code: private void connected(final MemcachedNode node) {
      assert node.getChannel().isConnected() : "Not connected.";
      int rt = node.getReconnectCount();
      node.connected();
  
      for (ConnectionObserver observer : connObservers) {
        observer.connectionEstablished(node.getSocketAddress(), rt);
      }
    }
docs: Indicate a successful connect to the given node.
  
  @param node the node which was successfully connected.