OPC_Client ========== OPC client examples include [utgard](http://openscada.org/projects/utgard/) and [jeasyopc](http://sourceforge.net/projects/jeasyopc/?source=navbar) Also for the real produce environment, there's two example for performance test.

Next Step

现在依然存在的问题

1. 发布订阅的实现 2. 异步的源码实现