--- chr.module  (revision 3135)
+++ chr.module  (working copy)
@@ -199,6 +199,10 @@
     case 'PUT':
       $curl_opt[CURLOPT_PUT] = TRUE;
       break;
+    case 'HEAD':
+      $curl_opt[CURLOPT_HEADER] = TRUE;
+      $curl_opt[CURLOPT_CUSTOMREQUEST] = 'HEAD';
+      break;
     default:
       $result->error = 'invalid method ' . $options['method'];
       $result->code = -1004;