Correct way in new versions of nginx

Turn out my first answer to this question was correct at certain time, but it turned into another pitfall - to stay up to date please check Taxing rewrite pitfalls

I have been corrected by many SE users, so the credit goes to them, but more importantly, here is the correct code:

server {
       listen         80;
       server_name    my.domain.com;
       return         301 https://$server_name$request_uri;
}

server {
       listen         443 ssl;
       server_name    my.domain.com;
       # add Strict-Transport-Security to prevent man in the middle attacks
       add_header Strict-Transport-Security "max-age=31536000" always; 

       [....]
}

I got it working. Sameer was close but I'm not sure he understood my exact question. This is the solution to my problem;

server {
    listen 80;
    server_name www.mydomain.com 123.123.123.123 456.456.456.456;
}

server {
    listen 80 default_server;
    server_name _;
    rewrite ^ http://www.mydomain.com$request_uri?;
}

With the above, you can load the site via www.mydomain.com, or the direct internal and public IP addresses, but if you try to load it any other way you get redirected.

Oddly enough... This is the first example I tried above. I don't know why it didn't work then and it working now. Perhaps because the "listen 80 default" has been deprecated in favor of "listen 80 default_server". Or perhaps I confused things will testing across all 4 nodes. Either way, it seems to be working right now with this definition!