gistfile1.txt

var net = require('net');

var server = net.createServer(function (client) {
    var addr = client.server.address();
    client.write(JSON.stringify(addr, null, '\t'));
    client.end();
});

server.listen(1234, function () {
    var addr = server.address();
    console.log('listening on port: ' + addr.port);
});
server.listen(4321, function () {
    var addr = server.address();
    console.log('listening on port: ' + addr.port);
});