grpc_get_last_info_np - Returns the information on the last session that was run.
  grpc_error_t grpc_get_last_info_np(grpc_exec_info_t_np *info,
                                     int *status)
  grpc_exec_info_t_np *info  int *statusNot recommend. Use grpc_session_info_get_np() instead. The grpc_get_last_info_np() function returns the information on the last-executed session. If NULL is specified in info, only the status of the session is returned as the return value. See the manual of grpc_get_info_np() for details of info.
Refer to the following for return status.
 GRPC_SESSION_ARG_IS_NOT_TRANSMITTED  GRPC_SESSION_EXECUTING  GRPC_SESSION_DOWN  GRPC_SESSION_DONE  GRPC_SESSION_UNKNOWN_STATUS This function is MT-safe.
If successful, GRPC_NO_ERROR is returned. In the case of an error, Error code is returned.
  GRPC_NOT_INITIALIZED  GRPC_OTHER_ERROR_CODE