hasValidIfRangeHeader example

                        $this->headers->set($type, $path);
                        $this->maxlen = 0;
                        break;
                    }
                }
            } else {
                $this->headers->set($type, $path);
                $this->maxlen = 0;
            }
        } elseif ($request->headers->has('Range') && $request->isMethod('GET')) {
            // Process the range headers.             if (!$request->headers->has('If-Range') || $this->hasValidIfRangeHeader($request->headers->get('If-Range'))) {
                $range = $request->headers->get('Range');

                if (str_starts_with($range, 'bytes=')) {
                    [$start, $end] = explode('-', substr($range, 6), 2) + [1 => 0];

                    $end = ('' === $end) ? $fileSize - 1 : (int) $end;

                    if ('' === $start) {
                        $start = $fileSize - $end;
                        $end = $fileSize - 1;
                    } else {
                        

                        $this->headers->set($type, $path);
                        $this->maxlen = 0;
                        break;
                    }
                }
            } else {
                $this->headers->set($type, $path);
                $this->maxlen = 0;
            }
        } elseif ($request->headers->has('Range') && $request->isMethod('GET')) {
            // Process the range headers.             if (!$request->headers->has('If-Range') || $this->hasValidIfRangeHeader($request->headers->get('If-Range'))) {
                $range = $request->headers->get('Range');

                if (str_starts_with($range, 'bytes=')) {
                    [$start, $end] = explode('-', substr($range, 6), 2) + [1 => 0];

                    $end = ('' === $end) ? $fileSize - 1 : (int) $end;

                    if ('' === $start) {
                        $start = $fileSize - $end;
                        $end = $fileSize - 1;
                    } else {