recordActivity method
Records activity on a connection
Implementation
void recordActivity(TransportConn connection) {
if (!_connections.containsKey(connection)) {
throw StateError('Connection not registered with manager');
}
_updateActivityTimestamp(connection);
// If connection was idle or ready, mark it as active
final state = _connections[connection];
if (state == ConnectionState.idle || state == ConnectionState.ready) {
updateState(connection, ConnectionState.active);
}
}