sending to sender-client only socket.emit('message', "this is a test"); sending to all clients, include sender io.emit('message', "this is a test"); sending to all clients except sender socket.broadcast.emit('message', "this is a test"); sending to all clients in 'game' room(channel) except sender socket.broadcast.to('game').emit('message', 'nice game'); sending to all clients in 'game' room(channel), include sender io.in('game').emit('message', 'cool game'); sending to sender client, only if they are in 'game' room(channel) socket.to('game').emit('message', 'enjoy the game'); sending to all clients in namespace 'myNamespace', include sender io.of('myNamespace').emit('message', 'gg'); sending to individual socketid socket.broadcast.to(socketid).emit('message', 'for your eyes only'); Reference
