Index: soapclient.module
===================================================================
--- soapclient.module	(revision 2334)
+++ soapclient.module	(working copy)
@@ -592,6 +596,11 @@
       $result['#error'] = t($e->getMessage());
       return $result;
     }
+    if ( isset($options['headers']) )
+    {
+      $sv =  new SoapVar($options['headers'], XSD_ANYXML);
+      $client->__setSoapHeaders(array(new SoapHeader('example.com', 'dontcareaboutname', $sv)));
+    }
   }
   else // not supported library
   {
Index: lib/drupal_soap_client.inc
===================================================================
--- lib/drupal_soap_client.inc	(revision 2334)
+++ lib/drupal_soap_client.inc	(working copy)
@@ -70,6 +70,8 @@
                                                $this->options['style'],
                                                $this->options['use']);
 
+      $result['#headers'] = $this->client->responseHeader;
+      
       if ( $this->client->fault )
       {
         $result['#error'] = t('Fault !code: !msg', array( '!code' => $result['return']['faultcode'], '!msg' => $result['return']['faultstring'] ));
@@ -88,7 +90,16 @@
     {
       try
       {
-        $result['#return'] = $this->client->__soapCall($function, $params);
+        $response_headers = array();
+        // XXX Why does $params need to be wrapped in an additional array?  Bug in PHP?
+        $result['#return'] = $this->client->__soapCall(
+          $function,
+          array($params),
+          array(),
+          array(),
+          $response_headers
+        );
+        $result['#headers'] = soapclient_object_to_array($response_headers['Header']);
       }
       catch(Exception $e)
       {