The Subscriptions have a publishing interval. The publishing interval of a Subscription defines the cyclic rate at which the Subscription executes. Each time it executes, it attempts to send a NotificationMessage to the Client. NotificationMessages contain Notifications that have not yet been reported to Client.
NotificationMessages are sent to the Client in response to Publish requests. Publish requests are normally queued to the Session as they are received, and one is de-queued and processed by a subscription related to this Session for each publishing cycle, if there are Notifications to report. When there are not, the Publish request is not de-queued from the Session, and the Server waits until the next cycle and checks again for Notifications.
Object Model
Syntax
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As Subscription | |
| C# | |
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[DataContractAttribute(Namespace="http://opcfoundation.org/UA/2008/02/Types.xsd", IsNamespaceSetExplicitly=true)] public class Subscription | |
Inheritance Hierarchy
System.Object
Advosol.EasyUA.Subscription
Requirements
Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2015, .NET4.x