JezK

Edit File: limit-login-protector.php

<?php

if ( ! defined( 'WPINC' ) || ! defined( 'ABSPATH' ) ) {
	die;
}

class RBLimitLoginProtector {
	public function __construct() {
		if ( defined( 'RB_BOX_NAME' ) && ( defined( 'RB_LIMIT_LOGIN_PROTECTOR_BASE_URL' ) && RB_LIMIT_LOGIN_PROTECTOR_BASE_URL ) ) {
			add_action( 'wp_login_failed', array( $this, 'register_failed_login_attempt' ) );
		}
	}

public function register_failed_login_attempt() {
		$auth_key = hash_hmac( 'sha256', AUTH_KEY, AUTH_SALT, false );
		$data     = array(
			'box_name' => RB_BOX_NAME,
			'ip'       => $_SERVER['REMOTE_ADDR'],
		);
		wp_remote_post(
			RB_LIMIT_LOGIN_PROTECTOR_BASE_URL . '/register_failed_login_attempt',
			array(
				'method'      => 'POST',
				'timeout'     => 5,
				'redirection' => 0,
				'httpversion' => '1.1',
				'user-agent'  => RB_BOX_NAME . ' ' . $_SERVER['REMOTE_ADDR'],
				'blocking'    => false,
				'headers'     => array(
					'Content-Type'   => 'application/json',
					'X-LLP-Auth-Key' => $auth_key,
				),
				'body'        => wp_json_encode( $data ),
			)
		);
	}
}

new RBLimitLoginProtector();