HTTP verb rules in router are NOT case-insensitive

[jagandecapri]

The docs http://www.codeigniter.com/user_guide/general/routing.html?highlight=rest#using-http-verbs-in-routes says that HTTP verb rules are case-insensitive and proceeds to give these examples.

$route['products/(:num)']['DELETE'] = 'product/delete/$1';
$route['products']['put'] = 'product/insert'

But, when I try to use capitalized HTTP verb such as POST etc, 404 error is shown.
Looking through function _parse_routes() in system/core/Router.php.

$http_verb = isset($_SERVER['REQUEST_METHOD']) ? strtolower($_SERVER['REQUEST_METHOD']) : 'cli';
....
elseif (is_array($this->routes[$uri]) && isset($this->routes[$uri][$http_verb]))

HTTP verbs from the $_SERVER is changed into lowercase before the $this->routes array is checked.
Hence, only lower case HTTP verbs seems to be working, contradicting with the docs.

[jagandecapri]

Thanks @narfbg for the quick fix. 👍