Azure IoT 中心 - 无法建立连接，因为目标机器主动拒绝它

Question

今天早上我试着浏览了微软的 tutorial for connecting to an Azure IoT Hub with .NET.

唯一的区别是我的集线器的名称，我选择了标准的 S1 定价层，因为我计划'grow'我的原型使用本教程作为起点。

然而，当我尝试运行控制台应用程序时，接收客户端在以下位置抛出错误：

var d2cPartitions = eventHubClient.GetRuntimeInformation().PartitionIds;

完整错误信息如下：

  Microsoft.ServiceBus.Messaging.MessagingCommunicationException was unhandled
  HResult=-2146233088
  IsTransient=true
  Message=An error occurred during communication with 'DeviceGateway_{auto generated alphanumeric string here}:iothub-ns-{auto generated connection details here}.servicebus.windows.net:5671'. Check the connection information, then retry.
  Source=Microsoft.ServiceBus
  StackTrace:
       at Microsoft.ServiceBus.Common.ExceptionExtensions.ThrowException(Exception exception)
       at Microsoft.ServiceBus.Common.ExceptionExtensions.Rethrow(Exception exception)
       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 R:\SRE_Prototypes\IoTHubGetStarted\ReadDeviceToCloudMessages\Program.cs:line 22
       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: 
       ErrorCode=10061
       HResult=-2147467259
       Message=No connection could be made because the target machine actively refused it
       NativeErrorCode=10061
       Source=mscorlib
       StackTrace:
            at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
            at Microsoft.ServiceBus.Common.ExceptionExtensions.Rethrow(Exception exception)
            at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.Amqp.Transport.AmqpTransportInitiator.ConnectAsyncResult.End(IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.Amqp.Transport.AmqpTransportInitiator.EndConnect(IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.Amqp.AmqpMessagingFactory.ConnectAsyncResult.<>c.<GetAsyncSteps>b__13_3(ConnectAsyncResult thisPtr, IAsyncResult r)
            at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
            at Microsoft.ServiceBus.Common.ExceptionExtensions.Rethrow(Exception exception)
            at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.Amqp.AmqpMessagingFactory.ConnectAsyncResult.End(IAsyncResult result, ConnectInfo& info)
            at Microsoft.ServiceBus.Messaging.Amqp.AmqpMessagingFactory.RedirectConnectionManager.OnEndCreateInstance(IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.SingletonDictionaryManager`2.LoadInstanceAsyncResult.<>c.<GetAsyncSteps>b__13_3(LoadInstanceAsyncResult thisPtr, IAsyncResult r)
            at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
         --- End of stack trace from previous location where exception was thrown ---
            at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
            at Microsoft.ServiceBus.Common.ExceptionExtensions.Rethrow(Exception exception)
            at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
            at Microsoft.ServiceBus.Common.AsyncResult`1.End(IAsyncResult asyncResult)
            at Microsoft.ServiceBus.Messaging.SingletonDictionaryManager`2.LoadInstanceAsyncResult.End(IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.SingletonDictionaryManager`2.EndLoadInstance(IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.Amqp.AmqpMessagingFactory.RedirectConnectionManager.EndGetConnection(IAsyncResult result)
            at Microsoft.ServiceBus.Messaging.Amqp.AmqpMessagingFactory.OpenLinkAsyncResult.<>c.<GetAsyncSteps>b__35_11(OpenLinkAsyncResult thisPtr, IAsyncResult r)
            at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)
       InnerException:

到目前为止，我的研究表明这是某种服务器设置问题，通常是由于需要打开端口或更改防火墙设置引起的，但是 A) 我无法在 Azure 仪表板中找到任何地方来执行此操作 B) 我原以为默认情况下它会为此正确配置

是否有明显的我遗漏的东西，或者我是否需要开始追查我的 IT 部门，看看他们是否阻止了它？

Answer 1

无需在 Azure 门户中进行配置即可打开任何端口。但是，本教程中的 Receive Client 应用程序需要打开端口 5671（它使用 AMQP 协议与 IoT 中心通信）——可能是您计算机上的防火墙配置或您的公司防火墙阻止了此端口。

Azure IoT 中心 - 无法建立连接，因为目标机器主动拒绝它

Azure IoT Hub - No connection could be made because the target machine actively refused it

c#

azure-iot-hub