~ → cat testConnection.js

var net = require('net');
var url = require('url');

// edit this (password)
var conString = 'tcp://crypton_test_user:crypton_test_user_password@localhost:5432/crypton_test'; // default

var config = parse(conString);
console.log(config);
var stream = new net.Stream();

stream.on('connect', function () {
  console.log('connected', arguments);
});
stream.on('data', function () {
  console.log('data', arguments);
});
stream.on('error', function () {
  console.log('error', arguments);
});
stream.on('end', function () {
  console.log('end', arguments);
});

stream.connect(config.port, config.host);

// Below is code from the node-postgres module

function parse (str) {
  //unix socket
  if(str.charAt(0) === '/') {
    return { host: str };
  }
  // url parse expects spaces encoded as %20
  str = encodeURI(str);
  var result = url.parse(str);
  var config = {};
  config.host = result.hostname;
  config.database = result.pathname ? result.pathname.slice(1) : null;
  var auth = (result.auth || ':').split(':');
  config.user = auth[0];
  config.password = auth[1];
  config.port = result.port;
  return config;
};


~ → node testConnection.js

{ host: 'localhost',
  database: 'crypton_test',
  user: 'crypton_test_user',
  password: 'crypton_test_user_password',
  port: '5432' }
connected {}
^C%