A module to make sure selenium is already started

selenium_server.js

var http    = require('http'),
    spawn   = require('child_process').spawn,
    selenium;

var selenium_server = {
  host: 'localhost',
  port: 4444,
  path: '/wd/hub/static/resource/hub.html',
  method: 'GET'
};

exports.start = function(cb){
  http.get(selenium_server, function(res) {
    console.log("Selenium already running");
    cb();
  }).on('error', function(e) {
    start_selenium(cb);
  });
}

var start_selenium = function(cb){
  console.log("Starting Selenium");
  selenium  = spawn('java', ['-jar', 'spec/support/selenium-server-standalone-2.20.0.jar']);

  selenium.stdout.on('data', function(data){
    data = data.toString();
    if(!data.match(/INFO/)) console.log(data);
  });

  selenium.stderr.on('data', function(data){
    data = data.toString(); 
    if(data.match(/org\.openqa\.jetty\.util\.Container - Started org\.openqa\.jetty\.jetty\.Server@/)){
      console.log("Selenium server started");
      cb();
    }
  });
}

exports.stop = function(){
  if(selenium !== undefined) selenium.kill();
}