<?php namespace Http\Message; use Psr\Http\Message\RequestInterface; /** * Add authentication information to a PSR-7 Request. * * @author Márk Sági-Kazár <mark.sagikazar@gmail.com> */ interface Authentication { /** * Alter the request to add the authentication credentials. * * To do that, the implementation might use pre-stored credentials or do * separate HTTP requests to obtain a valid token. * * @param RequestInterface $request The request without authentication information * * @return RequestInterface The request with added authentication information */ public function authenticate(RequestInterface $request); }