ONVIF相机未抛出事件

Question

我有几个要从中接收事件（例如，运动警报）的符合ONVIF的摄像机和编码器。

到目前为止，我设法订阅了（我认为）事件wsdl，但从未抛出任何事件。 我检查了设备中的设置，以确保它使用了运动检测，并且当运动存在时，我可以听到继电器的翻转，因此设置正确。

我将此问题作为尝试的参考，但由于未获得可接受的遮阳篷，因此我将再次询问。

这是我设置wsdl文件的方法：

ServicePointManager.Expect100Continue = false;
EndpointAddress endPointAddress = new EndpointAddress("http://" + CameraInformation.IpAddress + "/onvif/device_service");
HttpTransportBindingElement httpTransportBinding = new HttpTransportBindingElement { AuthenticationScheme = AuthenticationSchemes.Digest };
httpTransportBinding.KeepAliveEnabled = true;
TextMessageEncodingBindingElement textMessageEncodingBinding = new TextMessageEncodingBindingElement { MessageVersion = MessageVersion.CreateVersion(EnvelopeVersion.Soap12, AddressingVersion.WSAddressing10) };
PasswordDigestBehavior passwordDigestBehavior = new PasswordDigestBehavior(CameraInformation.Username, CameraInformation.Password);

CustomBinding customBinding = new CustomBinding(textMessageEncodingBinding, httpTransportBinding);
customBinding.SendTimeout = new TimeSpan(0, 0, 10);

这是我初始化消费者服务的方式：

_notificationConsumerService = new NotificationConsumerService();
_notificationConsumerService.NewNotification += _notificationConsumerService_NewNotification;
_notificationConsumerServiceHost = new ServiceHost(_notificationConsumerService, new Uri("http://localhost:8085/NotificationConsumerService"));
_notificationConsumerServiceHost.Open();

NotificationConsumerService类：

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Single, AddressFilterMode = AddressFilterMode.Any)]
public class NotificationConsumerService : OnvifEvents.NotificationConsumer
{
      public event EventHandler<EventArgs<OnvifEvents.Notify1>> NewNotification;

      public void Notify(OnvifEvents.Notify1 request)
      {
          var threadSafeEventHandler = NewNotification;
          if (threadSafeEventHandler != null)
              threadSafeEventHandler.Invoke(this, new EventArgs<OnvifEvents.Notify1>(request));
      }

      public Task NotifyAsync(System21.OnvifEvents.Notify1 request)
      {
         return new Task(() =>
            {
                 //return something?
            });
     }
}

     public class EventArgs<T> : EventArgs
     {
        public EventArgs(T data)
        {
            Data = data;
        }
        public T Data { get; set; }
     }

加载通知生成器客户端：

    var serviceAddress = new EndpointAddress(Capabilities.Events.XAddr.ToString());
    if (!string.IsNullOrWhiteSpace(CameraInformation.Username))
    {
         NotificationProducerClient.ClientCredentials.UserName.UserName = CameraInformation.Username;
         NotificationProducerClient.ClientCredentials.UserName.Password = CameraInformation.Password;
    }

最后添加事件订阅：

if (Capabilities.Events == null)
      throw new ApplicationException("The streamer info does not support event");
try
{
       if (NotificationProducerClient == null)
            LoadNotificationProducerClient();

       var subScribe = new OnvifEvents.Subscribe()
       {
            ConsumerReference = new OnvifEvents.EndpointReferenceType
            {
                  Address = new OnvifEvents.AttributedURIType { Value = _notificationConsumerServiceHost.BaseAddresses.First().ToString() },
            }
       };
       if (!string.IsNullOrWhiteSpace(initialTerminationTime))
            subScribe.InitialTerminationTime = initialTerminationTime;

       OnvifEvents.SubscribeResponse response = NotificationProducerClient.Subscribe(subScribe);
}

Catch (FaultException ex)
{
    Console.Write(ex.ToString());
}
catch (Exception ex)
{
    Console.Write(ex.ToString());
}

相关问题的一个可能的解决方法是，当应该将其设置为WSAddressing10时，AddressingVersion设置为None，但是我早些时候遇到过，所以这不是解决此问题的方法。

Answer 1

我认为您感觉到的继电器翻转是关于IR模式而不是运动检测。尝试在ODM中打开相机。 它是ONVIF发现和事件订阅的开源实现。

Answer 2

不确定是否相关，但仅通过查看此代码，不应调用

_notificationConsumerServiceHost = new ServiceHost(_notificationConsumerService, new Uri("http://localhost:8085/NotificationConsumerService"));

是这样的：

_notificationConsumerServiceHost = new ServiceHost(_notificationConsumerService, new Uri("http://<RemoteIP>:8085/NotificationConsumerService"));

即，“本地主机”可能无法解析摄像机上的主机，在这种情况下，呼叫请求将丢失。