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https://issues.apache.org/jira/browse/PLC4X-342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Hutcheson updated PLC4X-342:
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Attachment: image-2022-05-16-05-02-37-149.png
> OPC UA silently fails to handle subscription response
> -----------------------------------------------------
>
> Key: PLC4X-342
> URL: https://issues.apache.org/jira/browse/PLC4X-342
> Project: Apache PLC4X
> Issue Type: Bug
> Components: Driver-OPC-UA
> Affects Versions: 0.9.1
> Reporter: Łukasz Dywicki
> Assignee: Ben Hutcheson
> Priority: Major
> Attachments: Monitored Item Server Side ID.png,
> image-2022-05-16-05-02-37-149.png, opcua_monitored_item_wrong_index..pcapng
>
>
> While test of OPC UA simulator coming from freeopcua I found out that our
> client doesn't work with it. Maybe it is an issue of how they encode payload,
> maybe it is inconsistency in the spec, not sure - the end result is that
> actual response processing error gets swallowed and driver hangs.
> Guilty code is in {{OpcuaSubscriptionHandle}}:
> {code:java}
> for (MonitoredItemCreateResult result :
> responseMessage.getResults().toArray(new MonitoredItemCreateResult[0])) {
> if (OpcuaStatusCode.enumForValue(result.getStatusCode().getStatusCode())
> != OpcuaStatusCode.Good) {
> LOGGER.error("Invalid Field {}, subscription created without this
> field", fieldNames.get((int) result.getMonitoredItemId()));
> } else {
> LOGGER.debug("Field {} was added to the subscription",
> fieldNames.get((int) result.getMonitoredItemId() - 1)); // !monitored item id
> might be inconsistent!
> }
> }
> {code}
> Copy of traffic causing issue in attachment.
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