def HandleServerHandshake(self):
    if not self.MASTER:
      self._EmptyResponse(constants.RESPONSE_NOT_MASTER_SERVER)
      return
    self.HandleHandshake()
End-to-end test for records reader.
dataset/ETHPy150Open google/grr/grr/server/data_server/data_server.py/DataServerHandler.HandleServerHandshake--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/appengine-mapreduce/python/test/mapreduce/end_to_end_test.py/EndToEndTest.testRecordsReader