Added setCAInfoLocation

\Paynl\Config::setCAInfoLocation('path/to/cacert.pem')

samples/config.php

@@ -1,3 +1,5 @@
 <?php
 \Paynl\Config::setApiToken('e41f83b246b706291ea9ad798ccfd9f0fee5e0ab');
 \Paynl\Config::setServiceId('SL-3490-4320');
+
+//\Paynl\Config::setCAInfoLocation('path/to/cacert.pem'); //optional: you can download it on https://curl.haxx.se/ca/cacert.pem

src/Api/Api.php

@@ -95,8 +95,17 @@ public function doRequest($endpoint, $version = null)
 
         $curl = new Curl();
 
+        if(Config::getCAInfoLocation()){
+            // set a custom CAInfo file
+            $curl->setOpt(CURLOPT_CAINFO, Config::getCAInfoLocation());
+        }
+
         $result = $curl->post($uri, $data);
 
+        if($curl->error){
+            throw new Error\Error($curl->errorMessage);
+        }
+
         $output = static::processResult($result);
 
         return $output;

src/Config.php

@@ -36,6 +36,27 @@ class Config
     // @var int The version of the Pay.nl API to use for requests.
     private static $apiVersion = 5;
 
+    /**
+     * @var string path tho CAInfo location
+     */
+    private static $CAInfoLocation = null;
+
+    /**
+     * @return string
+     */
+    public static function getCAInfoLocation()
+    {
+        return self::$CAInfoLocation;
+    }
+
+    /**
+     * @param string $CAInfoLocation
+     */
+    public static function setCAInfoLocation($CAInfoLocation)
+    {
+        self::$CAInfoLocation = $CAInfoLocation;
+    }
+
     /**
      * @return string The API token used for requests.
      */