This method should not be called on the main thread as it may lead to UI unresponsiveness.

[geoffroymorel]

Hello,

I am getting the following double warnings in the console leading to an unresponsive UI for a couple seconds.

Warning is triggered when calling SecTrustEvaluateWithError in checkChainOfTrust() function after calling receipt.validate().

I have found the following on stackoverflow.com:
https://stackoverflow.com/questions/73892668/sectrustevaluatewitherror-leads-to-ui-unresponsiveness

Xcode 15.2
iPhone 15 Pro Max iOS 17.3.1

[geoffroymorel]

The actual freeze was not related to this issue. But the warnings are still showing up.

[tikhop]

@geoffroymorel Thanks for bringing this up. You can validate your receipt in any thread you want.

Personally, I just call validate method from background thread and it works without the warning message:

let receipt = ...
DispatchQueue.global(qos: .background).async {
    do {
        try receipt.validate()
        DispatchQueue.main.async {
            // Go back to the main thread
        }
    } catch {
        // Catch the error
    }
}

I will think about adding an async validate method and move the validation logic out of the main thread at lib level.