AcceptTOS is a Manager.Prompt function that always returns true to indicate acceptance of the CA's Terms of Service during account registration.

HostWhitelist returns a policy where only the specified host names are allowed.

NewListener returns a net.Listener that listens on the standard TLS port (443) on all interfaces and returns *tls.Conn connections with LetsEncrypt certificates for the provided domain or domains.

ErrCacheMiss is returned when a certificate is not found in cache.

Manager is a stateful certificate manager built on top of acme.Client.

Cache is used by Manager to store and retrieve previously obtained certificates and other account data as opaque blobs.

DirCache implements Cache using a directory on the local filesystem.

HostPolicy specifies which host names the Manager is allowed to respond to.