/iot-hub-csharp-csharp-getstarted/#receive-device-to-cloud-messages）

我收到错误：

var d2cPartitions = eventHubClient.GetRuntimeInformation().PartitionIds;

我收到此错误（底部的完整错误日志）：

Message=An AMQP error occurred (condition='amqp:link:redirect').

我无法找到导致此问题的原因，因为我使用了一个基本示例，并且我的集线器显示正确配置。发送工作很好btw。有人有想法吗？

完整的错误日志：

Microsoft.ServiceBus.Messaging.MessagingException was unhandled
  HResult=-2146233088
  IsTransient=true
  Message=An AMQP error occurred (condition='amqp:link:redirect').
  Source=Microsoft.ServiceBus
  StackTrace:
Server stack trace: 
Exception rethrown at [0]: 
   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
   at Microsoft.ServiceBus.Messaging.AmqpClient.AmqpManagementLink.EndCreateManagementLink(IAsyncResult result)
   at Microsoft.ServiceBus.Messaging.Amqp.FaultTolerantObject`1.CreateAsyncResult.<GetAsyncSteps>b__4(CreateAsyncResult thisPtr, IAsyncResult r)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
Exception rethrown at [1]: 
   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End(IAsyncResult asyncResult)
   at Microsoft.ServiceBus.Messaging.Amqp.FaultTolerantObject`1.OnEndCreateInstance(IAsyncResult asyncResult)
   at Microsoft.ServiceBus.Messaging.SingletonManager`1.EndGetInstance(IAsyncResult asyncResult)
   at Microsoft.ServiceBus.Messaging.AmqpClient.AmqpManagementLink.AmqpManagementOperationAsyncResult`1.<GetAsyncSteps>b__21(T thisPtr, IAsyncResult r)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
Exception rethrown at [2]: 
   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
   at Microsoft.ServiceBus.Messaging.Amqp.AmqpEventHubClient.GetRuntimeInfoAsyncResult.<GetAsyncSteps>b__18(GetRuntimeInfoAsyncResult thisPtr, IAsyncResult r)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
Exception rethrown at [3]: 
   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.RunSynchronously()
   at Microsoft.ServiceBus.Messaging.Amqp.AmqpEventHubClient.GetRuntimeInformation()
   at ReadDeviceToCloudMessages.Program.Main(String[] args) in C:\Users\tmartena\documents\visual studio 2015\Projects\azureTestDevice\ReadDeviceToCloudMessages\Program.cs:line 21
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   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.Threading.ThreadHelper.ThreadStart()
InnerException:

Answer 1

您的问题来自您的企业代理。您可以通过将Service Bus环境通信模式设置为HTTP，轻松地为EventHubClient定义代理。在你的c＃中添加：

ServiceBusEnvironment.SystemConnectivity.Mode = ConnectivityMode.Http;

然后在你的app.config文件中添加：

 <system.net>
    <defaultProxy>
      <proxy bypassonlocal="True" proxyaddress="http://proxyadress:port" />
    </defaultProxy>
  </system.net>

希望有所帮助

Answer 2

好的，这很奇怪。这解决了自己。在发布此内容后我离开了家，测试发送和接收程序工作正常。（是的，为了安全，我确实重启了它们）

原因？不知道。也许集线器的每日清理解决了它，但它仍然很奇怪。

如果有人遇到这个问题并且有明确的原因和解决方案，请将其作为答案。如果再次发生这种情况，可能需要它。

可能的原因是关闭端口或代理服务器不让程序请求通过。我在家里尝试了它，没有代理，它工作正常。因此，如果您遇到此问题，请在其他位置尝试。

Azure IoT hub基本接收示例，AMQP错误

2 个答案: