Struct CoapPublisher 

pub struct CoapPublisher { /* private fields */ }

A handle that sets the state of a server’s resources from anywhere, while another task waits on the server’s recv.

A gateway that takes readings in one loop and sends commands from another holds one of these for the commands, since a receive holds the server itself.

Implementations

impl CoapPublisher

pub async fn publish(&self, path: &str, payload: &[u8]) -> Result<()>

Sets the state of a resource and notifies every observer of it.

Arguments

• path - the resource’s path.
• payload - its new state, which a GET now reads.

Returns

Ok(()) once each observer’s notification has left. An observer that has gone does not stop the others’ notifications.

Errors

Returns [Error::Closed] if the server is not connected, or [Error::Transport] if the socket failed for a reason other than an observer that has gone.

pub fn observers(&self, path: &str) -> usize

Counts the clients observing a resource.

Arguments

• path - the resource’s path.

Returns

How many observers the resource has.

pub fn is_connected(&self) -> bool

Reports whether the server holds a bound socket.

Returns

true while the server is connected.

pub fn local_addr(&self) -> Option<SocketAddr>

The address the server listens on.

Returns

The local address, or None while the server is not connected.

Trait Implementations

impl Clone for CoapPublisher

fn clone(&self) -> CoapPublisher

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.