Socket#emit

Socket#emit(name:String[, …]):Socket

Emits an event to the socket identified by the string name. Any other parameters can be included.

All datastructures are supported, including Buffer. JavaScript functions can’t be serialized/deserialized.

var io = require('socket.io')();
io.on('connection', function(socket){
  socket.emit('an event', { some: 'data' });
});