How to limit the maximum number of connections ?

[pigochu]

I want to implement a proxy program.

A = evio
B = backend service

The client will connect to A , and A read data from B then out data to A

If B's max connections is 10. and clients is more than 10
In event.Opened , I use time.Sleep to wait B finish the work , but evio looks like blocked.

So how do I implement it ? or any options can set max connections and backlog ?

[cheng-zhongliang]

When Open event on, return CLOSE action.