How to redirect domain to www url with Nginx

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This post presents the snippet from the Nginx configuration that redirects all request to https://www.bookmarks.dev:

# redirect HTTP to www
server {
    listen 80 default_server;
    listen [::]:80 default_server;
    server_name codingmarks.org www.codingmarks.org;

    return 301 https://www.codingmarks.org$request_uri;
}

# redirect HTTPS to wwww
server {
    listen 443;
    server_name codingmarks.org;

    return 301 https://www.codingmarks.org$request_uri;
}

Note the missing www.codingmarks.org in the second server/server_name entry, to avoid an infinite loop

Lots of other good Nginx resources can be found if you search for the nginx tag on codingmarks: https://www.bookmarks.dev?q=[nginx]

Source code for bookmarks.dev is available on Github - frontend and backend.