kelunik/acme is a non-blocking implementation of the ACME protocol based on the amp concurrency framework.
Note: If you're looking for a PHP client, have a look at https://github.com/kelunik/acme-client which is based on this library.
Required PHP Version
- PHP 5.5
Installation
composer require kelunik/acmeUsage
To interact with this library, you mainly have to use Kelunik\Acme\AcmeService and pass a Kelunik\Acme\AcmeAdapter object. There's an implementation for amphp/aerys which you can look at: kelunik/aerys-acme.
If you're not familiar with promises and amp yet, read the blog post to get started. You can always use Amp\wait to simply use async libraries in a blocking world.