index.js

var express = require('express');
var httpProxy = require('http-proxy');
var bodyParser = require('body-parser');

var apiForwardingUrl = 'https://api.coursera.org';

var proxyOptions = {
    changeOrigin: true
};

httpProxy.prototype.onError = function (err) {
    console.log(err);
};

var apiProxy = httpProxy.createProxyServer(proxyOptions);

console.log('Forwarding API requests to ' + apiForwardingUrl);

// Node express server setup.
var server = express();
server.set('port', (process.env.PORT || 3000));
server.use(express.static(__dirname ));

server.all("/api/*", function(req, res) {
    apiProxy.web(req, res, {target: apiForwardingUrl});
});

server.use(bodyParser.json());
server.use(bodyParser.urlencoded({
    extended: true
}));

// Start Server.
server.listen(server.get('port'), function() {
    console.log('Express server listening on port ' + server.get('port'));
});