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kotlinlang

Hi, I just managed to deploy my ktor-server-app to heroku. After a lot of struggle it finally worked :upside_down_face:. One thing however is not working.
I hope somebody can help. I use jwt for authorization. I followed exactly this guide <https://ktor.io/docs/jwt.html> using RS256 (public/private) key pair.
Everything worked on localhost but on Heroku public key cannot be found. (More in Thread)

On localhost this configuration worked just fine:

jwt {
    privateKey = "PrivateKey"
    issuer = "<http://0.0.0.0:8080/>"
    audience = "<http://0.0.0.0:8080/hello>"
    realm = "Access to 'hello'"
}

But on Heroku I get the following error:

com.auth0.jwk.SigningKeyNotFoundException: Failed to get key with kid 346899ed-9189-488f-9011-0ff4b6c08xyz
Caused by: java.util.concurrent.ExecutionException: com.auth0.jwk.NetworkException: Cannot obtain jwks from url <https://myherokudomain/.well-known/jwks.json>

What do I have to use for issuer? Anyone?

You can use Heroku’s <https://devcenter.heroku.com/articles/config-vars|config variables> if you know your application’s domain before deployment to reference them in a Ktor application config.