PresenceTracker class

Client-side presence tracker

Tracks the online/offline status of contacts by subscribing to server-scoped GossipSub presence topics.

Constructors

PresenceTracker({required PubSub pubsub, required PeerId localPeerId, PresenceCache? cache})
PresenceTracker.withSubscriber(Subscription subscribe(String topic), {required PeerId localPeerId, PresenceCache? cache}): A tracker fed by subscribe instead of a live pubsub, for tests.

cache → PresenceCache: final
contactPresenceChanges → Stream<PresenceChange>: Stream of presence changes for tracked contacts
no setter
hashCode → int: The hash code for this object.
no setterinherited
localPeerId → PeerId: final
pubsub → PubSub?: final
rejectedMessages → int: Messages refused for not being the server's own.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
trackedContacts → Set<String>: Get all tracked contacts
no setter

dispose() → Future<void>: Stop all tracking and clean up
getPresence(PeerId contact) → PresenceStatus?: Get the current presence state of a contact (from cache)
getStats() → Map<String, dynamic>: Get tracker statistics
handleMessage(PeerId from, String serverStr, List<int> data) → void: Applies a presence message signed by from that arrived on the topic of the server serverStr.
isOnline(PeerId contact) → bool: Check if a contact is online
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
trackContact(PeerId contact, PeerId serverPeerId) → void: Start tracking a contact's presence
untrackContact(PeerId contact) → void: Stop tracking a contact's presence