[Selenium][Phantomjs] How to use PhantomJS web driver server with NodeJS?

phantomjs_selenium_webdriver_server.js

/* 
Bring up the selenium webdriver server using below command 
phantomjs --proxy=104.131.57.228:8090 --proxy-type=http  --webdriver=8543 
The value in --webdriver is the port binded on wd server
*/

var webdriver = require('selenium-webdriver');

var browser = webdriver.Capabilities.phantomjs();
browser.set('phantomjs.page.settings.userAgent', "Mozilla");

var driver = new webdriver.Builder()
	        .usingServer('http://localhost:8543/wd/hub')
	        .withCapabilities(browser)
	        .build();

var url = "https://httpbin.org/ip";

driver.get(url).then(function(){ 
	driver.getPageSource()
    	.then(function(body){
    		console.log(body);
         });
    }
);