Redirect only some pages from http to https

Question

I found many questions like this and tried almost all but failed. My most latest code is:

RewriteCond %{HTTPS} !^on$
RewriteCond %{REQUEST_URI} (/page_1|/page_2|/page_3|/page_3)$
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L]

I want to redirect http to https only for those pages (page_1 - page_4)

Initially it seems to be work but once I reached to page_1 with https and click any other (let say page_my_http_1 ) link which should not be https it also redirect to https for that page ( page_my_http_1 ).

I also tried:

RewriteCond %{HTTPS} off
RewriteCond %{REQUEST_URI} (auth|register|secure)
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [R=301]

RewriteCond %{HTTPS} on
RewriteCond %{REQUEST_URI} !(auth|register|secure)
RewriteRule ^(.*)$ http://%{SERVER_NAME}%{REQUEST_URI} [R=301]  

or is there any way to show custom message to user if SSL certificate is not activated on their browser?

Actually many non-technical user gets shocked when the see default warning message shows by the browser.

Answer 1

I changed your example only slightly, but basically it just works

RewriteEngine on

RewriteCond %{HTTPS} off
RewriteCond %{REQUEST_URI} ^/(?:auth|register|secure)$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R]

RewriteCond %{HTTPS} on
RewriteCond %{REQUEST_URI} !^/(?:auth|register|secure)$
RewriteRule .* http://%{SERVER_NAME}%{REQUEST_URI} [R]

I added the ^ , $ and / , because otherwise a request like nosecure or authority would be redireted to HTTPS as well.

Never test with 301 enabled, see this answer Tips for debugging .htaccess rewrite rules for details.