Nginx no-www to www and www to no-www

Question

I am using nginx on Rackspace cloud following a tutorial and having searched the net and so far can\'t get this sorted.

I want www.mysite.com to go to mysite.com as

Answer 1

Unique format:

server {
  listen 80;
  server_name "~^www\.(.*)$" ;
  return 301 https://$1$request_uri ;
}