Reverse proxy https

Configure SSL for the GitLab Linux package | GitLab

gitlab.rb file The configuration is as follows:

external_url ‘https://gitlab.wanfeng-inc.com
nginx[‘redirect_http_to_https’] = false
nginx[‘redirect_http_to_https_port’] = 80
nginx[‘listen_port’] = 80
nginx[‘listen_https’] = false

host IP:192.168.100.1

when request http://192.168.100.1, redirected:https://192.168.100.1

request:https://gitlab.wanfeng-inc.com normal

why ???