Unsolved socket.on in plugin frontend, socket.emit in plugin backend

[noob111]

It's pretty common to emit from frontend and use socket.on to receive it in backend.
However, I want to make socket.emit from plugin backend and receive it using socket.on in frontend side of plugin, instead of receiving data via callback.

Is there an example plugin for this?
Thanks.

[Antosik]

@noob111

nodebb-plugin-poll

• server - https://github.com/NodeBB/nodebb-plugin-poll/blob/master/lib/sockets.js#L87
• client - https://github.com/NodeBB/nodebb-plugin-poll/blob/master/public/js/poll/sockets.js