Documentation to test method of minimal example OPC UA server missing

[aliksimon]

In the nice gentle introduction to a minimal server on https://opcua-asyncio.readthedocs.io/en/latest/usage/get-started/minimal-server.html, it is described how to use uals and uaread to access variables and how to add a method. It is missing how to use uacall to use this method.

Since I tried for a while without success, it would be very helpful if an example how to call the method can be included.

For me, it worked with

$ uacall --url=opc.tcp://127.0.0.1:4840 -n i=85 -m 2:ServerMethod 3
resulting result_variants=6

I tried beforehand:

$ uacall --url=opc.tcp://127.0.0.1:4840 --nodeid "ns=2;s=ServerMethod" 3
No methods in selected node and no method given

and

$ uacall --url=opc.tcp://127.0.0.1:4840 --nodeid "ns=2;s=ServerMethod" -m ServerMethod 3

and

$ uacall --url=opc.tcp://127.0.0.1:4840 --nodeid "i=85" --method ServerMethod 3
The requested operation has no match to return.(BadNoMatch)

without success.

[aliksimon]

I just saw that the minimal OPC UA client uses the method and therefore somehow describe how to specify it. So mentioning this in the server docs would be a minimal solution but using the uacall would be preferred.