WordPress vs WPengine Proxy Function for Plugin Updates

wpe_proxy.php

<?php
// Add to functions.php or your own plugin

define('WP_PROXY_HOST', 'your.proxy.server');
define('WP_PROXY_PORT', 'proxy_port_number');
define('WP_PROXY_USERNAME', 'your_username');
define('WP_PROXY_PASSWORD', 'your_password');

// Optional, if you need to bypass proxy for local addresses
// define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com');

add_filter('http_request_args', 'apply_proxy_for_updates', 10, 2);
function apply_proxy_for_updates($http_args, $url) {
    // Check if the URL is for an update check or download
    if (strpos($url, 'wordpress.org') !== false) {
        $http_args['proxy'] = array(
            'host' => WP_PROXY_HOST,
            'port' => WP_PROXY_PORT,
            // Add username and password if your proxy requires authentication
            'username' => WP_PROXY_USERNAME,
            'password' => WP_PROXY_PASSWORD,
        );
    }
    return $http_args;
}

?>