'Declaration
 
Property KeepAliveInterval As Integer

'Usage
 
Dim instance As _UASmartSessionParameters
Dim value As Integer
 
instance.KeepAliveInterval = value
 
value = instance.KeepAliveInterval

int KeepAliveInterval {get; set;}

property int KeepAliveInterval {
   int get();
   void set (    int value);
}

Property Value

This interval controls (but does not directly mean) how much time elapses before a communication error is detected.

Note that by default, KeepAliveInterval value gets effectively clamped to 25% of the SessionTimeout.

This parameter is not interpreted by the component; it is simply passed down to the OPC UA Stack for processing.

Subscription Service Set: "When there are no Notifications to send within the keep-alive time interval, the Server sends a keep-alive Message … . If a Client fails to receive a Message after the keep-alive interval has expired, or if it determines that it has missed a Message, it can request the Server to resend one or more Messages."

In order to obtain or modify this parameter, in the default state (when OpcLabs.EasyOpc.UA.EasyUAClientCore.Isolated equals to false), access OpcLabs.EasyOpc.UA.Engine.UAClientAdaptableParameters.SessionParameters property of static OpcLabs.EasyOpc.UA.EasyUAClientCore.AdaptableParameters. If you have set OpcLabs.EasyOpc.UA.EasyUAClientCore.Isolated to true, you need to access OpcLabs.EasyOpc.UA.Engine.UAClientAdaptableParameters.SessionParameters property of OpcLabs.EasyOpc.UA.EasyUAClientCore.IsolatedParameters.

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows