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Implement optional POST-as-GET support #3871

cpu opened this Issue Sep 25, 2018 · 4 comments


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cpu commented Sep 25, 2018

The draft ACME protocol has removed unauthenticated GET requests to order, authorization, and challenge resources. Because this is not a backwards compatible change we're intending to roll out support gradually before removing support for GETs to these resources entirely.

We need to:

  • Update wfe2/verify.go with support for verifying POST-as-GET requests
  • Add optional support for POST-as-GET to orders
  • Add optional support for POST-as-GET to authorizations
  • Add optional support for POST-as-GET to challenges
  • Add optional support for POST-as-GET to order certificate URLs
  • Add optional support for POST-as-GET to accounts

On November 1st, 2019 we will remove support for GET requests to orders, authorizations and challenges making POST-as-GET mandatory. When we do this we'll need to take care that you can't access any V2 resources via the V1 endpoint.

Client developers that want a head-start testing their clients against this change are encouraged to use Pebble, which has already implemented the change for -strict mode.


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felixfontein commented Oct 6, 2018

I think this list is missing POST-as-GET for account resources (similar to letsencrypt/pebble#171).


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cpu commented Oct 9, 2018

@felixfontein Right as usual! Thanks! I updated the issue description.


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rmbolger commented Oct 11, 2018

Do I assume correctly that the account change from {} to POST-as-GET will also be mandatory on the Nov. 1st, 2019 cutoff? But until then, it will support both?


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cpu commented Oct 11, 2018

@rmbolger Yes, I think that makes the most sense.

@cpu cpu closed this in #3883 Oct 22, 2018

cpu added a commit that referenced this issue Oct 22, 2018

ACME v2: Optional POST-as-GET support. (#3883)
This allows POST-as-GET requests to Orders, Authorizations, Challenges, Certificates and Accounts. Legacy GET support remains for Orders, Authorizations, Challenges and Certificates. Legacy "POST {}" support for Accounts remains.

Resolves #3871
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