NGinx Example Setup

.env

PORT=4100

admin.js

var socket = io(window.location.origin);

/* View Buttons */
$('#waiting').click(function() {
    socket.emit('changePage', 'waiting');
});

client.js

/* This is attached to a PUG Template */
window.socket = io(window.location.origin + '/stream');

window.socket.on('changePage', function(page) {
    location.href = window.location.origin + '/stream/' + page;
});

domain.com.conf

upstream stream {
  server 127.0.0.1:4100;
}

server {
  server_name     sub.domain.com;

  listen 443 ssl; # managed by Certbot
  ssl_certificate /etc/letsencrypt/live/sub.domain.com/fullchain.pem; # managed by Certbot
  ssl_certificate_key /etc/letsencrypt/live/sub.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

  location / {
    proxy_pass              http://stream;
    proxy_next_upstream     error timeout invalid_header http_500 http_502 http_503 http_504;
    proxy_redirect          off;
    proxy_buffering         off;

    proxy_set_header        Host                    $host;
    proxy_set_header        X-Real-IP               $remote_addr;
    proxy_set_header        X-Forwarded-For         $proxy_add_x_forwarded_for;
    proxy_set_header        X-Forwarded-Proto       $scheme;
    add_header              Front-End-Https         on;
  }

  location /socket.io/ {
    proxy_pass              http://stream;
    proxy_redirect          off;

    proxy_http_version      1.1;

    proxy_set_header        Upgrade                 $http_upgrade;
    proxy_set_header        Connection              "upgrade";
    proxy_set_header        Host                    $host;
    proxy_set_header        X-Real-IP               $remote_addr;
    proxy_set_header        X-Forwarded-For         $proxy_add_x_forwarded_for;
  }
}

server {
  if ($host = sub.domain.com) {
    return 301 https://$host$request_uri;
  } # managed by Certbot

  listen          80;
  server_name     sub.domain.com;
  rewrite         ^(.*) https://$host$1 permanent;
}

nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
  worker_connections 768;
  # multi_accept on;
}

http {

  ##
  # Basic Settings
  ##

  sendfile on;
  tcp_nopush on;
  tcp_nodelay on;
  keepalive_timeout 65;
  types_hash_max_size 2048;
  # server_tokens off;

  # server_names_hash_bucket_size 64;
  # server_name_in_redirect off;

  include /etc/nginx/mime.types;
  default_type application/octet-stream;

  ##
  # SSL Settings
  ##

  ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
  ssl_prefer_server_ciphers on;

  ##
  # Logging Settings
  ##

  access_log /var/log/nginx/access.log;
  error_log /var/log/nginx/error.log;

  ##
  # Gzip Settings
  ##

  gzip on;

  # gzip_vary on;
  # gzip_proxied any;
  # gzip_comp_level 6;
  # gzip_buffers 16 8k;
  # gzip_http_version 1.1;
  # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

  ##
  # Virtual Host Configs
  ##

  include /etc/nginx/conf.d/*.conf;
  include /etc/nginx/sites-enabled/*;
}

server.js

require('dotenv').config()

const http = require('http')
const https = require('https')
const express = require('express')
const app = express()
const httpServer = http.createServer(app)

const io = require('socket.io').listen(httpServer, { log: true })
const streamio = io.of('/stream')

app.use(express.static(__dirname + '/../public'))
app.set('view engine', 'pug')
app.set('views', __dirname + '/../public/views')

/* Routes */
app.get('/', function(req, res) {
    res.render('index')
})

io.on('connection', (socket) => {
    socket.emit('initData', { data: 'data' })
})

socket.on('changePage', (page) => {
  currentPage = page
  streamio.emit('changePage', page)
})

streamio.on('connection', (socket) => {
    socket.emit('initData', { data: 'data' })
})

httpServer.listen(process.env.PORT)
console.log('Server started on port', process.env.PORT)