how to put nodejs and apache in the same port 80

I do this via node.js proxy..

Install http-proxy with npm or official page

Example:

var http = require('http'),httpProxy = require('http-proxy'),proxyServer = httpProxy.createServer ({    hostnameOnly: true,    router: {        'domain.com':       '127.0.0.1:81',        'domain.co.uk':     '127.0.0.1:82',        '127.0.0.1':        '127.0.0.1:83'    }});proxyServer.listen(80);

This creates a node process listening to port 80, and forwarding requests for domains which go to :81,82,83 etc. I recommend running this with forever and adding an entry to init.d so your proxy is up in case system shuts down.

You can also use Apache 2's mod_proxy and mod_proxy_http, which might be more reliable or perform better depending on your system.

Here's an example:

Firstly run below command to proxy to allow

sudo a2enmod proxysudo a2enmod proxy_httpsudo a2enmod proxy_balancersudo a2enmod proxy_balancersudo a2enmod lbmethod_byrequests# Use Apache for requests to http://example.com/# but use Node.js for requests to http://example.com/node/<VirtualHost *:80>    ServerName example.com    DocumentRoot /var/www/example/    <Location /node>        ProxyPass http://127.0.0.1:8124/        ProxyPassReverse http://127.0.0.1:8124/    </Location></VirtualHost>

And of course you can modify the directives to your needs, such as using a different port for your virtual host (e.g., 443), different port for Node.js, or set up the proxy under a different block, such as for a subdomain (e.g., node.example.com).

I've personally done this the other way round from @liammclennan. Some suggest that proxying through Apache defeats some of the performance and scalability advantages of Node (don't have experience myself as my server doesn't get that much traffic, but from @liammclennan's link: "Every request that comes in through Apache will cause an Apache thread to wait/block until the response is returned from your Node.js process.", which obviously doesn't mesh well with Node's architecture.)

I used node-http-proxy to set up a Node proxy server roughly as described in the first link (my Node proxy runs on port 80; Apache and my other Node services don't). Seems to be working well so far, though I have had occasional stability problems that I've 'solved' through checking the proxy's still running with a cron job (edit: it seems a lot more stable these days). The proxy's pretty lightweight, taking up about 30MB memory.