Struct Delivery 

pub struct Delivery { /* private fields */ }

The broker’s acknowledgment of one published message, still to come.

A message published at QoS 1 is settled by the broker’s PUBACK, and one at QoS 2 by its PUBCOMP, the last step of the exchange that delivers it exactly once (OASIS MQTT 3.1.1, sections 4.3.2 and 4.3.3). MQTT acknowledges nothing at QoS 0, so such a message is settled once the connection has taken it.

Implementations

impl Delivery

pub async fn confirmed(self) -> Result<()>

Waits for the broker to acknowledge the message.

Returns

Ok(()) once the broker holds the message.

Errors

Returns Error::Transport if the connection ended before the acknowledgment arrived, or Error::Closed if the transport was disconnected first. Either way the message may or may not have reached the broker.

Trait Implementations

impl Debug for Delivery

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.