Simple nginx error but I am blind it feels like - nginx

Question

This is my config as of now, trying to set this site up with ssl certificate.
server {
listen [::]:443 ssl domain.io, *.domain.io;
ssl on;
ssl_certificate /etc/ssl/certs/domain.io.pem;
ssl_certificate_key /etc/ssl/certs/domain.io.key;
root /var/www/html/domain.io/;
# Add index.php to the list if you are using PHP
index index.html;
server_name domain.io;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
When I restart nginx it complains about this:
nginx: [emerg] invalid parameter "domain.io," in /etc/nginx/sites-enabled/domain.io:3
What am I missing? I am for the moment config-blind. :)
Sp be kind I toting out my dead simple error.
Trying to see what simple error I have made and failed.

Answer 1

I don't really see listen directive accepting a domain name.
https://docs.nginx.com/nginx/admin-guide/web-server/web-server/
I would try this:
server {
listen [::]:443 ssl;
ssl on;
ssl_certificate /etc/ssl/certs/domain.io.pem;
ssl_certificate_key /etc/ssl/certs/domain.io.key;
root /var/www/html/domain.io/;
# Add index.php to the list if you are using PHP
index index.html;
server_name domain.io *.domain.io;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}