Got too many requests.
        Send back a (precompiled) XMLRPC response saying as much

def overloaded(self, client_address):
        """
        Got too many requests.
        Send back a (precompiled) XMLRPC response saying as much
        """
        body = {
            'status': False,
            'indexing': False,
            'lastblock': -1,
            'error': 'overloaded',
            'http_status': 429
        }
        body_str = json.dumps(body)

        resp = 'HTTP/1.0 200 OK\r\nServer: BaseHTTP/0.3 Python/2.7.14+\r\nContent-type: text/xml\r\nContent-length: {}\r\n\r\n'.format(len(body_str))
        resp += '<methodResponse><params><param><value><string>{}</string></value></param></params></methodResponse>'.format(body_str)
        return resp