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

if ($host ~* ^www.example.com$) {
    return 301 $scheme://example.com$request_uri;
}