node.js: route request to different port on same host

Question

I have a host computer which serves a number of webapplications (not node.js based). It does this using different ports. This means that for example the following applicatio

Answer 1

You probably better use Nginx setting up a reverse proxy with different locations per application.

It's not what you ask for because it does not use node.js, but if it's the only purpose, Nginx really suits your needs.

For example a Nginx configuration file like should work the way you want :

server {
    listen 80;

    server_name myapp.com;

    location /app1 {
        proxy_pass http://APP_PRIVATE_IP_ADDRESS:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    } 

    location /app2 {
        proxy_pass http://APP_PRIVATE_IP_ADDRESS:3001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    } 

    location /app3 {
        proxy_pass http://APP_PRIVATE_IP_ADDRESS:3003;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    } 
}