Why do you say you don't need a redirect_uri? That's probably ... • Aaron Parecki

Darryl Young https://twitter.com/darryl_young • Nov 6
Hi, Aaron. Thanks for the link to your great article. Unfortunately, for me, I still can't get past the "invalid_grant" issue. I'm doing this for an Expo (React Native) app so things are slightly different in that I don't need redirect_url, etc. but generally it's the same. Hmm.

Why do you say you don't need a redirect_uri? That's probably the problem if you're not including it.

Malmö, Skåne län • 41°F

Wed, Nov 6, 2019 3:35pm +01:00

4 replies
Have you written a response to this? Let me know the URL:
- Aaron Parecki twitter.com/aaronpk
  
  Make sure to include exactly the claims in their docs. I was finding some JWT libraries would add their own stuff into it or change things around slightly. Probably easiest to verify by base64 decoding the claims after you generate it.
  
  Wed, Nov 6, 2019 3:22pm +00:00 (via brid-gy.appspot.com)
- Darryl Young twitter.com/darryl_young
  
  Good idea. I'll give that a go. Based on the Apple docs, it requires the JWT to be created "using the Elliptic Curve Digital Signature Algorithm (ECDSA) with the P-256 curve and the SHA-256 hash algorithm", which I'm doing with the `jsonwebtoken` library. developer.apple.com/documentation/…
  
  Wed, Nov 6, 2019 3:15pm +00:00 (via brid-gy.appspot.com)
- Aaron Parecki twitter.com/aaronpk
  
  Huh I missed that in their docs. My next guess is your client secret JWT isn't being generated properly. Try generating it with the Ruby code in my post, it's very picky.
  
  Wed, Nov 6, 2019 3:02pm +00:00 (via brid-gy.appspot.com)
- Darryl Young twitter.com/darryl_young
  
  As I'm also using Expo, I followed the following to start with and there was no redirect_uri used. medium.com/appandflow/eli… I tried with one and it didn't make a difference. Also, in Apple's documentation, it doesn't show redirect_uri as being required. developer.apple.com/documentation/…
  
  Wed, Nov 6, 2019 2:57pm +00:00 (via brid-gy.appspot.com)

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