Plugin WordPress para forçar o acesso via https

lb-force-https.php

<?php
/*
Plugin Name: LB Force HTTPS
Plugin URI:
Description: Redirect all visits to https
Author: leobaiano
Author URI:
Version: 0.0.1
*/

/**
* Redirect to https if http
*/
function redirect_for_https() {
	if ( !is_ssl() ) {
		wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], 301 );
		exit();
	}
}
add_action ( 'template_redirect', 'redirect_for_https', 1 );