notifyActivity method
Notifies that activity has occurred on this transport connection, potentially due to activity on a multiplexed stream over it. This can be used by multiplexers to inform the connection manager.
Implementation
@override
void notifyActivity() {
// If using the legacy ConnManager, notify it.
// This assumes _legacyConnManager is the correct one to notify for activity tracking.
// If a different ConnManager instance is responsible for the idle timeout of this
// specific TCPConnection (e.g., one from a higher layer like Swarm or BasicHost),
// then that's the one that should be called.
// For now, using _legacyConnManager if available.
if (!_closed && _legacyConnManager != null) {
_legacyConnManager!.recordActivity(this);
}
}