code: def validate_redirect_uri(value):
      
      sch, netloc, path, par, query, fra = urlparse(value)
      if not (sch and netloc):
          raise InvalidRedirectURIError()
      if sch != 'https':
          if ':' in netloc:
              netloc, port = netloc.split(':', 1)
          if not (netloc in ('localhost', '127.0.0.1') and sch == 'http'):
              raise InsecureTransportError()
docs: Validate a redirect URI.
  
      Redirect URIs must be a valid URL and use https unless the host is
      localhost for which http is accepted.
  
      :param value: The redirect URI.