I'm currently using a Google managed SSL with a bitnami WordPress. The website has mixed content issue. The media library is still using http://

Since I'm using Google mananged SSL, I can't set up a SSL(Let'sEncrypt) on the server because the domain is resolved to the load balancer's IP.

It will break the site if I change

define( 'WP_HOME', 'http://example.com' );    
define( 'WP_SITEURL', 'http://example.com' );

to

define( 'WP_HOME', 'https://example.com' );
define( 'WP_SITEURL', 'https://example.com' );

What can I do here to resolve the mixed content issue?

CodePudding user response：

The problem is that WordPress is not detecting that users connected to the load balancer using HTTPS. You have configured the load balancer to connect to your backend using http, which is recommended, but WordPress does not know that.

Add the following to wp-config.php. Then you can start using https for your WordPress configuration.

if (isset($_SERVER['HTTP_X_FORWARDED_PROTO']))
{
    if (strpos($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') !== false)
    {
           $_SERVER['HTTPS'] = 'on';
    }
}

Note: This will fix mixed content issues except those that were caused by the above configuration issue.