def setup_remote_stubs(self, connection):
        if self.active_stubs == 'remote':
            return
        if not connection.remote_api_path:
            from djangoappengine.utils import appconfig
            from google.appengine.api import appinfo
            default_module = next(m for m in appconfig.modules if m.module_name == appinfo.DEFAULT_MODULE)
            for handler in default_module.handlers:
                if handler.script in REMOTE_API_SCRIPTS:
                    connection.remote_api_path = handler.url.split('(', 1)[0]
                    break
        server = '%s.%s' % (connection.remote_app_id, connection.domain)
        remote_url = 'https://%s%s' % (server, connection.remote_api_path)
        logging.info("Setting up remote_api for '%s' at %s." %
                     (connection.remote_app_id, remote_url))
        if not have_appserver:
            logging.info(
                "Connecting to remote_api handler.\n\n"
                "IMPORTANT: Check your login method settings in the "
                "App Engine Dashboard if you have problems logging in. "
                "Login is only supported for Google Accounts.")
        from google.appengine.ext.remote_api import remote_api_stub
        remote_api_stub.ConfigureRemoteApi(None,
            connection.remote_api_path, auth_func, servername=server,
            secure=connection.secure_remote_api,
            rpc_server_factory=rpc_server_factory)
        retry_delay = 1
        while retry_delay <= 16:
            try:
                remote_api_stub.MaybeInvokeAuthentication()
            except __HOLE__, e:
                if not have_appserver:
                    logging.info("Retrying in %d seconds..." % retry_delay)
                time.sleep(retry_delay)
                retry_delay *= 2
            else:
                break
        else:
            try:
                remote_api_stub.MaybeInvokeAuthentication()
            except HTTPError, e:
                raise URLError("%s\n"
                               "Couldn't reach remote_api handler at %s.\n"
                               "Make sure you've deployed your project and "
                               "installed a remote_api handler in app.yaml. "
                               "Note that login is only supported for "
                               "Google Accounts. Make sure you've configured "
                               "the correct authentication method in the "
                               "App Engine Dashboard." % (e, remote_url))
        logging.info("Now using the remote datastore for '%s' at %s." %
                     (connection.remote_app_id, remote_url))
        self.active_stubs = 'remote'
dataset/ETHPy150Open django-nonrel/djangoappengine/djangoappengine/db/stubs.py/StubManager.setup_remote_stubs