How to redirect to HTTPS?

Question

PHP

htaccess:

#order deny,allow
#deny from all
AddDefaultCharset UTF-8
ErrorDocument 404 /404
ErrorDocument 401 /password.php
RewriteEngine on

#слеш в конце
RewriteRule (.+)/$ /$1 [L,R=301]

#принудительное https
#RewriteEngine On
#RewriteBase /
#RewriteCond %{HTTPS} off
#RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

<IfModule mod_headers.c>
# this domain should only be contacted in HTTPS for the next 6 months
Header add Strict-Transport-Security "max-age=15768000; includeSubDomains; preload"
</IfModule>

<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access 1 year"
ExpiresByType image/jpeg "access 1 year"
ExpiresByType image/gif "access 1 year"
ExpiresByType image/png "access 1 year"
ExpiresByType audio/mp3 "access 1 year"
ExpiresByType audio/wav "access 1 year"
ExpiresByType text/css "access 1 month"
ExpiresByType application/pdf "access 1 month"
ExpiresByType text/x-javascript "access 1 month"
ExpiresByType application/x-shockwave-flash "access 1 month"
ExpiresByType image/x-icon "access 1 year"
ExpiresDefault "access 2 days"
</IfModule>
## EXPIRES CACHING ##

Options +FollowSymLinks
RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.*) [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

# Админка теперь по адресу /simpla
RewriteRule ^admin/?$ simpla [L]
RewriteRule ^direct/ [L]

# Каталог товаров
RewriteRule ^catalog/([^/]+)/?$ index.php?module=ProductsView&category=$1 [L,QSA]
RewriteRule ^catalog/([^/]+)/([^/]+)/?$ index.php?module=ProductsView&category=$1&brand=$2 [L,QSA]
RewriteRule ^products/([^/]+)/?$ index.php?module=ProductView&product_url=$1 [L,QSA]
RewriteRule ^products/?$ index.php?module=ProductsView [L,QSA]
RewriteRule ^brands/([^/]+)/?$ index.php?module=ProductsView&brand=$1 [L,QSA]
RewriteRule ^brands/([^/]+)/page_([^/]+)/?$ index.php?module=ProductsView&brand=$1&page=$2 [L,QSA]

# Поиск товаров
RewriteRule ^search/([^/]+)/?$ index.php?module=ProductsView&keyword=$1 [L,QSA]
RewriteRule ^search/?$ index.php?module=ProductsView [L,QSA]

# Блог
RewriteRule ^seo/post/([^/]+)/?$ index.php?module=BlogView&url=$1 [L,QSA]
RewriteRule ^seo/category/([^/]+)/?$ index.php?module=BlogView&cat=$1 [L,QSA]
RewriteRule ^seo/?$ index.php?module=BlogView [L,QSA]

# Корзина и заказы
RewriteRule ^cart/?$ index.php?module=CartView [L,QSA]
RewriteRule ^cart/([^/]+)/?$ index.php?module=CartView&add_variant=$1 [L,QSA]
RewriteRule ^cart/remove/([^/]+)/?$ index.php?module=CartView&delete_variant=$1 [L,QSA]
RewriteRule ^order/([^/]+)/?$ index.php?module=OrderView&url=$1 [L,QSA]
RewriteRule ^order/?$ index.php?module=OrderView [L,QSA]

# Для пользователей
RewriteRule ^user/login/?$ index.php?module=LoginView [L,QSA]
RewriteRule ^user/register/?$ index.php?module=RegisterView [L,QSA]
RewriteRule ^user/logout/?$ index.php?module=LoginView&action=logout [L,QSA]
RewriteRule ^user/password_remind/?$ index.php?module=LoginView&action=password_remind [L,QSA]
RewriteRule ^user/password_remind/([0-9a-z]+)/?$ index.php?module=LoginView&action=password_remind&code=$1 [L,QSA]
RewriteRule ^user/?$ index.php?module=UserView [L,QSA]

# Google sitemap
RewriteRule ^sitemap.xml?$ sitemap.php [L,QSA]

# XML
RewriteRule ^yandex.xml?$ yandex.php [L,QSA]
RewriteRule ^google.xml?$ google.php [L,QSA]

# feedback
RewriteRule ^contact/?$ index.php?module=FeedbackView [L,QSA]
#downloads
RewriteRule ^order/([^/]+)/([^/]+)/?$ index.php?module=OrderView&url=$1&file=$2 [L,QSA]

#Карта
RewriteRule ^map/?$ index.php?module=MapView [L,QSA]

#сравнение товаров
RewriteRule ^collate/?$ index.php?module=CollateView [L,QSA]

# Статические страницы
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^/]*)/?$ index.php?module=PageView&page_url=$1 [L,QSA]
RewriteRule ^/?$ index.php?module=MainView&page_url= [L,QSA]

# Ресайз картинок на лету
RewriteRule ^files/products/(.+) resize/resize.php?file=$1&token=%{QUERY_STRING}
#RewriteCond %{THE_REQUEST} ^GET\ (.*)files/products/(.*)\?([A-z0-9]*)
#RewriteRule ^files/products/(.+) resize/resize.php?file=%2&token=%3 [L,NE]

This is a settings file. If you uncomment:

#RewriteEngine On
#RewriteBase /
#RewriteCond %{HTTPS} off
#RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI }

then a cyclic redirect occurs and the site goes down. How to make a redirect to https normally?

Answer 1

RewriteCond %{HTTP:X-Forwarded-Proto} !^https$ [NC]
RewriteCond %{HTTP_HOST} ^www.domain.com$ [NC]
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

once wrote