code: @Override
    public ClientSocket open()
    {
      State state = _state;
      
      if (! state.isInit())
        return null;
  
      ClientSocket stream = openRecycle();
  
      if (stream != null)
        return stream;
  
      return connect();
    }
docs: Open a stream to the target server for the load balancer.
  
  @return the socket's read/write pair.