code: @Override
    public ClientSocket openWarm()
    {
      State state = _state;
  
      if (! state.isEnabled()) {
        return null;
      }
      
      /*
      long now = CurrentTime.getCurrentTime();
      
      if (isFailed(now)) {
        return null;
      }
      */
  
      ClientSocket stream = openRecycle();
  
      if (stream != null) {
        return stream;
      }
  
      if (canOpenWarm()) {
        return connect();
      }
      else {
        return null;
      }
    }
docs: Open a stream to the target server, restricted by warmup.
  
  @return the socket's read/write pair.