Node.js net create server

var net=require('net'), people=[];
var s=net.createServer(function(socket){
  socket.write('welcome to the chat\n');

  people.push(socket);/*from   ww  w . ja v a  2  s .  c o  m*/
  socket.on('data',function(data){
    people.forEach(function(person){
      if (person!==socket && person.writable){
        person.write(person.remoteAddress+'>'+data);
      }
    });
  });
});
s.listen(8000);