HTTP error 401 when trying to download from depot

[wandermaus]

I use node-steam-user and node-csgo-cdn. I had the same Issue as described in this post. Fixed it with this pull request.
My application worked perfectly fine until this morning. When "node-csgo-cdn" trys to download the latest files from the depot,
it throws following error.

Quote

node:internal/process/promises:279
            triggerUncaughtException(err, true /* fromPromise */);
            ^
OperationalError: HTTP error 401
    at ClientRequest.<anonymous> (node_modules\steam-user\components\cdn.js:572:13)
    ... 9 lines matching cause stack trace ...
    at TCP.onStreamRead (node:internal/stream_base_commons:190:23) {
  cause: Error: HTTP error 401
      at ClientRequest.<anonymous> (node_modules\steam-user\components\cdn.js:572:13)
      at Object.onceWrapper (node:events:646:26)
      at ClientRequest.emit (node:events:526:28)
      at HTTPParser.parserOnIncomingClient (node:_http_client:618:27)
      at HTTPParser.parserOnHeadersComplete (node:_http_common:128:17)
      at Socket.socketOnData (node:_http_client:482:22)
      at Socket.emit (node:events:526:28)
      at addChunk (node:internal/streams/readable:315:12)
      at readableAddChunk (node:internal/streams/readable:289:9)
      at Socket.Readable.push (node:internal/streams/readable:228:10)
      at TCP.onStreamRead (node:internal/stream_base_commons:190:23),
  isOperational: true
}

When trying to call the url manually, for example http://cache4-fra1.steamcontent.com/depot/731/manifest/2494342422876109608/5 I get a 401 error. 
 

Did steam change something related to CDN, depots?

[Dr. McKay]

This is likely the same issue as this thread:

node-csgo-cdn likely needs to specify the branch name (public).

[wandermaus]

Thank you for your fast answer. This was the Issue.
But, why did it work for the couple last months?

[Dr. McKay]

Valve made a change on the server side.