Sails.js Socket configuration for Nginx 1.x

socket.conf

upstream sails {

        ip_hash;

        keepalive 64;

        server 127.0.0.1:1400 max_fails=3 fail_timeout=10s;
        server 127.0.0.1:1400 max_fails=3 fail_timeout=10s;

}

server {

        root /var/www/erp;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html;

        server_name erp.domain.com;

        # Sails App
        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                #try_files $uri $uri/ =404;
                proxy_pass http://sails/;
        }

        # Socket.io
        location /socket.io/ {
                proxy_http_version 1.1;
                proxy_pass http://sails/socket.io/;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection "Upgrade";
                proxy_set_header        X-Forwarded-For   $remote_addr;
                proxy_set_header        X-Real-IP         $remote_addr;
                proxy_set_header        Host              $host;
                proxy_set_header Access-Control-Allow-Origin *;
                proxy_read_timeout 900;
        }

    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/erp.domain.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/erp.domain.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}

server {

    if ($host = erp.domain.com) {

        return 301 https://$host$request_uri;

    } # managed by Certbot

    listen 80;

    server_name erp.domain.com;
    return 404; # managed by Certbot
}