rooms in socket io

Cruel Chamois answered on October 16, 2020 Popularity 10/10 Helpfulness 3/10

answer rooms in socket io

rooms in socket io

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io.on('connection', socket => {
  socket.join('some room');
});
//And then simply use to or in (they are the same) when broadcasting or emitting:

io.to('some room').emit('some event');
//You can emit to several rooms at the same time:

io.to('room1').to('room2').to('room3').emit('some event');
//In that case, an union is performed: every socket that is at least in one of the rooms will get the event once (even if the socket is in two or more rooms).
//You can also broadcast to a room from a given socket:

io.on('connection', function(socket){
  socket.to('some room').emit('some event');
});

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Contributed on Oct 16 2020

Cruel Chamois

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rooms in socket io

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