Struct SubscriptionStateMachine 

pub struct SubscriptionStateMachine {
    state: SubscriptionState,
}

Pure state machine for a MoQT subscription (draft-10). Transitions: Idle → Subscribing → Active → Done.

Fields

state: SubscriptionState

Implementations

impl SubscriptionStateMachine

pub fn new() -> Self

Creates a new state machine in the SubscriptionState::Idle state.

pub fn state(&self) -> SubscriptionState

Returns the current state of the subscription.

pub fn on_subscribe_sent(&mut self) -> Result<(), SubscriptionError>

Idle → Subscribing (SUBSCRIBE sent).

pub fn on_subscribe_ok(&mut self) -> Result<(), SubscriptionError>

Subscribing → Active (SUBSCRIBE_OK received).

pub fn on_subscribe_error(&mut self) -> Result<(), SubscriptionError>

Subscribing → Done (SUBSCRIBE_ERROR received).

pub fn on_unsubscribe(&mut self) -> Result<(), SubscriptionError>

Active → Done (UNSUBSCRIBE sent).

pub fn on_subscribe_update(&mut self) -> Result<(), SubscriptionError>

Active → Active (SUBSCRIBE_UPDATE sent/received — self-transition).

pub fn on_subscribe_done(&mut self) -> Result<(), SubscriptionError>

Active → Done (SUBSCRIBE_DONE received — publisher finished).

Trait Implementations

impl Default for SubscriptionStateMachine

fn default() -> Self

Returns the “default value” for a type.