NGINX Config for nodejs application with nginx serving assets and socket.io support

nginx.conf

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/
#   * https://gist.github.com/vodolaz095/8373960

user  nginx;
worker_processes  4;

error_log  /var/log/nginx/error.log;
#error_log  /var/log/nginx/error.log  notice;
#error_log  /var/log/nginx/error.log  info;

pid        /run/nginx.pid;

events {
    worker_connections  1024;
}


http {
    include mime.types;
    default_type application/octet-stream;
    sendfile on;
    gzip on;

map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

server {
        listen       80;
        server_name  default;
        index  index.html;
#serve frontend from private directory
        root   /home/nap/static;
        location / {

#if its an actual file, set up cache policies.
          if ( -f $request_filename) {
            expires    max;
            add_header Cache-Control public;
          }

#default handler, first try to serv the requested file, if file doesn't exists, it request is proxied to nodejs.
        try_files  $uri  @nodejs;
        }

        location /socket.io/ {
          proxy_pass http://example.org;
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection $http_upgrade;
        }

#this is the nodejs proxy.
      location @nodejs {
        proxy_pass        http://example.org;
        proxy_set_header  X-Real-IP  $remote_addr;
      }
    }
}