(PECL gupnp >= 0.1.0)
gupnp_service_action_return_error — Return error code
$action
   , int $error_code
   [, string $error_description
  ] )Return error code.
action
     A service action identifier.
error_code
     The error code. Signal can be one of the following values or user defined:
GUPNP_CONTROL_ERROR_INVALID_ACTION
         GUPNP_CONTROL_ERROR_INVALID_ARGS
         GUPNP_CONTROL_ERROR_OUT_OF_SYNC
         GUPNP_CONTROL_ERROR_ACTION_FAILED
         error_description
     The error description.
   成功时返回 TRUE, 或者在失败时返回 FALSE.