upstream

var (
	// ErrURLRequired is returned if the given URL to New is not given.
	ErrURLRequired = errors.New("the URL is required")

	// ErrURLMustContainScheme is returned if the given URL to New did not contain a scheme.
	ErrURLMustContainScheme = errors.New("the URL must contain scheme")

	// ErrInvalidURL is returned if the given hostName to New is not valid.
	ErrInvalidURL = errors.New("the URL is not valid")

	// ErrNotFound is returned if the nar or narinfo were not found.
	ErrNotFound = errors.New("not found")

	// ErrUnexpectedHTTPStatusCode is returned if the response has an unexpected status code.
	ErrUnexpectedHTTPStatusCode = errors.New("unexpected HTTP status code")

	// ErrSignatureValidationFailed is returned if the signature validation of the narinfo has failed.
	ErrSignatureValidationFailed = errors.New("signature validation has failed")

	// ErrTransportCastError is returned if it was not possible to cast http.DefaultTransport to *http.Transport.
	ErrTransportCastError = errors.New("unable to cast http.DefaultTransport to *http.Transport")
)