tcp with node.js

var net = require('net');

var server = net.createServer();

var sockets = [];

//接受连接
server.on('connection', function(socket){
  console.log('got a new connection');
  
  //聚合所有客户端信息
  sockets.push(socket);
  
  //监听所有客户端信息，并进行广播
  socket.on('data', function(data){
    console.log('got data:',data);
    sockets.forEach(function(otherSocket){
      if(otherSocket != socket){
        otherSocket.write(data);
      }
    });
  });
  
  socket.on('close', (){
    console.log('connection closed');
    var index = sockets.indexOf(socket);
    sockets.splice(index, 1);
  });
});

server.on('error', function(err) {
  console.log('Server error:', err.message);
});

server.on('close', () {
  console.log('Server closed');
});

server.listen(4001);

nc localhost XXXX(你选择的端口号)