Prado\Util\TRpcClient::performRequest PHP Метод

    protected function performRequest($serverUrl, $payload, $mimeType)
    {
        if (($_response = @file_get_contents($serverUrl, false, $this->createStreamContext($payload, $mimeType))) === false) {
            throw new TRpcClientRequestException('Request failed ("' . $http_response_header[0] . '")');
        }
        return $_response;
    }