render_server.js

var argv = require('yargs')
	.option('p', {
		alias: 'port',
		description: 'Specify the server\'s port',
		default: 9009
    })
    .option('a', {
		alias: 'address',
		description: 'Specify the server\'s address',
		default: '127.0.0.1'
    })
    .help('h').alias('h', 'help')
    .strict()
    .argv;

var http = require('http');
var express = require('express');
var bodyParser = require('body-parser');
var reactRender = require('react-render');

// Ensure support for loading files that contain ES6+7 & JSX
require('babel-core/register');

var ADDRESS = argv.address;
var PORT = argv.port;

var app = express();
var server = http.Server(app);

app.use(bodyParser.json());

app.get('/', function(req, res) {
	res.end('React render server');
});

app.post('/render', function(req, res) {
	reactRender(req.body, function(err, markup) {
		if (err) {
			res.json({
				error: {
					type: err.constructor.name,
					message: err.message,
					stack: err.stack
				},
				markup: null
			});
		} else {
			res.json({
				error: null,
				markup: markup
			});
		}
	});
});

server.listen(PORT, ADDRESS, function() {
	console.log('React render server listening at http://' + ADDRESS + ':' + PORT);
});