React\HttpClient\Response::getVersion PHP Method

    public function getVersion()
    {
        return $this->version;
    }

 /**
  *
  */
 protected function handleResponse($request)
 {
     $this->progress->onResponse($this->httpResponse);
     $this->createStream($request);
     $response = new Response($this->httpResponse->getCode(), $this->httpResponse->getHeaders(), $this->stream, $this->httpResponse->getVersion(), $this->httpResponse->getReasonPhrase());
     if (!$this->options['stream']) {
         return $request->on('end', function () use($response) {
             $this->resolveResponse($response);
         });
     }
     $this->resolveResponse($response);
 }