Laravoole\Wrapper\SwooleHttpWrapper::ucHeaders PHP Method

    protected function ucHeaders($request)
    {
        // merge headers into server which ar filted by swoole
        // make a new array when php 7 has different behavior on foreach
        $new_header = [];
        $uc_header = [];
        foreach ($request->header as $key => $value) {
            $new_header['http_' . $key] = $value;
            $uc_header[ucwords($key, '-')] = $value;
        }
        $server = array_merge($request->server, $new_header);
        // swoole has changed all keys to lower case
        $server = array_change_key_case($server, CASE_UPPER);
        $request->server = $server;
        $request->header = $uc_header;
        return $request;
    }