Send event only to clients that are in a combination of rooms with Socket.io

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Suppose I have a set of rooms of different sports ("football", "basketball", "tennis" ...) and a set of rooms of cities ("paris", "london", "berlin" ...) in a Node.js app with Socket.IO

Is it possible to send and event only to those from London interested in football? Something like:

io.sockets.in('london').in('football').emit('event_name', data);

Or is it bad design?

Thanks in advance.

asked 1 min ago

B.K.

29