Client error when shop runs into Cloudflare queue

[ocastx]

What area is the issue related to?

Checkout Sheet Kit

What version of Checkout Sheet Kit are you using?

3.4.0

Reproducible sample code

No response

Steps to Reproduce

Use a shop that is currently rate limited by Cloudflare (sorry, not so easy to reproduce)

1. Add random item to cart
2. Without preloading, open checkout using .present()

Expected Behavior

Either checkout is opened without Cloudflare challenge, or user gets the option to solve challenge and proceed to checkout.

Actual Behavior

CSK returns clientError, most likely due to the HTTP code being 429 and the response being a Cloudflare challenge

checkout-sheet-kit-swift/Sources/ShopifyCheckoutSheetKit/CheckoutError.swift

Line 63 in 920dff1

case checkoutUnavailable(message: String, code: CheckoutUnavailable, recoverable: Bool)

Screenshots/Videos/Log output

No response

Storefront domain

redacted

This seems to be happening at the moment due to the ongoing Cloudflare outage: https://www.cloudflarestatus.com/ The issue persists, though only on specific stores that seem to have reached the rate limit.

[ocastx]

Update: It turns out that the merchant had faulty DNS settings in combination with Fastly leading to Cloudflare applying a rate limit on their store. This should not appear on a standard merchant store, if set up correctly.

Still, it would be great if in these cases customers are able to complete the Cloudflare challenge posed. Right now, Checkout Kit denies checking out at all. Let me know what you think!