I have created .htaccess file with the following line to redirect any request to http://www.oldurl.com/ to https://www.newurl.com/.

redirect 301 / https://www.newurl.com/

The line stated above tells Apache server to redirect all request to http://www.oldurl.com/ will be redirected to https://www.newurl.com/using 301 permanent redirection. It worked fine.

After implementing the solution I faced another problem. The line of code was redirecting to only HTTPS irrespective of the request made to HTTP or HTTPS. This caused a problem for the pages which were non-secured, I mean shown via HTTP. These pages contain elements like CSS, JavaScript files, images etc. which are linked as HTTP. So, browsers started generating security warnings. Again I took help of Google and searched for a solution. After studying different problems I wrote the following lines of code in the .htaccess file and it worked.

RewriteEngine On
RewriteCond %{HTTPS} on
RewriteRule ^(.*)$ https://www.newurl.com/$1 [L,R=301]
RewriteCond %{HTTPS} !^443
RewriteRule ^(.*)$ http://www.newurl.com/$1 [L,R=301]

The above code does a conditional redirection. If the request is made to HTTP then it redirects to HTTP and the same is for HTTPS.

FYI, my project is built with CodeIgniter and the redirection worked fine with it.

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