问向所有连接的客户端socket.io发送消息

EN

socket.emit('message', "this is a test");

io.emit('message', "this is a test");

socket.broadcast.emit('message', "this is a test");

socket.broadcast.to('game').emit('message', 'nice game');

io.in('game').emit('message', 'cool game');

socket.to('game').emit('message', 'enjoy the game');

io.of('myNamespace').emit('message', 'gg');

socket.broadcast.to(socketid).emit('message', 'for your eyes only');