Outgoing port tester. Test outbound TCP port using portquiz.net. Useful to see which port is blocked by your network.

test.js

var
  exec = require('child_process').exec,
  current = 0,
  max = 100
;

function scan (i) {
  if (current < max) {
    current++;
    exec('curl portquiz.net:' + i, callback.bind(this, i));
  } else {
    setTimeout(scan.bind(this, i), 10);
  }
}

function callback (port, err, stdout, stderr) {
  current--;
  if (stdout) {
    console.log(port + ' is open');
  }
}

for (var i = 1, j = 65537; i < j; i++) {
  scan(i);
}

Requires CURL