private function defaultHandler(ServerRequestInterface $request, ResponseInterface $response)
    {
        $statusCode = $response->getStatusCode();
        $exception = self::getException($request);
        $message = $exception ? $exception->getMessage() : '';

        switch (Utils\Helpers::getMimeType($response)) {
            case 'text/plain':
            case 'text/css':
            case 'text/javascript':
                return self::errorText($statusCode, $message);

            case 'image/jpeg':
                return self::errorImage($statusCode, $message, 'imagejpeg');

            case 'image/gif':
                return self::errorImage($statusCode, $message, 'imagegif');

            case 'image/png':
                return self::errorImage($statusCode, $message, 'imagepng');

            case 'image/svg+xml':
                return self::errorSvg($statusCode, $message);

            case 'application/json':
                return self::errorJson($statusCode, $message);

            case 'text/xml':
                return self::errorXml($statusCode, $message);

            default:
                return self::errorHtml($statusCode, $message);
        }
    }
private function defaultHandler(ServerRequestInterface $request, ResponseInterface $response)
    {
        $statusCode = $response->getStatusCode();
        $exception = self::getException($request);
        $message = $exception ? $exception->getMessage() : '';

        switch (Utils\Helpers::getMimeType($response)) {
            case 'text/plain':
            case 'text/css':
            case 'text/javascript':
                return self::errorText($statusCode, $message);

            case 'image/jpeg':
                return self::errorImage($statusCode, $message, 'imagejpeg');

            case 'image/gif':
                return self::errorImage($statusCode, $message, 'imagegif');

            case 'image/png':
                return self::errorImage($statusCode, $message, 'imagepng');

            case 'image/svg+xml':
                return self::errorSvg($statusCode, $message);

            case 'application/json':
                return self::errorJson($statusCode, $message);

            case 'text/xml':
                return self::errorXml($statusCode, $message);

            default:
                return self::errorHtml($statusCode, $message);
        }
    }
private function defaultHandler ( ServerRequestInterface $ request , ResponseInterface $ response ) { $ statusCode = $ response -> getStatusCode ( ) ; $ exception = self :: getException ( $ request ) ; $ message = $ exception ? $ exception -> getMessage ( ) : '' ; switch ( Utils \ Helpers :: getMimeType ( $ response ) ) { case 'text/plain' : case 'text/css' : case 'text/javascript' : return self :: errorText ( $ statusCode , $ message ) ; case 'image/jpeg' : return self :: errorImage ( $ statusCode , $ message , 'imagejpeg' ) ; case 'image/gif' : return self :: errorImage ( $ statusCode , $ message , 'imagegif' ) ; case 'image/png' : return self :: errorImage ( $ statusCode , $ message , 'imagepng' ) ; case 'image/svg+xml' : return self :: errorSvg ( $ statusCode , $ message ) ; case 'application/json' : return self :: errorJson ( $ statusCode , $ message ) ; case 'text/xml' : return self :: errorXml ( $ statusCode , $ message ) ; default : return self :: errorHtml ( $ statusCode , $ message ) ; } }
Default handler.

@param ServerRequestInterface $request
@param ResponseInterface      $response

@return string
Default handler .