POST-as-GET

[WouterTinus]

According to

• https://tools.ietf.org/html/rfc8555
• https://community.letsencrypt.org/t/acme-v2-scheduled-deprecation-of-unauthenticated-resource-gets/74380

It's added as an optional feature enabled by a new boolean parameter to the constructor of the AcmeProtocolClient. As far as I could tell the new rules only needed to be applied to the following three functions:

• GetOrderDetailsAsync
• GetAuthorizationDetailsAsync
• GetChallengeDetailsAsync
• GetAsync

Tested against win-acme 2.0.10 and added some unit tests.

[ebekker]

I think I might be missing something, I think that the "bootstrap" to get initial nonce is prevented here, but I'm going to merge these in and see how the unit tests behave and then take it from there.

Thanks for the PR!

[WouterTinus]

You're welcome. The initial bootstrap is done by a HEAD request so no problems there :)