Support for Unmount?

[miko]

Hello,
is it possible to implement Unmount()? Say you want to display the number of currently active users on the page, or you want to free some server resources after the last connection (socket) is closed.

[jfyne]

I've seen this, on holiday, I will get back to you soon

[miko]

Looking at the engine.go code, I would add disconnectHandler: func(sock Socket) to BaseEngine and HandleDisconnect(handler DisconnectHandler) to the Engine interface, and then call it within DeleteSocket().

[miko]

Thanks for merging in #63

[jfyne]

Tell me if you are able to do what you need with it