518     $response = call_user_func_array($discover_function, [$uri, $fetcher]);
523         return [$uri, []];
532             return Auth_OpenID_discoverWithoutYadis($uri,
549 function Auth_OpenID_discoverURI($uri, $fetcher)  argument
551     $uri = Auth_OpenID::normalizeUrl($uri);
552     return Auth_OpenID_discoverWithYadis($uri, $fetcher);
556  * @param string $uri
560 function Auth_OpenID_discoverWithoutYadis($uri, $fetcher)  argument
562     $http_resp = @$fetcher->get($uri);
565         return [$uri, []];
603  * @param string $uri
607 function Auth_OpenID_discover($uri, $fetcher)  argument
611     if ($fetcher->isHTTPS($uri) && !$fetcher->supportsSSL()) {
612         return [$uri, []];
615     if (Auth_Yadis_identifierScheme($uri) == 'XRI') {
616         $result = Auth_OpenID_discoverXRI($uri, $fetcher);
618         $result = Auth_OpenID_discoverURI($uri, $fetcher);