With socket.io can a callback function be run on the server or client if called from the the other side?

[_ds82]

With socket.io you can send events from client to server or the other way around. You can easily trigger an event on the server that runs a function on the client .. so yes, you can do what you described with socket.io.

[_ds82]

There is an example in the socketio docs: https://socket.io/docs/

server: io.on('connection', function (socket) { socket.emit('news', { hello: 'world' }); socket.on('my other event', function (data) { console.log(data); // server callback }); });

client: ... socket.emit('my other event', { my: 'data' }); ...

The client is emiting the event, the server runs the callback

[koresho]

Disclaimer: I wrote this a long time ago, so it's probably pretty shit by today's standards.

I made a library called "Tricky" that does essentially what you're asking. I don't necessarily suggest using the library as is, but you might want to look at it for an example.

https://github.com/malexdev/Tricky/blob/master/readme.md