OPC UA client can't connect through firewall to OPC UA server on groov EPIC/RIO; server reports unrecognized client

Applies To:

Firmware for the following groov EPICs:

GRV-EPIC-PR1
GRV-EPIC-PR2

Firmware for the following groov RIOs:

GRV-R7-MM1001-10
GRV-R7-MM2001-10
GRV-R7-I1VAPM-3

Versions Affected:

For groov EPICs: 3.4.0 to 3.4.5
For groov RIOs: 3.4.0 to 3.4.1

Resolved In Version:

For groov EPICs and groov RIOs: 3.5.0

Symptoms:

If the OPC UA clients connect to the Data Service OPC UA server on groov EPIC or groov RIO through a firewall router configured with port forwarding or NAT passthrough, you will see the following:

The OPC UA client reports that it cannot connect to the Data Service’s OPC UA server.
The Data Service reports that it cannot connect to the groov EPIC or groov RIO’s OPC UA Server and the Data Service log files contain a message similar to the following:

ERROR|2022-02-28 09:10:09,629|UascServerHelloHandler.java|224|[remote=/1.2.3.4:55566] Exception caught; sent ErrorMessage{error=StatusCode{name=Bad_TcpEndpointUrlInvalid, value=0x80830000, quality=bad}, reason=unrecognized endpoint url: opc.tcp://1.2.3.4:14840/Groov}

Workaround:

Contact Opto 22 Product Support for help with a workaround.

Resolution:

Opto 22 has resolved this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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