how file server plugin\engine communicate asynchronously

Hi,

As subjuect mentioned, I got several questions here:

1. How CFsPlugin.DoRequest() and CFsPluginConn.DoRequest() work together, are they run in one thread(the plugin thread) synchronously, or what else?

2. How to use RPlugin::DoRequest() to communicate with the CFsPluginConn.

What I want to do is, passing message, that intercepted by CFsPlugin, to my engine(application), via CFsPluginConn asynchronously.

Could anybody suggest me something?

Thank you very much.

Regards
zhou