Nginx control domain name 301 jump appears & quot; This page contains a redirect loop & quot;

"This webpage contains a redirect loop" appears when the Nginx control domain name is redirected to 301"

I need to permanently redirect the website domain name 301. When a user accesses tqcto.com, 301 to www.tqcto.com, according to a lot of configuration materials, there is a "This page contains a redirection loop" problem, after many attempts, we found that the following configuration can solve the problem.

Server_name www.tqcto.com tqcto.com; if ($ host! = 'Www .tqcto.com ') {rewrite ^/(. *) $ http://www.tqcto.com/#1 permanent ;}