window.location.href returning about:blank

I would like to get the page URL in my code. we usually do this by using window.location.href or document.URL not sure why this is not working in nodeJS. The requirement is to get the URL and do some manipulations on it. Please Advise.

import http from 'http';
import React, { PropTypes } from 'react';
const jsdom = require("jsdom");
const { JSDOM } = jsdom;
const { window } = new JSDOM(`...`);

import {
    StyleSheet,
    css,
} from 'aphrodite/no-important'; // Is very important to import no-important!
import RAMPT, {
    addScript, // Fancy way to append amp-scripts into document's head
    addMeta,
} from '../../lib'; // react-amp-template

// --- MODULAR-CSS ---
const style = StyleSheet.create({
    social: {padding: '10px'},
});

// --- REACT + CUSTOM-TAGS ---
const SampleApp = ({ value, location}) => {

    // --- CUSTOM-SCRIPTS ---
    addMeta([
        {type: 'meta', content: {content: 'something'}},
        {type: 'link', content: {rel: 'http://link'}},
    ]);
    const check = window.location.href;
    const prId = "12512" //We can make it dynamic
    const url = "http://localhost:8000/prId=" + prId; //window,location.href;
    const id = url.substring(url.lastIndexOf('/') + 1);
    const output = id.replace(/[a-zA-Z=]/g, '');

    return (
        <div>
            <h1>Hello {value}</h1>
            <hr />
            <h2>{output} took from prId</h2>
            <h2>{check} took from prId</h2>
            <hr />
            <h2><a className="redirect" href={'//www.fitchratings.com/prId/' + output} target="_blank">Click Here</a>
            </h2>
        </div>
    );
};


//AJAX CALL --GET THE ID AND MAKE THE AJAX REQUEST-- GET AJAX CALL



export const startServer = (html) => {
    http.createServer((request, response) => {
        response.writeHeader(200, {'Content-Type': 'text/html'});
        response.write(html);
        response.end();
    })
        .listen(8000)
        .on('clientError', (err, socket) => {
            socket.end('HTTP/1.1 400 Bad Request\r\n\r\n');
        });
    console.log('Listening on port 8000');
};


const rampt = new RAMPT({
    ampValidations: true, // (default) validate the template with AMP Google tool.
    template: {
        head: {
            title: 'react-amp-sample',
            canonical: 'http://sample',
        },
    },
})

/**
 * renderStatic returns a promise which will be fulfilled
 * with a string that holds the whole HTML document ready to serve.
 * The promise will reject for any internal error.
 * Once done rendering, the promise's result will be served on port 8000.
 */
rampt
    .renderStatic(<SampleApp value="AMP!"/>)
    .then(startServer)
    .catch(console.error);

via Ch Sai