Async ResourceRetriever

[Vidyabhushan Mohan]

I’ve have been using your library in our back-end services and it works great so far. Do you have any plans to support an async implementation to retrieve JWKSet from remote urls? Currently, we are using the synchronous implementation in our java and scala back-ends, but we would prefer to use an async implementation

If not, can you provide some guidance on how to structure the implementation (for example, which class to implement)? If the async implementation works well internally, I can submit a PR (a well-tested one) to this project.

Thanks!

[Yavor Vasilev]

At present there is a rather substantial PR in the works to refactor the JWK set retrieval, but it doesn’t seem to have async download support:

https://bitbucket.org/connect2id/nimbus-jose-jwt/pull-requests/92

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