Struct StateListener 

pub struct StateListener { /* private fields */ }

Available on crate feature client only.

A listener for state changes.

Constructed through Handle::on_state_change.

Implementations

impl StateListener

pub fn state(&self) -> State

Get the most recently observed state.

pub async fn changed(&mut self) -> Option<State>

Wait for the state to change and return the new state.

Returns None if the Service driving the connection is gone.

pub async fn wait_until(&mut self, state: State) -> bool

Wait until the observed state is state.

Returns false if the Service driving the connection is gone before the state could be observed.

Trait Implementations

impl Clone for StateListener

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateListener

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

Formats the value using the given formatter.