client.js

var net = require('net');

var HOST = '127.0.0.1';
var PORT = 8080;

var client = new net.Socket();
client.connect(PORT, HOST, function() {
    console.log('CONNECTED TO: ' + HOST + ':' + PORT);

    // Write a message to the socket as soon as the client is connected,
    // the server will receive it as message from the client
    var json = {id: '17', data: 'marcos'};
    setInterval(function(){
      client.write(JSON.stringify(json) + '\r\n');
    }, 10);
});

// Add a 'data' event handler for the client socket
// data is what the server sent to this socket
client.on('data', function(data) {

    console.log('DATA: ' + data);
    console.log('\n');
    // Close the client socket completely
    //client.destroy();

});

// Add a 'close' event handler for the client socket
client.on('close', function() {
    console.log('Connection closed');
});

server.js

var net = require('net');
var buffertools = require('buffertools').extend();
// Definindo variaveis de conexão
var HOST = 'localhost';
var PORT = 8080;

//criando server
var server = net.createServer();

//ouvindo conexão
server.listen(PORT, HOST);

var count = 0;
var delimitter = new Buffer('\r\n');

server.on('connection', function(socket){
  //logged connection
  count++;
  console.log(count);
  console.log('New connection recived from: '+ socket.remoteAddress +':'+ socket.remotePort);

  socket.write('Welcome!\n');
  var buffer = new Buffer(0);
  socket.on('data', function(data){
    //console.log(data);
    //data = new Buffer(data, 'utf-8');
    buffer = buffer.concat(buffer, data);

    if(buffer.indexOf(delimitter) === -1){
      //console.log('invalid');
      socket.write('invalid data!\n');
      return;
    }

    var json = [];
    var loop = function(){
      if(buffer.indexOf(delimitter) === -1)
        return;

      json.push(buffer.slice(0, buffer.indexOf(delimitter)));
      buffer = buffer.slice(buffer.indexOf(delimitter) +1);
      loop();
    };

    loop();

    json.forEach(function(jdata){
      jsonParser(socket, jdata);
    });

    /*data = JSON.parse(data);
    console.log('DATA RECIVED: '+data);
    console.log(data.id);*/
  });

  socket.on('close', function(data){
    console.log('CONN CLOSE: '+data);
  });

  socket.on('error', function(err){
    console.log('CRASHED: '+err);
  });

  socket.on('end', function(){
    console.log('CONN END');
  });
});

var jsonParser = function(socket, json){
  //data = JSON.parse(json);
  //console.log(json.toString());
  socket.write('recived by id: ' + json +'\n');
};