Session Cloning or Subscription Replication Across Redundant Endpoints

[TaheJdidi]

Type of issue

• Bug
• Enhancement
• Compliance
• Question
• Help wanted

Current Behavior

Hi OPC Foundation team,

I’m working on an OPC UA client that handles failover between redundant servers (e.g., S1 to S2). I’d like to know if there’s any existing feature or example in your repositories that supports cloning or replicating a session — particularly subscriptions and monitored items — from one endpoint to another during failover.

In other words, if the client is monitoring nodes on S1 and then reconnects to S2, is there any mechanism (in the SDK or sample projects) to automatically recreate the same monitored items on the new server?

Thanks in advance for your guidance.

Best regards,

Expected Behavior

No response

Steps To Reproduce

No response

Environment

- OS:
- Environment:
- Runtime:
- Nuget Version:
- Component:
- Server:
- Client:

Anything else?

No response

[romanett]

Please take a look at the methods for recreate / reconnect maybe you could use those for the usecase.

UA-.NETStandard/Libraries/Opc.Ua.Client/Session/Session.cs

Line 6167 in a6efccb

private void RecreateSubscriptions(IEnumerable<Subscription> subscriptionsTemplate)

Feel free to propose a PR if new overloads / methods / parameters /virtual are needed.