Solving indexing issues for password-protected sites

To bypass PHP timeout issues, FacetWP’s indexer makes a series of HTTP requests to itself. If your site uses HTTP Basic Authentication (.htpasswd), you’ll need to tell FacetWP how to log in.

Add the following into functions.php or into the Custom Hooks plugin:

add_filter( 'http_request_args', function( $args, $url ) {
    if ( 0 === strpos( $url, get_site_url() ) ) {
        $args['headers'] = [
            'Authorization' => 'Basic ' . base64_encode( 'YOUR_USERNAME:YOUR_PASSWORD' )
        ];
    }
    return $args;
}, 10, 2 );