Joining socket room from instance that doesn't have the socket in memory.

[jreeter]

We have a multi process socket service that is backed by a message based queue, so I can't guarantee which socket instance gets the messages. Naturally, socket.io-redis is what I am needing so I can perform emits across any instance so it can reach the client. This part works. What I am having problems with is telling socket clients to join or leave rooms across instances, is this possible?

seneca.add({role:'sockets', cmd:'leaveRoom', accountId:'*', podId:'*'}, function(args, done) {
        return seneca.actAsync({role: 'session', cmd: 'read', key: args.accountId})
        .then((session) => {
            if(session && session.socketId) {

                // I need to tell the socket with id session.socketId to leave a certain room
            }
        })
        .catch(seneca.log.error)
        .finally(() => {
            done();
        });
    });

[jreeter]

+1 bump

[darrachequesne]

Hi! You may be able to catch the messages sent from the underlying adapter by overriding the Socket#packet method here: https://github.com/socketio/socket.io/blob/master/lib/socket.js#L218

See https://github.com/socketio/socket.io-adapter/blob/master/index.js#L132

[infnada]

Could this help? I'm still searching a "community" solution for this case:

socketio/socket.io#2458