Running multiple Node (Express) applications on the same port

Question

I have several Node applications (build on Express).

Now I put them like this:

• /var/www/app1
• /var/www/app2
• /var/www/app3

Now I want to run these 3 applications on the same port (say, 8080). Is it possible?

It should be noted that each application has such common routes as these -

• app.get('/', func...);
• app.get('/about', func...);
• app.post('/foo', func...);
• app.post('/bar', func...);

I basically want to do this, as you can do with installing Apache / PHP.

So, when you have the LAMP stack,

• /var/www/app1
• /var/www/app2
• /var/www/app3

You can easily access them in the form of different applications -

• localhost/app1
• localhost/app2
• localhost/app3

Answer 1

You can use app.use() :

 app .use('/app1', require('./app1/index').app) .use('/app2', require('./app2/index').app) .listen(8080); 

Answer 2

You can run them as separate applications, listening to different ports, and then have a proxy (for example, https://github.com/nodejitsu/node-http-proxy/ ) serving everything on 8080 depending on the requested URL.

as:

 var options = { router: { 'foo.com/baz': '127.0.0.1:8001', 'foo.com/buz': '127.0.0.1:8002', 'bar.com/buz': '127.0.0.1:8003' } }; 

Works like a charm for me ( http://nerdpress.org/2012/04/20/hosting-multiple-express-node-js-apps-on-port-80/ ). I was not so keen on installing them as sub-applications, as suggested in the comments, because I wanted them to run independently ...

Answer 3

You can create one main application (for example, an application) in parallel with your applications and initialize secondary applications (in your case app1, app2, app3) using app.use ('', require ('./app1/yourApp.js') .

All your applications (app1, app2, app3) should create an application and export it using var app = module.exports = express (); You do not need to create a server instance or call app.listen in all subapps; all sub-applications can be served through the main application listening port.