Method select_downlink_gateway

chirpstack/src/downlink/data.rs:350–373

(&mut self, class_a: bool)

    }

    fn select_downlink_gateway(&mut self, class_a: bool) -> Result<()> {
        trace!("Selecting downlink gateway");

        // Not needed when roaming.
        if self._is_roaming() {
            self.downlink_gateway = Some(Default::default());
            return Ok(());
        }

        let ds = self.device.get_device_session()?;

        let gw_down = helpers::select_downlink_gateway(
            Some(self.tenant.id.into()),
            &ds.region_config_id,
            self.network_conf.gateway_prefer_min_margin,
            &ds.gateway_rx_info_history,
            class_a,
        )?;

        self.downlink_frame.gateway_id = hex::encode(&gw_down.gateway_id);
        self.downlink_gateway = Some(gw_down);

        Ok(())
    }

    fn set_tx_info(&mut self) -> Result<()> {
        let mut prefer_rx2_over_rx1 = self._prefer_rx2_dr()?;