Hi there, I noticed that the SDK sends the request to the

/sub/sdk-*

endpoint and the server returns a 401 error:

{
  "status": 401,
  "message": "No authorization token was found"
}

The SDK was initialized with

backgroundSync: true

setting. Now we can do a release without this option, but can you help sort out the problem please? SDK: 1.0.62

apiHost: apiHost, // we use CloudFlare CDN, but see the same error with GB's CDN
clientKey: clientKey,
encryptionKey: nil,
attributes: attributes,
trackingCallback: { experiment, result in
    trackingCallback?(experiment.key, result.variationId)
},
refreshHandler: nil,
backgroundSync: true,
remoteEval: false

Hi @late-ambulance-66508. Let us check that and we will write you.

Hi @calm-dog-24239. Yes, the error still persists. I'm using 1.0.62 sdk version.

Could you please try to update to the latest 1.0.71?

Will check later, now we made a release with this option turned off.

Please let us know if it will help.

Hi @calm-dog-24239 @future-teacher-7046 helped me to find missing option for JS SDK, but it's not supported in Swift.

As for streaming, the Javascript SDK has a

streamingHost

option that you could point directly to

<https://cdn.growthbook.io>

, but unfortunately, it looks like our Swift and Kotlin SDKs do not support this right now. I can put in a feature request there for you. In the meantime, if you want to use your own CDN, you will need to disable streaming in the SDK.

Here are the details: https://github.com/growthbook/growthbook/pull/3966#issuecomment-2842042940

Hi @late-ambulance-66508. Do you want to have this option to Kotlin and Swift SDK's? We can also start working on implementing that to these SDK's if we need to have that.

It's not necessary for my product right now, but might be a good option to have later.

Ok, thank you. We will keep that in mind.