[Question] PM2 start and wait for http connection ready

Hi,

I'm trying to use pm2 to start a react-app devServer with an npm script.
I would like PM2 to wait until the dev server is started.

I've tried to options of 'wait_ready' and 'listen_timeout', but PM2 keeps waiting for the complete timeout setting before continuing.

I'm not starting a webserver myself, react-app is responsible for that, so I cannot send 'ready' through process.send.

You documentation mentions "Graceful start using http.Server.listen", but how does this work, there are no examples. PM2 will not set the app as online when the application can be reached on port 3000.

Per my situation;

• using pm2 to run npm start
• I've set a listen_timeout of 60000 ms
• the application is reachable after about 30 sec. (browser will load page)
• PM2 keeps waiting the full 60 secs. before setting the app as "online"

Start with the documentation section titled "Graceful start using http.Server.listen" and review how wait_ready and listen_timeout are described. Reproduce the reported setup with PM2 running npm start and the application on port 3000, then document an example or clarify the expected readiness behavior.