DiscoverACIEndpoints will make HTTPS requests to find the ac-discovery meta tags and optionally will use HTTP if insecure is set.

DiscoverPublicKey will make HTTPS requests to find the ac-public-keys meta tags and optionally will use HTTP if insecure is set.

DiscoverWalk will make HTTPS requests to find discovery meta tags and optionally will use HTTP if insecure is set.

NewAppFromString takes a command line app parameter and returns a map of labels.

Client is the default http.Client used for discovery requests.

FailedAttempt represents a failed discovery attempt.

DiscoverWalkFunc can stop a DiscoverWalk by returning non-nil error.