Diffusion .NET Client Library
6.1.5
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The stream that will be called when a session subscribes or fetches using a topic selector that matches no topics. More...
Public Member Functions | |
void | OnMissingTopic (IMissingTopicNotification notification) |
Called when a session requests a topic that does not exist, and the topic path belongs to part of the topic tree for which this stream was registered. More... | |
Public Member Functions inherited from PushTechnology.ClientInterface.Client.Callbacks.IStream | |
void | OnClose () |
Notification that a stream context was closed normally. More... | |
Public Member Functions inherited from PushTechnology.ClientInterface.Client.Callbacks.ICallback | |
void | OnError (ErrorReason errorReason) |
Notification of a contextual error related to this callback. More... | |
The stream that will be called when a session subscribes or fetches using a topic selector that matches no topics.
Stream instances can be registered using ITopicControl.AddMissingTopicHandlerAsync(string,IMissingTopicNotificationStream).
Since 6.0
void PushTechnology.ClientInterface.Client.Features.Control.Topics.IMissingTopicNotificationStream.OnMissingTopic | ( | IMissingTopicNotification | notification | ) |
Called when a session requests a topic that does not exist, and the topic path belongs to part of the topic tree for which this stream was registered.
The implementation should take the appropriate action (for example, create the topic), and then call IMissingTopicNotification.Proceed() on the given notification . This allows the session request to continue and successfully resolve against the topic if it was created.
Alternatively, the stream can call IMissingTopicNotification.Cancel() to discard the request. A stream should always call IMissingTopicNotification.Proceed() or IMissingTopicNotification.Cancel(), otherwise resources will continue to be reserved on the server and the session's request will not complete.
notification | The missing topic notification. |
Implemented in PushTechnology.ClientInterface.Client.Features.Control.Topics.MissingTopicNotificationStreamDefault.