Client cURL multipart form-data POST to JasperReportsEngine Servlet

sf2_controller.php

<?php
 
namespace Plusquam\Bundle\ContractBundle\Controller;
 
use Symfony\Component\HttpFoundation\Response;
 
class BundleController extends Controller
{
    public function egzAction()
    {
    	$servletExportService = $this->get('export_servlet');
    	$body = $servletExportService->outputFromServlet('pdf', 'egz', $options);
 
        $filenameBase = "egz-bundle.pdf";
 
	$response = new Response();
	$response->headers->set('Content-Type', 'application/pdf');
	$response->headers->set('Content-Disposition', 'inline; filename="' . $filenameBase . '"');
	$response->setContent($body);
 
	return $response;
    }
}

sf2_service_guzzle3.php

<?php

use Guzzle\Http\Client;

class Servlet
{
    public function postToServlet($url = '', $postParams)
    {  
        $url = "http://localhost:8180/JasperReportsEngine/jasper";

        $httpClient = new Client();
        $request = $httpClient->post($url, array(
            'Content-Type' => 'multipart/form-data'
            ), $postParams)
    	    #->addPostFile('file', $postParams['data']) // how to add raw XML string instead of file / path?
	;
        #$response = $request->send();
        $response = $request->send()->getBody(true); // get body only

        return $response;
    }
}

sf2_service_guzzle4.php

<?php

use GuzzleHttp\Client;
use GuzzleHttp\Post\PostFile;

class Servlet
{
    public function postToServlet($url = '', $postParams)
    {  
    	$url = "http://localhost:8180/JasperReportsEngine/jasper";

    	$client = new Client();

    	$request = $client->createRequest('POST', $url);

	$postBody = $request->getBody();
	$postBody->replaceFields($postParams);
	$postBody->addFile(new PostFile('data', $postParams['data']));

	$response = $client->send($request)->getBody(true);

	return $response;
    }
}

zf2_controller.php

<?php
 
namespace Export\Controller;
 
use Zend\Mvc\Controller\AbstractActionController;
use Zend\View\Model\ViewModel;
 
class BundleController extends AbstractActionController
{
    public function egzAction()
    {
    	$servletExportService = $this->getServiceLocator()->get('ExportServletService');
    	$response = $servletExportService->outputFromServlet('pdf', 'egz', $options);
 
	if (!$response->isSuccess()) {
            // report failure
            $message = $response->getStatusCode() . ': ' . $response->getReasonPhrase();
            var_dump($response->getContent());
            $response = $this->getResponse();
            $response->setContent($message);
 
            return $response;
        }
 
        $body = $response->getBody();
 
	$filenameBase = "egz-bundle.pdf";
 
        $response = $this->getResponse();
        $response->setContent($body);
 
        $headers = new \Zend\Http\Headers();
        $headers->addHeaderLine('Pragma', 'cache');
        $headers->addHeaderLine('Cache-control', 'private');
        $headers->addHeaderLine('Content-Type', 'application/pdf');
	$headers->addHeaderLine('Content-Disposition', 'inline; filename="' . $filenameBase . '"'); // Parse directely to browswer
	$response->setHeaders($headers);
 
    	return $response;
    }
}

zf2_service.php

<?php

use Zend\Http\Client;

class Servlet
{
    public function postToServlet($url = '', $postParams)
    {    
        $url = "http://localhost:8180/JasperReportsEngine/jasper";

	$client = new Client(); // use ClientStatic? http://framework.zend.com/manual/2.0/en/modules/zend.http.client-static.html
        $client->setAdapter('Zend\Http\Client\Adapter\Curl');
        $client->setUri($url);
        // How to set charset?
        $client->setEncType(Client::ENC_FORMDATA); // Cannot handle content type '' automatically -> 'multipart/form-data'
        $client->setMethod(Request::METHOD_POST);

        $client->setParameterPOST($postParams);

        $client->setFileUpload('data', 'data', $postParams['data'], 'application/xml');

        $response = $client->send();
        return $response;
    }
}