Source: Apple forum thread

Pain

I’m trying to validate the code on a cloud function but I always get same result “invalid_client”. Bellow you have my NodeJs function with an example key:_

My idea is that the signing of the client_secret is wrong for some reason. Any help? (uncertainty)

(No one answered a correct solution)

Keywords

Cloud function NodeJS

Recommendation

What I can briefly note is that you are missing User-Agent header which is required by Apple. (this doesn’t solve the problem, incorrect recommendation)