Use node server with frappe-bench

custom_node.js

// content of custom_node.js
const http = require('http')  
const port = 4200

const requestHandler = (request, response) => {  
  console.log(request.url)
  response.end('Hello Node.js Server!')
}

const server = http.createServer(requestHandler)

server.listen(port, (err) => {  
  if (err) {
    return console.log('something bad happened', err)
  }

  console.log(`server is listening on ${port}`)
})

nginx.conf

upstream frappe-bench-custom-node {
    server 0.0.0.0:4200 fail_timeout=0;
}

server {
  ...
  location /custom-node {
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header X-Frappe-Site-Name test_rn;
    proxy_set_header Origin $scheme://$http_host;
    proxy_set_header Host $host;
    proxy_pass http://frappe-bench-custom-node;
  }
  ...
}

Procfile

redis_cache: redis-server config/redis_cache.conf
redis_socketio: redis-server config/redis_socketio.conf
redis_queue: redis-server config/redis_queue.conf
web: bench serve --port 8000

socketio: /usr/bin/node apps/frappe/socketio.js
custom_app: /usr/bin/node apps/custom_app/custom_node.js
watch: bench watch
schedule: bench schedule
worker_short: bench worker --queue short
worker_long: bench worker --queue long
worker_default: bench worker --queue default

supervisor.conf

; Notes:
; priority=1 --> Lower priorities indicate programs that start first and shut down last
; killasgroup=true --> send kill signal to child processes too

[program:frappe-bench-custom-app]
command=/usr/bin/node /home/revant/frappe-bench/apps/custom_app/custom_node.js
priority=4
autostart=true
autorestart=true
stdout_logfile=/home/revant/frappe-bench/logs/custom-app.log
stderr_logfile=/home/revant/frappe-bench/logs/custom-app.error.log
user=revant
directory=/home/revant/frappe-bench

[group:frappe-bench-extras]
programs=frappe-bench-custom-app