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nauful / LibUA

Open-source OPC UA client and server library
Apache License 2.0
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Help with Nodemethods and arguments #60

Closed madagaga closed 3 years ago

madagaga commented 3 years ago

Using Ua expert as client, I've successfully created the node tree with a node method and a nodemethod with argument. But I can't browse correctly the InputArguement node. I've noticed that ExpandedObject is not really used, I already added it in "GetVariantTypeFromType"

I think the Argument object is missing, and I don't know how to encode it correctly.

nauful commented 3 years ago

Please capture the traffic with Wireshark and upload it here. I can take a look and tell you what is missing. Most likely you'd have to serialize into an ExtensionObject. I don't have any samples of doing this and the UA specification is unclear.

madagaga commented 3 years ago

Yes, I checked on other projects. So I created a Argument object and encoded it correctly in an ExtensionObject. My mistake was on the string encoder. Now it's OK on ua expert but only in the tree view, I can see all nodes and arguments. The last thing is to be able to call the method with arguments in UA expert. I continue to check. Thanks for the help !

madagaga commented 3 years ago

Ok found. There is an issue in HandleTranslateBrowsePathRequest Line if (target.BrowseName.Equals(rp.TargetName)) should be if (target.BrowseName.Name.Equals(rp.TargetName.Name)) as ua expert doesn't send the good namespace identifier in the request .

nauful commented 3 years ago

Just took a look at the source, both BrowseName and TargetName are QualifiedNames. This means that equality includes a test for namespace and value. This is likely a bug in uaexpert, namespaces are independent and comparing values across namespaces shouldn't match.