Replace download with symfony http-client

See: https://symfony.com/doc/current/http_client.html#https-certificate

Author: tvdijen

src/Controller/Aggregator.php

@@ -37,6 +37,7 @@ class Aggregator
         'application/xml',
     ];
 
+
     /**
      * Controller constructor.
      *

src/EntitySource.php

@@ -134,23 +134,18 @@ private function downloadMetadata(): EntitiesDescriptor|EntityDescriptor|null
         Logger::debug($this->logLoc . 'Downloading metadata from ' . var_export($this->url, true));
         $configUtils = new Utils\Config();
 
-        $context = ['ssl' => []];
-        if ($this->sslCAFile !== null) {
-            $context['ssl']['cafile'] = $configUtils->getCertPath($this->sslCAFile);
-            Logger::debug(
-                $this->logLoc . 'Validating https connection against CA certificate(s) found in ' .
-                var_export($context['ssl']['cafile'], true),
-            );
-            $context['ssl']['verify_peer'] = true;
-            $context['ssl']['CN_match'] = parse_url($this->url, PHP_URL_HOST);
-        }
+        $httpUtils = new Utils\HTTP();
+        $client = $httpUtils->createHttpClient();
+        $response = $client->request('GET', $this->url);
 
         try {
-            $httpUtils = new Utils\HTTP();
-            $data = $httpUtils->fetch($this->url, $context, false);
-        } catch (Error\Exception $e) {
-            Logger::error($this->logLoc . 'Unable to load metadata from ' . var_export($this->url, true));
+            // Trigger any issues that may occur during transport
+            $statusCode = $response->getStatusCode();
+        } catch (TransportException $e) {
+            Logger::error('Unable to load metadata from ' . var_export($this->url, true));
             return null;
+        } finally {
+            $data = $response->getContent();
         }
 
         $doc = DOMDocumentFactory::create();