nginx showing IP address instead of domain - nginx

Question

I have a godaddy A record pointing to my Digital Ocean IP address.
Here's the nginx configuration.
server {
listen 80 default_server;
server_name domain.com www.domain.com;
location / {
proxy_pass 'http://127.0.0.1:3004';
}
}
When I type in the domain.com it goes to the server, but the address bar shows the IP address.
How can it show the domain name?

Answer 1

It's most probably a redirection from proxy_pass. I'm not sure what you are running at backend but you could try to pass hostname.
proxy_set_header Host $host;
Add this line after proxy_pass to tell backend which domain is in the request headers.

Answer 2

The redirection to the IP address is most likely done by your backend in the proxy_pass.
You could try to add some header to help the backend understand the context of the request.
I would recommend as a starter the following configuration :
server {
listen 80 default_server;
server_name domain.com www.domain.com;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
location / {
proxy_pass 'http://127.0.0.1:3004';
}
}
If using Node.JS, you might need the following line as well :
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
Please also check the configuration of your backend. You may need to setup the access URL, context path, etc.