reverse proxy using ngix and ssl implementation on express failed - node.js

Question

I try to implement ssl in my node.js app but failed. Here is my app.js
https://gist.github.com/eldyvoon/7a1df560fd9d13da74d090e28f7ee801
In development (localhost) I got 'your connection is not private' error. I thought it was Chrome's problem.
So I try to deploy it to my ubuntu server, I use nginx proxy for my node.js app, my config as below
server {
listen 80;
server_name mysite.com;
location / {
proxy_pass http://localhost:3001;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
}
}
But mysite.com refused to connect. No error in my node's console. I stuck for few days for this, need help. Please note that my site is running fine previously before trying to implement ssl.

Answer 1

You need to listen on port 443 and configure nginx to use some certificates.
Something like:
server {
listen 443;
server_name example.com;
add_header Strict-Transport-Security "max-age=3600";
ssl on;
ssl_certificate /.../chained2.pem;
ssl_certificate_key /.../domain.key;
ssl_session_timeout 5m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA;
ssl_session_cache shared:SSL:50m;
ssl_prefer_server_ciphers on;
location / {
proxy_pass http://localhost:3001;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
}
}
Add correct paths to your .pem and .key files. You can get the certificate for free from Let's Encrypt.