PayWithAmazon\Client::invokePost PHP Method

    private function invokePost($parameters)
    {
        $response = array();
        $statusCode = 200;
        $this->success = false;
        // Submit the request and read response body
        try {
            $shouldRetry = true;
            $retries = 0;
            do {
                try {
                    $this->constructUserAgentHeader();
                    $httpCurlRequest = new HttpCurl($this->config);
                    $response = $httpCurlRequest->httpPost($this->mwsServiceUrl, $this->userAgent, $parameters);
                    $curlResponseInfo = $httpCurlRequest->getCurlResponseInfo();
                    $statusCode = $curlResponseInfo["http_code"];
                    $this->logMessage($this->userAgent);
                    $response = array('Status' => $statusCode, 'ResponseBody' => $response);
                    $statusCode = $response['Status'];
                    if ($statusCode == 200) {
                        $shouldRetry = false;
                        $this->success = true;
                    } elseif ($statusCode == 500 || $statusCode == 503) {
                        $shouldRetry = true;
                        if ($shouldRetry && strtolower($this->config['handle_throttle'])) {
                            $this->pauseOnRetry(++$retries, $statusCode);
                        }
                    } else {
                        $shouldRetry = false;
                    }
                } catch (\Exception $e) {
                    throw $e;
                }
            } while ($shouldRetry);
        } catch (\Exception $se) {
            throw $se;
        }
        $this->logMessage($this->sanitizeResponseData($response['ResponseBody']));
        return $response;
    }