Added method to tweak HTTP headers of request

src/BeSimple/SoapClient/SoapClient.php

@@ -173,6 +173,8 @@ class SoapClient extends \SoapClient
             $headers = array();
         }
 
+        $this->filterRequestHeaders($soapRequest, $headers);
+
         // execute HTTP request with cURL
         $responseSuccessfull = $this->curl->exec(
             $location,
@@ -253,6 +255,16 @@ class SoapClient extends \SoapClient
         return $soapResponse;
     }
 
+    /**
+     * Filters HTTP headers which will be sent
+     *
+     * @param SoapRequest $soapRequest SOAP request object
+     * @param array       $headers     An array of HTTP headers
+     */
+    protected function filterRequestHeaders(SoapRequest $soapRequest, array &$headers)
+    {
+    }
+
     /**
      * Get last request HTTP headers.
      *