Function answerHTTPValidation

httphandlers.go:265–292

(logger *zap.Logger, rw http.ResponseWriter, req *http.Request, valInfo acme.Challenge, distributed bool)

}

func answerHTTPValidation(logger *zap.Logger, rw http.ResponseWriter, req *http.Request, valInfo acme.Challenge, distributed bool) bool {
	// ensure URL matches
	validationURL, err := url.Parse(valInfo.URL)
	if err != nil {
		logger.Error("got invalid URL from CA",
			zap.String("file_validation_url", valInfo.URL),
			zap.Error(err))
		rw.WriteHeader(http.StatusInternalServerError)
		return true
	}
	if req.URL.Path != validationURL.Path {
		rw.WriteHeader(http.StatusNotFound)
		return true
	}

	rw.Header().Add("Content-Type", "text/plain")
	req.Close = true

	rw.Write([]byte(valInfo.Token))

	logger.Info("served HTTP validation credential",
		zap.String("validation_path", valInfo.URL),
		zap.String("challenge", "http-01"),
		zap.String("remote", req.RemoteAddr),
		zap.Bool("distributed", distributed))

	return true
}

const (
	acmeHTTPChallengeBasePath     = "/.well-known/acme-challenge"