Struct NetworkLayer 

pub struct NetworkLayer<T: TransportPort> { /* private fields */ }

Non-router BACnet network layer.

Wraps a TransportPort and provides APDU-level send/receive by handling NPDU framing. This layer does not act as a router (it does not forward messages between networks), but it can send to remote devices through local routers using NPDU destination addressing.

Implementations

impl<T: TransportPort + 'static> NetworkLayer<T>

pub fn new(transport: T) -> Self

Create a new network layer wrapping the given transport.

pub async fn start(&mut self) -> Result<Receiver<ReceivedApdu>, Error>

Start the network layer. Returns a receiver for incoming APDUs.

This starts the underlying transport and spawns a dispatch task that decodes incoming NPDUs and extracts APDUs.

pub async fn send_apdu( &self, apdu: &[u8], destination_mac: &[u8], expecting_reply: bool, priority: NetworkPriority, ) -> Result<(), Error>

Send an APDU to a specific local destination by MAC address.

pub async fn broadcast_apdu( &self, apdu: &[u8], expecting_reply: bool, priority: NetworkPriority, ) -> Result<(), Error>

Broadcast an APDU on the local network.

pub async fn broadcast_global_apdu( &self, apdu: &[u8], expecting_reply: bool, priority: NetworkPriority, ) -> Result<(), Error>

Broadcast an APDU globally (DNET=0xFFFF, hop_count=255).

Unlike broadcast_apdu() which only reaches the local subnet, this sets DNET=0xFFFF so routers will forward to all reachable networks.

pub async fn broadcast_to_network( &self, apdu: &[u8], dest_network: u16, expecting_reply: bool, priority: NetworkPriority, ) -> Result<(), Error>

Broadcast an APDU to a specific remote network via routers.

Like broadcast_global_apdu() but targets a single network number instead of all networks (DNET=0xFFFF).

pub async fn send_apdu_routed( &self, apdu: &[u8], dest_network: u16, dest_mac: &[u8], router_mac: &[u8], expecting_reply: bool, priority: NetworkPriority, ) -> Result<(), Error>

Send an APDU to a remote device through a local router.

The NPDU is sent via unicast to router_mac (the next-hop router on the local network), but the NPDU header addresses the final destination with dest_network / dest_mac.

pub fn transport(&self) -> &T

Access the underlying transport.

Useful for transport-specific operations like BBMD registration after the network layer has been started.

pub fn local_mac(&self) -> &[u8]

Get the transport’s local MAC address.

pub async fn stop(&mut self) -> Result<(), Error>

Stop the network layer and underlying transport.