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03/19/2024
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Hi Team,
I have a requirement to implement Local Discovery Server.
Our client uses OPCUA java stack 1.4 SDK. Does the SDK have support for Discovery API?
Also, would like to know about valid use case for having LDS in the OPC UA client.
Thanks,
Chirantan
05/30/2017
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You should not be implementing an LDS unless you are deploying s/w that only runs on a device you are building.
If you are building generic s/w to be installed on any machine then you should be using the standard LDS.
Why does this requirement exist?
03/31/2020
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Hi Randy,
The actual requirement is to List the OPC servers behind the given Discovery Server, and allow user to choose the server for creating connection with the endpoint.
But, We are also trying to understand the use cases and the problem statement that the LDS/GDS function can solve as per the OPC Reference. Our intent is to integrate the discovery service with our client to improve the product and make it more robust, enhanced, future-proof and OPC UA compliant.
Can you help us with more details around this?
Thanks,
Pradeep
05/30/2017
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Again: if your client is installed on machine with other OPC UA applications which you do not write then you cannot include an LDS.
To meet your requirement your client has to connect to an LDS running on a host with Servers and call FindServers.
If the LDS is not running on the host you have a error to report.
IOW, the LDS is tied to machine running the Servers – not the machine running the Clients.
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