chat_socket.js

// server
var net = require("net")
	, server
;

server = net.createServer(function(socket){
	// socket.end("bye\n");
	
	socket.on("connect", function(){
		console.log("conectou\n");
	});
	
	socket.on("data", function(buffer){
		console.log(buffer.toString());
	});
	
});

server.listen("3000");

//////////////////////////////////////////////////////////////
// client
var net = require("net")
  , socket
;

// console.log(process.argv);

socket = new net.Socket();
socket.connect("3000", "127.0.0.1", function(){
	console.log("connecting\n");
	
});
// socket.end("disconnecting\n");

// socket.on("data", function(buffer){
// 	console.log(buffer.toString());
// });

process.stdin.resume();
process.stdin.setEncoding('utf8');

process.stdin.on('data', function (message) {
  // process.stdout.write('data: ' + chunk);
	socket.write(message);
});

// process.stdin.on('end', function () {
//   process.stdout.write('end');
// });