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Websocket subscription authorization exception

Solved705 views9th April 2024WebSocket
1
Jeroen Geldhof [SLC] [DevOps Enabler]5.07K 8th April 2024 0 Comments

I’m trying to set up a websocket.  That succeeds, but when I send requests to subscribe to parameters it fails with a message NotAuthorizedException.

In Cube I can access the element and the parameter.

Am I missing a step to do the subscription?

Jeroen Geldhof [SLC] [DevOps Enabler] Selected answer as best 9th April 2024

1 Answer

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5
Elian Vantomme [SLC] [DevOps Advocate]244 Posted 9th April 2024 2 Comments

Hello Jeroen,

When you establish a connection to the WebSocket, such as through Postman, you won’t be authenticated to the WebAPI. To authenticate, you’ll need to send a ‘SetConnectionID’ message, which utilizes a ‘connectionID’ obtained from a prior POST request, similar to how you would authenticate to a Dashboard or LCA.

Hope this helps!

Jeroen Geldhof [SLC] [DevOps Enabler] Posted new comment 9th April 2024
Jeroen Geldhof [SLC] [DevOps Enabler] commented 9th April 2024

I did the SetConnectionID, which returned ‘1’
Then I did a GetParameter

{
“ClientSubscriptionID”: 1,
“Method”: “GetParameter”,
“Parameters”: {
“dmaID”: 822,
“elementID”: 1,
“parameterID”: 350,
“filters”: []
}
}

Then I got following reply:

{
“__type”: “Skyline.DataMiner.Web.v1.WebSockets.WebSocketServerMessage”,
“Data”: {
“__type”: “Skyline.DataMiner.Web.Common.v1.WebSocketError”,
“Message”: “Parameter u0027tableIndexu0027 is not defined.”,
“StackTrace”: null,
“ExceptionType”: “WebApiException”
},
“Type”: “WebSocketError”,
“ClientSubscriptionID”: 1
}

I checked, and parameter 350 exists on that element

Jeroen Geldhof [SLC] [DevOps Enabler] commented 9th April 2024

nevermind, I added “tableIndex”, and then it worked!
🙂

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