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RewriteEngine On

RewriteCond %{HTTPS} off

RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI}

http://www.sslshopper.com/apache-redirect-http-to-https.html

or

http://www.cyberciti.biz/tips/howto-apache-force-https-secure-connections.html

Searched for apache redirect http to https and landed here. This is what i did on ubuntu:

1) Enable modules

sudo a2enmod rewrite

sudo a2enmod ssl

2) Edit your site config

Edit file

/etc/apache2/sites-available/000-default.conf

Content should be:

<VirtualHost *:80>

    RewriteEngine On

    RewriteCond %{HTTPS} off

    RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

</VirtualHost>



<VirtualHost *:443>

    SSLEngine on

    SSLCertificateFile    <path to your crt file>

    SSLCertificateKeyFile   <path to your private key file>



    # Rest of your site config

    # ...

</VirtualHost>

• Note that the SSL module requires certificate. you will need to specify existing one (if you bought one) or to generate a self-signed certificate by yourself.

3) Restart apache2

sudo service apache2 restart

Actually, your topic is belongs on https://serverfault.com/ but you can still try to check these .htaccess directives:

RewriteEngine on

RewriteCond %{HTTPS} off

RewriteRule ^(.*) https://%{HTTP_HOST}/$1

Using mod_rewrite is not the recommended way instead use virtual host and redirect.

In case, if you are inclined to do using mod_rewrite:

RewriteEngine On

# This will enable the Rewrite capabilities



RewriteCond %{HTTPS} !=on

# This checks to make sure the connection is not already HTTPS



RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L]

# This rule will redirect users from their original location, to the same 

location but using HTTPS.

# i.e.  http://www.example.com/foo/ to https://www.example.com/foo/

# The leading slash is made optional so that this will work either in

# httpd.conf or .htaccess context

Reference: Httpd Wiki - RewriteHTTPToHTTPS

If you are looking for a 301 Permanent Redirect, then redirect flag should be as,

 R=301

so the RewriteRule will be like,

RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R=301,L]

If you have Apache2.4 check 000-default.conf - remove DocumentRoot and add

Redirect permanent / https://[your-domain]/

This worked for me:

RewriteCond %{HTTPS} =off

RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [QSA,L,R=301]

Server version: Apache/2.4.29 (Ubuntu)

After long search on the web and in the official documentation of apache, the only solution that worked for me came from /usr/share/doc/apache2/README.Debian.gz

To enable SSL, type (as user root):



    a2ensite default-ssl

    a2enmod ssl

In the file /etc/apache2/sites-available/000-default.conf add the

Redirect "/" "https://sub.domain.com/"

<VirtualHost *:80>



    #ServerName www.example.com

    DocumentRoot /var/www/owncloud

    Redirect "/" "https://sub.domain.com/"

That's it.

P.S: If you want to read the manual without extracting:

gunzip -cd /usr/share/doc/apache2/README.Debian.gz

This code work for me.

# ----------port 80----------

RewriteEngine on

# redirect http non-www to https www

RewriteCond %{HTTPS} off

RewriteCond %{SERVER_NAME} =example.com

RewriteRule ^ https://www.%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]



# redirect http www to https www

RewriteCond %{HTTPS} off

RewriteCond %{SERVER_NAME} =www.example.com

RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]

# ----------port 443----------

RewriteEngine on

# redirect https non-www to https www

RewriteCond %{SERVER_NAME} !^www.(.*)$ [NC]

RewriteRule ^ https://www.%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]

Please try this one in apache Virtualhosting configuration
and then reload apache service

RewriteEngine On



RewriteCond %{HTTPS} off





RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI}