apache proxy setup

sudo a2enmod proxy
sudo a2enmod proxy_http
sudo a2enmod proxy_balancer
sudo a2enmod lbmethod_byrequests
sudo a2enmod proxy_wstunnel
sudo service apache2 restart
sudo nano /etc/apache2/sites-available/000-default.conf

<VirtualHost *:80>
        ServerName devsocket.saviapp.com

        ProxyRequests Off
        ProxyPreserveHost On
        ProxyVia Full
        <Proxy *>
            Require all granted
        </Proxy>

        <Location />
                RewriteEngine On
                RewriteCond %{HTTP:UPGRADE} ^WebSocket$ [NC]
                RewriteCond %{HTTP:CONNECTION} Upgrade$ [NC]
                RewriteRule .* ws://127.0.0.1:3000%{REQUEST_URI} [P]

                ProxyPass http://127.0.0.1:3000/
                ProxyPassReverse http://127.0.0.1:3000/
        </Location>


        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/html/dev-socket
        <Directory "/var/www/html">
                 Options Indexes FollowSymLinks MultiViews
                AllowOverride All
                Order allow,deny
                allow from all
        </Directory>

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

cd /var/www/html/dev-socket
sudo npm install pm2 -g
pm2 start npm -- start

razzul/proxy.md