WordPress is notoriously finicky with URL resolution. Using WordPress behind a reverse proxy can cause all sorts of issues. For instance, images and CSS won’t load. To fix this, add the code below to the top of the wp-config.php file in your WordPress installation:
define('.COOKIE_DOMAIN.', 'www.mydomain.com');
define('.SITECOOKIEPATH.', '.');
if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$list = explode(',',$_SERVER['HTTP_X_FORWARDED_FOR']);
$_SERVER['REMOTE_ADDR'] = $list[0];
}
define( 'WP_HOME', 'https://www.mydomain.com' );
define( 'WP_SITEURL', 'https://www.mydomain.com' );
$_SERVER['HTTP_HOST'] = 'www.mydomain.com';
$_SERVER['REMOTE_ADDR'] = 'https://www.mydomain.com';
$_SERVER[ 'SERVER_ADDR' ] = 'www.mydomain.com';
if ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')
$_SERVER['HTTPS']='on';
Make sure to replace each instance of www.mydomain.com with the domain of your WordPress website. Make sure to keep the <?PHP tag at the top of the wp-config.php file.
